# Dango SDK

> Reference and concept docs for the TypeScript, Python, and Rust Dango SDKs.

## Docs

- [TypeScript SDK](/typescript): The TypeScript SDK is a viem-style client for the Dango execution environment. It speaks GraphQL over HTTP and WebSocket to a Dango indexer, signs transactions with EIP-712 typed data, and ships as six packages: `@left-curve/sdk`, `@left-curve/crypto`, `@left-curve/encoding`, `@left-curve/types`, `@left-curve/utils`, and `@left-curve/config`.
- [Account](/typescript/types/Account): A single on-chain account belonging to a user.
- [AccountDetails](/typescript/types/AccountDetails): `Account` plus the owner's username. Returned by [`getAccountInfo`](../actions/account-factory/getAccountInfo) after resolving the user.
- [AccountInfo](/typescript/types/AccountInfo): Account record stored by the account factory (no address attached).
- [Address](/typescript/types/Address): A 0x-prefixed hex string identifying an account or contract on Dango.
- [AppConfig](/typescript/types/AppConfig): The Dango app-level configuration: system contract addresses, fee rates, liquidation parameters, and minimum deposits.
- [Base64](/typescript/types/Base64): A base64-encoded string.
- [BlockInfo](/typescript/types/BlockInfo): A block header. Used by `queryStatus` to return the latest block.
- [Candle](/typescript/types/Candle): An OHLC candle for a spot pair at a given interval.
- [Chain](/typescript/types/Chain): The chain configuration consumed by `createTransport` and the client factories.
- [ChainConfig](/typescript/types/ChainConfig): The chain-level configuration: owner, system contracts, permissions, cronjobs.
- [Coin](/typescript/types/Coin): A `{ denom, amount }` pair representing some quantity of one token.
- [Coins](/typescript/types/Coins): A record mapping denoms to base-unit amount strings. The canonical multi-coin payload across the SDK.
- [ContractInfo](/typescript/types/ContractInfo): Contract metadata returned by [`getContractInfo`](../actions/app/getContractInfo).
- [Credential](/typescript/types/Credential): The authentication bundle attached to a transaction. Either a standard credential from the primary key or a session credential.
- [Denom](/typescript/types/Denom): A token denomination — a chain-unique string identifier.
- [Funds](/typescript/types/Funds): Coins attached to a contract call (e.g. inside an `execute` or `transferRemote` message).
- [Hex](/typescript/types/Hex): A hex-encoded string.
- [IndexedBlock](/typescript/types/IndexedBlock): A block as returned by the indexer — header plus transactions and cron outcomes.
- [Key](/typescript/types/Key): A public key that can be associated with a Dango account. Discriminated by key family.
- [KeyHash](/typescript/types/KeyHash): Uppercase hex SHA-256 of a public key or credential id. Used to identify keys on chain.
- [Message](/typescript/types/Message): A discriminated union of the seven transaction-level messages Dango accepts.
- [OrderId](/typescript/types/OrderId): A spot order id.
- [PairId](/typescript/types/PairId): The identifier of a spot trading pair — base and quote denom.
- [PairParams](/typescript/types/PairParams): Parameters of a single spot trading pair.
- [PairStats](/typescript/types/PairStats): 24h indexer-computed stats for a spot pair.
- [PairUpdate](/typescript/types/PairUpdate): A pair listing returned by `getPairs` — id plus parameters.
- [PerpsCandle](/typescript/types/PerpsCandle): An OHLC candle for a perps pair.
- [PerpsEvent](/typescript/types/PerpsEvent): A perps event — fill, liquidation, or deleverage. The `data` field is a discriminated payload.
- [PerpsOrderKind](/typescript/types/PerpsOrderKind): A perps order's kind — market or limit.
- [PerpsPairParam](/typescript/types/PerpsPairParam): Parameters of a single perps pair.
- [PerpsPairStats](/typescript/types/PerpsPairStats): 24h indexer-computed stats for a perps pair.
- [PerpsParam](/typescript/types/PerpsParam): Global perps parameters.
- [PerpsTrade](/typescript/types/PerpsTrade): A perps trade fill.
- [PerpsUserState](/typescript/types/PerpsUserState): A user's perps state — margin, positions, vault shares.
- [PerpsUserStateExtended](/typescript/types/PerpsUserStateExtended): Extended perps user state with optional PnL, equity, margin, and liquidation fields.
- [Price](/typescript/types/Price): An oracle price entry — current price, EMA, precision, and timestamp.
- [PublicKey](/typescript/types/PublicKey): A public key as returned by the indexer — includes metadata like creation time and key type.
- [Signature](/typescript/types/Signature): A discriminated signature carried by a credential. One of three families: secp256k1, WebAuthn passkey, or EIP-712.
- [Signer](/typescript/types/Signer): The interface all signing implementations satisfy. `signTx` signs a tx; `signArbitrary` signs an off-chain payload.
- [SigningSession](/typescript/types/SigningSession): A session-key bundle. Pair the ephemeral session key with the primary-key authorization that legitimizes it.
- [Trade](/typescript/types/Trade): A spot trade fill.
- [Tx](/typescript/types/Tx): A signed transaction. Holds messages, sender, gas, credential, and metadata.
- [User](/typescript/types/User): A user record — index, name, registered keys, and owned accounts.
- [First Call](/typescript/getting-started/first-call): Hit the public testnet with a read-only client. No signer needed.
- [Installation](/typescript/getting-started/installation): Install `@left-curve/sdk` from your package manager. Node 20 or later is required.
- [Project Setup](/typescript/getting-started/project-setup): Wire up signers, chains, and environment variables for a real project.
- [BaseError](/typescript/errors/BaseError): Base class for every SDK error. Carries structured metadata for triage.
- [HttpRequestError](/typescript/errors/HttpRequestError): Thrown when a GraphQL HTTP request fails — non-2xx response, network failure, or GraphQL errors.
- [TimeoutError](/typescript/errors/TimeoutError): Thrown when a request exceeds its configured timeout.
- [UrlRequiredError](/typescript/errors/UrlRequiredError): Thrown by `createTransport` when no URL is supplied and the chain config also lacks one.
- [Clients](/typescript/concepts/clients): **What this teaches:** when to use `createPublicClient` vs `createSignerClient`, and how both relate to `createBaseClient`.
- [Encoding & Types](/typescript/concepts/encoding-and-types): **What this teaches:** base-unit vs human-readable amounts, when to use `Decimal` vs `bigint` vs `number`, and how the SDK's JSON serialization handles snake\_case.
- [Error Handling](/typescript/concepts/error-handling): **What this teaches:** the `BaseError` hierarchy, what each error means, and the current limitation around importing them.
- [Packages](/typescript/concepts/packages): **What this teaches:** which of the six SDK packages to import from, and when reaching for a sub-package is worth it.
- [Rate Limits & Quotas](/typescript/concepts/rate-limits): **What this teaches:** the two server-side limits the indexer enforces, and how to stay under them without auto-throttling.
- [Signers & Authentication](/typescript/concepts/signers-and-authentication): **What this teaches:** the `Signer` interface, the two built-in implementations, and how session keys delegate authority.
- [Subscriptions](/typescript/concepts/subscriptions): **What this teaches:** the WebSocket subscription model, the WS-only vs HTTP-fallback split, and the connection lifecycle.
- [Transactions](/typescript/concepts/transactions): **What this teaches:** the sign → broadcast → poll loop, and where `signAndBroadcastTx` fits.
- [createBaseClient](/typescript/clients/createBaseClient): Factory that builds the bare client object — transport, chain, optional signer, and `extend()`. Used internally by `createPublicClient` and `createSignerClient`; reach for it directly only to compose custom action sets.
- [createPublicClient](/typescript/clients/createPublicClient): Factory that builds a read-only client extended with every query action.
- [createSignerClient](/typescript/clients/createSignerClient): Factory that builds a client with every query action and every signing action.
- [cancelConditionalOrder](/typescript/actions/perps/cancelConditionalOrder): Cancel one conditional order, all for a pair, or every conditional order.
- [cancelPerpsOrder](/typescript/actions/perps/cancelPerpsOrder): Cancel one or all perps orders.
- [depositMargin](/typescript/actions/perps/depositMargin): Deposit `bridge/usdc` collateral into the perps account.
- [getAllPerpsPairStats](/typescript/actions/perps/getAllPerpsPairStats): Read 24h stats for every perps pair.
- [getFeeRateOverride](/typescript/actions/perps/getFeeRateOverride): Read a per-user fee rate override.
- [getPerpsLiquidityDepth](/typescript/actions/perps/getPerpsLiquidityDepth): Read bid and ask depth buckets for a perps pair.
- [getPerpsOrdersByUser](/typescript/actions/perps/getPerpsOrdersByUser): List a user's active perps orders.
- [getPerpsPairParam](/typescript/actions/perps/getPerpsPairParam): Read the parameters of a single perps pair: tick size, margin ratios, max OI, funding rate cap.
- [getPerpsPairParams](/typescript/actions/perps/getPerpsPairParams): Read parameters across every perps pair, paginated.
- [getPerpsPairState](/typescript/actions/perps/getPerpsPairState): Read on-chain pair state — long/short OI, funding per unit, and current funding rate.
- [getPerpsPairStats](/typescript/actions/perps/getPerpsPairStats): Read 24h indexer-computed stats for a single perps pair.
- [getPerpsParam](/typescript/actions/perps/getPerpsParam): Read the global perps parameters: max unlocks, max open orders, fee schedules, funding period, vault config.
- [getPerpsState](/typescript/actions/perps/getPerpsState): Read global runtime state — last funding time, vault share supply, insurance fund balance, treasury.
- [getPerpsUserState](/typescript/actions/perps/getPerpsUserState): Read the perps state for a single user.
- [getPerpsUserStateExtended](/typescript/actions/perps/getPerpsUserStateExtended): Read the extended perps state for a user, with optional PnL, equity, margin, and liquidation flags.
- [getPerpsVaultState](/typescript/actions/perps/getPerpsVaultState): Read vault state — share supply, equity, and the vault's own perps positions.
- [getVaultSnapshots](/typescript/actions/perps/getVaultSnapshots): Read historical vault equity and share supply snapshots over a height range.
- [queryPerpsCandles](/typescript/actions/perps/queryPerpsCandles): Read historical perps candles for a pair at a given interval. Paginated cursor-style.
- [queryPerpsEvents](/typescript/actions/perps/queryPerpsEvents): Read perps events — fills, liquidations, deleverages — paginated cursor-style. Optional filters by user, event type, pair, or block height.
- [setFeeShareRatio](/typescript/actions/perps/setFeeShareRatio): Opt in as a referrer and set the share ratio rebated to referees.
- [setReferral](/typescript/actions/perps/setReferral): Set a referrer/referee mapping for fee sharing.
- [submitConditionalOrder](/typescript/actions/perps/submitConditionalOrder): Submit a single trigger-based conditional perps order.
- [submitConditionalOrders](/typescript/actions/perps/submitConditionalOrders): Submit a batch of trigger-based conditional perps orders in one transaction.
- [submitPerpsOrder](/typescript/actions/perps/submitPerpsOrder): Submit a market or limit perps order, optionally with take-profit and stop-loss children.
- [vaultAddLiquidity](/typescript/actions/perps/vaultAddLiquidity): Move USD margin from the caller's trading account into the perps counterparty
vault and mint LP shares in return.
- [vaultRemoveLiquidity](/typescript/actions/perps/vaultRemoveLiquidity): Burn vault shares to schedule a withdrawal. The corresponding cash is unlocked after the vault cooldown period.
- [withdrawMargin](/typescript/actions/perps/withdrawMargin): Withdraw collateral from the perps account.
- [getPrices](/typescript/actions/oracle/getPrices): Read oracle prices, paginated.
- [accountSubscription](/typescript/actions/indexer/accountSubscription): Subscribe to account creation events for a single user index. WebSocket only.
- [allPairStatsSubscription](/typescript/actions/indexer/allPairStatsSubscription): Subscribe to live 24h stats for every spot pair. Uses WebSocket when available; falls back to HTTP polling.
- [allPerpsPairStatsSubscription](/typescript/actions/indexer/allPerpsPairStatsSubscription): Subscribe to live 24h stats for every perps pair. Uses WebSocket when available; falls back to HTTP polling.
- [blockSubscription](/typescript/actions/indexer/blockSubscription): Subscribe to new finalized blocks. WebSocket only.
- [candlesSubscription](/typescript/actions/indexer/candlesSubscription): Subscribe to live spot candles for a pair and interval. WebSocket only.
- [eventsByAddressesSubscription](/typescript/actions/indexer/eventsByAddressesSubscription): Subscribe to all events touching a set of addresses. WebSocket only.
- [eventsSubscription](/typescript/actions/indexer/eventsSubscription): Subscribe to a filtered live event stream. WebSocket only.
- [perpsCandlesSubscription](/typescript/actions/indexer/perpsCandlesSubscription): Subscribe to live perps candles for a pair and interval. WebSocket only.
- [perpsTradesSubscription](/typescript/actions/indexer/perpsTradesSubscription): Subscribe to live perps trades for a pair. Uses WebSocket when available; falls back to HTTP polling.
- [queryAppSubscription](/typescript/actions/indexer/queryAppSubscription): Subscribe to the live result of a `queryApp` request. Uses WebSocket when available; falls back to HTTP polling.
- [queryBlock](/typescript/actions/indexer/queryBlock): Fetch a block (by height or latest) with its transactions and cron outcomes.
- [queryIndexer](/typescript/actions/indexer/queryIndexer): Send a raw GraphQL request to the indexer and receive the typed response.
- [searchTxs](/typescript/actions/indexer/searchTxs): Search indexed transactions by hash or sender, paginated.
- [tradesSubscription](/typescript/actions/indexer/tradesSubscription): Subscribe to live spot trades for a pair. Uses WebSocket when available; falls back to HTTP polling.
- [transferSubscription](/typescript/actions/indexer/transferSubscription): Subscribe to live transfer events for a single username. WebSocket only.
- [Addr32](/typescript/actions/hyperlane/Addr32): Encode and decode 32-byte Hyperlane addresses. The Hyperlane wire format pads 20-byte EVM addresses to 32 bytes by left-padding with zeros.
- [IncrementalMerkleTree](/typescript/actions/hyperlane/IncrementalMerkleTree): Hyperlane outbox-style incremental Merkle tree of depth 32 with Keccak-256 hashing.
- [Message](/typescript/actions/hyperlane/Message): Encode a Hyperlane mailbox message. Outputs the binary layout the Hyperlane router expects.
- [Metadata](/typescript/actions/hyperlane/Metadata): Encode multisig ISM (Interchain Security Module) metadata: origin merkle tree address, merkle root, index, and validator signatures.
- [TokenMessage](/typescript/actions/hyperlane/TokenMessage): Encode a Hyperlane warp-route token message — recipient, amount, and metadata.
- [getWithdrawalFee](/typescript/actions/gateway/getWithdrawalFee): Read the withdrawal fee for a denom + remote chain pair.
- [transferRemote](/typescript/actions/gateway/transferRemote): Send funds to a remote chain via the gateway contract.
- [batchUpdateOrders](/typescript/actions/dex/batchUpdateOrders): Create and/or cancel multiple limit orders in a single transaction.
- [dexStatus](/typescript/actions/dex/dexStatus): Read whether the DEX is currently paused.
- [getAllPairStats](/typescript/actions/dex/getAllPairStats): Read 24h stats for every trading pair.
- [getOrder](/typescript/actions/dex/getOrder): Read the details of a single active limit order by id.
- [getPair](/typescript/actions/dex/getPair): Read the parameters of a single base/quote trading pair.
- [getPairStats](/typescript/actions/dex/getPairStats): Read 24h indexer-computed stats for a single pair: current price, 24h-ago price, 24h volume, and 24h change.
- [getPairs](/typescript/actions/dex/getPairs): Enumerate all trading pairs and their parameters, paginated.
- [ordersByUser](/typescript/actions/dex/ordersByUser): List a user's active orders across all pairs.
- [provideLiquidity](/typescript/actions/dex/provideLiquidity): Add liquidity to a passive pool. Unbalanced provision is equivalent to an internal swap to reach pool ratio, followed by a balanced provision.
- [queryCandles](/typescript/actions/dex/queryCandles): Read historical candles for a pair at a given interval. Paginated cursor-style.
- [queryTrades](/typescript/actions/dex/queryTrades): Read historical trades, optionally filtered by address. Paginated cursor-style.
- [simulateSwapExactAmountIn](/typescript/actions/dex/simulateSwapExactAmountIn): Quote the output of a swap given an exact input amount and a route.
- [simulateSwapExactAmountOut](/typescript/actions/dex/simulateSwapExactAmountOut): Quote the input needed for a swap given an exact output amount and a route.
- [simulateWithdrawLiquidity](/typescript/actions/dex/simulateWithdrawLiquidity): Simulate burning a given amount of LP tokens. Returns the base/quote coins the burn would yield.
- [swapExactAmountIn](/typescript/actions/dex/swapExactAmountIn): Submit an instant swap with an exact input amount and an optional minimum output for slippage control.
- [swapExactAmountOut](/typescript/actions/dex/swapExactAmountOut): Submit an instant swap with an exact output amount. Excess input is refunded.
- [withdrawLiquidity](/typescript/actions/dex/withdrawLiquidity): Withdraw passive liquidity from a pair by burning LP tokens. The redemption happens at the pool ratio.
- [broadcastTxSync](/typescript/actions/app/broadcastTxSync): Broadcast a signed transaction via the indexer mutation and poll for inclusion.
- [configure](/typescript/actions/app/configure): Update the chain config, the app config, or both. Only the chain owner can submit.
- [execute](/typescript/actions/app/execute): Execute one or more contract messages in a single transaction, with optional funds attached and EIP-712 typed-data overrides.
- [getAppConfig](/typescript/actions/app/getAppConfig): Fetch the app-level configuration: contract addresses, fee rates, liquidation parameters, and minimum deposit per denom.
- [getBalance](/typescript/actions/app/getBalance): Read the balance of a single denom for an address.
- [getBalances](/typescript/actions/app/getBalances): Read a paginated map of every balance held by an address.
- [getCode](/typescript/actions/app/getCode): Fetch a stored Wasm code blob by its hash.
- [getCodes](/typescript/actions/app/getCodes): List stored Wasm codes, paginated.
- [getContractInfo](/typescript/actions/app/getContractInfo): Fetch a contract's metadata (code hash, label, admin) by address.
- [getContractsInfo](/typescript/actions/app/getContractsInfo): List contract metadata across the chain, paginated.
- [getSupplies](/typescript/actions/app/getSupplies): Read a paginated map of total supplies across denoms.
- [getSupply](/typescript/actions/app/getSupply): Read the total supply of a single token.
- [instantiate](/typescript/actions/app/instantiate): Instantiate a contract from an already-uploaded code hash. Returns the derived address and the broadcast receipt.
- [migrate](/typescript/actions/app/migrate): Migrate a contract to a new code hash. Only the contract's admin can call this.
- [queryApp](/typescript/actions/app/queryApp): Send a generic typed query against the app and receive the matching `QueryResponse` variant.
- [queryStatus](/typescript/actions/app/queryStatus): Read the chain id and the latest finalized block.
- [queryTx](/typescript/actions/app/queryTx): Fetch an indexed transaction by hash.
- [queryWasmRaw](/typescript/actions/app/queryWasmRaw): Read a raw base64 value from a contract's storage at a specific key.
- [queryWasmSmart](/typescript/actions/app/queryWasmSmart): Send a typed JSON query to a smart contract and receive the decoded response.
- [signAndBroadcastTx](/typescript/actions/app/signAndBroadcastTx): Sign a list of messages with the client signer and broadcast the resulting transaction. The end-to-end entry point for every mutation.
- [simulate](/typescript/actions/app/simulate): Gas-simulate an unsigned transaction. Returns the simulated gas usage scaled by a default multiplier.
- [storeCode](/typescript/actions/app/storeCode): Upload a Wasm code blob to the chain.
- [storeCodeAndInstantiate](/typescript/actions/app/storeCodeAndInstantiate): Upload a Wasm code blob and instantiate it in a single transaction. Returns the derived contract address.
- [transfer](/typescript/actions/app/transfer): Send a record of `Address -> Coins` from the sender's account.
- [upgrade](/typescript/actions/app/upgrade): Schedule a chain upgrade at a future block. Only the chain owner can submit.
- [createSession](/typescript/actions/account-factory/createSession): Sign a `SigningSessionInfo` payload with the client signer and return the credential bundle. The bundle can then drive [`createSessionSigner`](../../concepts/signers-and-authentication) for delegated signing.
- [forgotUsername](/typescript/actions/account-factory/forgotUsername): List the users associated with a key hash. Useful for username recovery flows.
- [getAccountInfo](/typescript/actions/account-factory/getAccountInfo): Fetch account details (index, owner, username) for a given account address.
- [getAccountSeenNonces](/typescript/actions/account-factory/getAccountSeenNonces): Read the most-recent nonces consumed by an account. Used internally by `signAndBroadcastTx` to compute the next nonce.
- [getAccountStatus](/typescript/actions/account-factory/getAccountStatus): Read the current user state (`active`, `inactive`, or `frozen`) for an account.
- [getAllAccountInfo](/typescript/actions/account-factory/getAllAccountInfo): List every account in the factory, paginated.
- [getCodeHash](/typescript/actions/account-factory/getCodeHash): Read the current code hash for newly-created accounts.
- [getNextAccountIndex](/typescript/actions/account-factory/getNextAccountIndex): Read the index that the next account for a username will receive. Use this to derive a new account's address before creating it.
- [getUser](/typescript/actions/account-factory/getUser): Fetch a user record by index or by name.
- [getUserKeys](/typescript/actions/account-factory/getUserKeys): Fetch the list of public keys associated with a user, via the indexer.
- [registerAccount](/typescript/actions/account-factory/registerAccount): Register an additional account for an existing user.
- [registerUser](/typescript/actions/account-factory/registerUser): Create a new user and their first account in a single transaction. Submitted by the account factory itself (sender-less from the caller's perspective).
- [updateKey](/typescript/actions/account-factory/updateKey): Insert or delete a key on the calling account.
- [updateUsername](/typescript/actions/account-factory/updateUsername): Change the username on the calling account's user record.
- [Dango Rust SDK](/rust): The Rust SDK is a thin GraphQL + REST client over a Dango node, plus key-management and transaction-signing utilities.
- [First call](/rust/getting-started/first-call): A five-minute hello-world that queries chain status with `HttpClient`.
- [Installation](/rust/getting-started/installation): Add `dango-sdk` to a Cargo project.
- [Project setup](/rust/getting-started/project-setup): Wire endpoints, keys, and the async runtime for a real application.
- [Clients](/rust/concepts/clients): **What this teaches:** when to use `HttpClient` and when to use `WsClient`, and what each one is wired to under the hood.
- [Encoding and types](/rust/concepts/encoding-and-types): **What this teaches:** which crates own which user-facing types, how numeric units are represented, and the shape of GraphQL response data.
- [Error handling](/rust/concepts/error-handling): **What this teaches:** the two error shapes in `dango-sdk` — `anyhow::Error` for one-shot calls, [`WsError`](../api/errors/WsError) inside subscription items — and how to recover from each.
- [Rate limits and quotas](/rust/concepts/rate-limits): **What this teaches:** the server-side limits on Dango HTTP and WebSocket endpoints, and how to shape Rust client code around them.
- [Signers and authentication](/rust/concepts/signers-and-authentication): **What this teaches:** how the `Secret` trait, `Secp256k1`/`Eip712`, and `SingleSigner` fit together to sign Dango transactions.
- [Subscriptions](/rust/concepts/subscriptions): **What this teaches:** the `graphql-transport-ws` model, when to multiplex over a [`Session`](../api/clients/Session), and when to open a dedicated connection with [`WsClient::subscribe`](../api/methods/ws-client/subscribe).
- [Transactions](/rust/concepts/transactions): **What this teaches:** the full path from `Message` to confirmed transaction, using only `dango-sdk` primitives.
- [PageInfo](/rust/api/types/PageInfo): Cursor metadata for indexer GraphQL connections.
- [Secret](/rust/api/traits/Secret): A trait abstraction over a private key that can sign Dango transactions.
- [SubscriptionStream](/rust/api/subscriptions/SubscriptionStream): A type alias for the pinned, boxed `Stream` returned by every subscription call.
- [SubscriptionVariables](/rust/api/subscriptions/SubscriptionVariables): Helper trait for subscription variables with an associated subscription type. Lets users call `vars.subscribe(&ws)` instead of `ws.subscribe::<Q>(vars)`.
- [WsClient::connect](/rust/api/methods/ws-client/connect): Open a WebSocket connection and return a [`Session`](../../clients/Session) that can host multiple concurrent subscriptions.
- [WsClient::from_http_url](/rust/api/methods/ws-client/from_http_url): Construct a `WsClient` from an HTTP URL, rewriting the scheme.
- [WsClient::new](/rust/api/methods/ws-client/new): Construct a `WsClient` from a `ws://` or `wss://` URL.
- [WsClient::subscribe](/rust/api/methods/ws-client/subscribe): Open a dedicated WebSocket connection and start a single subscription.
- [SingleSigner::new](/rust/api/methods/single-signer/new): Construct a bare `SingleSigner` with both `user_index` and `nonce` undefined.
- [SingleSigner::new_first_address_available](/rust/api/methods/single-signer/new_first_address_available): Construct a `SingleSigner` by discovering the first account associated with a `Secret`'s `key_hash` via the account factory.
- [SingleSigner::query_next_nonce](/rust/api/methods/single-signer/query_next_nonce): Fetch the next unused nonce for this signer's account.
- [SingleSigner::query_nonce](/rust/api/methods/single-signer/query_nonce): Fetch the next unused nonce. Trait method of `SequencedSigner` (from `dango_types::signer`).
- [SingleSigner::query_user_index](/rust/api/methods/single-signer/query_user_): Fetch this signer's `UserIndex` from the account factory.
- [SingleSigner::sign_transaction](/rust/api/methods/single-signer/sign_transaction): Sign a set of messages and produce a broadcast-ready `Tx`.
- [SingleSigner::unsigned_transaction](/rust/api/methods/single-signer/unsigned_transaction): Build the `UnsignedTx` for a set of messages without producing a signature.
- [SingleSigner::update_nonce](/rust/api/methods/single-signer/update_nonce): Refresh `self.nonce` from the chain. Trait method of `SequencedSigner`.
- [SingleSigner::with_nonce](/rust/api/methods/single-signer/with_nonce): Consume `self` and return a `SingleSigner` with `nonce` defined.
- [SingleSigner::with_query_nonce](/rust/api/methods/single-signer/with_query_nonce): Fetch the next unused nonce from the account and return a `SingleSigner` with `nonce` defined.
- [SingleSigner::with_query_user_index](/rust/api/methods/single-signer/with_query_user_): Fetch the user index from the account factory and return a `SingleSigner` with `user_index` defined.
- [SingleSigner::with_user_index](/rust/api/methods/single-signer/with_user_): Consume `self` and return a `SingleSigner` with `user_index` defined.
- [Session::subscribe](/rust/api/methods/session/subscribe): Multiplex a new GraphQL subscription onto an existing WebSocket session.
- [Keystore::from_file](/rust/api/methods/keystore/from_file): Read and decrypt a keystore file, returning the raw 32-byte private key.
- [Keystore::write_to_file](/rust/api/methods/keystore/write_to_file): Encrypt a `Secret`'s private key and write a pretty-printed JSON keystore file.
- [broadcast_tx](/rust/api/methods/http-client/broadcast_tx): Submit a signed transaction with `tx-sync` semantics: the node accepts or rejects it from the mempool but does not wait for inclusion.
- [paginate_accounts](/rust/api/methods/http-client/paginate_accounts): Fetch every account in the indexer's `accounts` connection, paginating forward.
- [paginate_all](/rust/api/methods/http-client/paginate_all): Paginate through every result of a GraphQL connection using cursor-based pagination.
- [paginate_blocks](/rust/api/methods/http-client/paginate_blocks): Fetch every record in the indexer's `blocks` connection, paginating forward.
- [paginate_events](/rust/api/methods/http-client/paginate_events): Fetch every record in the indexer's `events` connection, paginating forward.
- [paginate_messages](/rust/api/methods/http-client/paginate_messages): Fetch every record in the indexer's `messages` connection, paginating forward.
- [paginate_transactions](/rust/api/methods/http-client/paginate_transactions): Fetch every record in the indexer's `transactions` connection, paginating forward.
- [paginate_transfers](/rust/api/methods/http-client/paginate_transfers): Fetch every record in the indexer's `transfers` connection, paginating forward.
- [query_app](/rust/api/methods/http-client/query_app): Run an app-level query against the node at a given height.
- [query_block](/rust/api/methods/http-client/query_block): Fetch a block by height. Hits the REST endpoint `GET /block/info[/{height}]`.
- [query_block_outcome](/rust/api/methods/http-client/query_block_outcome): Fetch a block's execution outcome. Hits the REST endpoint `GET /block/result[/{height}]`.
- [query_store](/rust/api/methods/http-client/query_store): Read a raw key from the chain's state store, optionally with a Merkle proof.
- [search_tx](/rust/api/methods/http-client/search_tx): Look up a transaction outcome by hash.
- [simulate](/rust/api/methods/http-client/simulate): Dry-run an unsigned transaction against the latest committed state and return its outcome.
- [WsError](/rust/api/errors/WsError): The only public typed error in `dango-sdk`. Returned inside subscription stream items.
- [HttpClient](/rust/api/clients/HttpClient): A GraphQL + REST client over `reqwest` that talks to a Dango node.
- [Keystore](/rust/api/clients/Keystore): An encrypted-on-disk container for a 32-byte private key, using AES-256-GCM with PBKDF2-HMAC-SHA256 key derivation.
- [Session](/rust/api/clients/Session): A live WebSocket session that hosts multiple concurrent subscriptions over a single connection.
- [SingleSigner](/rust/api/clients/SingleSigner): A typestate builder for signing transactions against Dango's single-signature accounts.
- [WsClient](/rust/api/clients/WsClient): A WebSocket factory that speaks `graphql-transport-ws` on top of `tokio-tungstenite` for Dango GraphQL subscriptions.
- [Dango Python SDK](/python): Sync Python client for the Dango perpetual futures exchange. Wraps the GraphQL HTTP and WebSocket endpoints behind three classes: `Exchange` for signed actions, `Info` for read queries and subscriptions, and `Secp256k1Wallet`/`SingleSigner` for keys and nonces.
- [Migrating from the Hyperliquid Python SDK](/python/migration/hyperliquid): You came from `hyperliquid-python-sdk`. The `dango` package ships an HL-shaped facade under `dango.hyperliquid_compatibility` so most of your code keeps working with one-line import swaps. **Read this page first.** There are sharp edges.
- [Missing methods](/python/migration/missing-methods): **What this teaches:** which Hyperliquid-shaped methods exist in the compatibility layer but raise `NotImplementedError`, so you know what to migrate to native equivalents.
- [Info.all_mids (HL-compat)](/python/migration/hl-compat/info/all_mids): HL `allMids` — coin name → mid price string.
- [Info.candles_snapshot (HL-compat)](/python/migration/hl-compat/info/candles_snapshot): HL `candleSnapshot` — OHLCV candles in a time window.
- [Info.disconnect_websocket (HL-compat)](/python/migration/hl-compat/info/disconnect_websocket): Close the underlying WebSocket connection.
- [Info.historical_orders (HL-compat)](/python/migration/hl-compat/info/historical_orders): HL `historicalOrders` — reconstruct order lifecycle from persisted + removed events.
- [Info.l2_snapshot (HL-compat)](/python/migration/hl-compat/info/l2_snapshot): HL `l2Book` — bid/ask depth at the finest bucket.
- [Info.meta (HL-compat)](/python/migration/hl-compat/info/meta): HL `meta` — perp universe metadata.
- [Info.meta_and_asset_ctxs (HL-compat)](/python/migration/hl-compat/info/meta_and_asset_ctxs): HL `metaAndAssetCtxs` — meta bundled with per-asset ctx.
- [Info.name_to_asset (HL-compat)](/python/migration/hl-compat/info/name_to_asset): HL signature — coin name to integer asset index.
- [Info.name_to_pair (HL-compat)](/python/migration/hl-compat/info/name_to_pair): Translate an HL coin name to a Dango `PairId`. Raises `KeyError` on an unknown coin.
- [Info.open_orders (HL-compat)](/python/migration/hl-compat/info/open_orders): HL `openOrders` — flatten Dango's keyed order map to a list.
- [Info.query_order_by_oid (HL-compat)](/python/migration/hl-compat/info/query_order_by_oid): HL `orderStatus` — fetch one order by id. **`user` is accepted-and-ignored.**
- [Info.subscribe (HL-compat)](/python/migration/hl-compat/info/subscribe): Dispatch an HL-shaped `Subscription` dict to the right native subscriber.
- [Info.unsubscribe (HL-compat)](/python/migration/hl-compat/info/unsubscribe): Drop a subscription by id. The `subscription` argument is informational.
- [Info.user_fills (HL-compat)](/python/migration/hl-compat/info/user_fills): HL `userFills` — flat list of trade fills for one user.
- [Info.user_fills_by_time (HL-compat)](/python/migration/hl-compat/info/user_fills_by_time): HL `userFillsByTime` — fills in a time range.
- [Info.user_state (HL-compat)](/python/migration/hl-compat/info/user_state): HL `clearinghouseState` — user margin and asset positions. `dex` is accepted-and-ignored.
- [bulk_cancel](/python/migration/hl-compat/exchange/bulk_cancel): Cancel multiple open orders by chain `oid` in one batched native call.
- [Exchange.bulk_cancel_by_cloid (HL-compat)](/python/migration/hl-compat/exchange/bulk_cancel_by_cloid): Cancel multiple open orders by `cloid` in one batched native call.
- [Exchange.bulk_modify_orders_new (HL-compat)](/python/migration/hl-compat/exchange/bulk_modify_orders_new): Batch a list of cancel + submit pairs into one `batch_update_orders` call.
- [bulk_orders](/python/migration/hl-compat/exchange/bulk_orders): Place multiple Hyperliquid-style orders in one batched native call.
- [cancel](/python/migration/hl-compat/exchange/cancel): Cancel one open order by its on-chain `oid`. The `name` argument is verified for parity (typos fail loudly).
- [Exchange.cancel_by_cloid (HL-compat)](/python/migration/hl-compat/exchange/cancel_by_cloid): Cancel one open order by `cloid`. Hashes the 16-byte HL cloid to Uint64.
- [Exchange.market_close (HL-compat)](/python/migration/hl-compat/exchange/market_close): Reduce-only market order to close the position in `coin`. **`px` is silently ignored.**
- [Exchange.market_open (HL-compat)](/python/migration/hl-compat/exchange/market_open): Place a market order with a slippage cap. **`px` is silently ignored.**
- [Exchange.modify_order (HL-compat)](/python/migration/hl-compat/exchange/modify_order): Atomic cancel + replace, emulated as a single batched action.
- [order](/python/migration/hl-compat/exchange/order): Place a single Hyperliquid-style order. Routes to the native `submit_order`.
- [Exchange.set_expires_after (HL-compat)](/python/migration/hl-compat/exchange/set_expires_after): Record an HL `expiresAfter` ms hint. **Currently a no-op with state storage.**
- [Exchange.set_referrer (HL-compat)](/python/migration/hl-compat/exchange/set_referrer): Bind the signer as a referee of `code` (HL username form).
- [First call](/python/getting-started/first-call): Read public chain state in five minutes. No wallet, no signing, no env vars.
- [Installation](/python/getting-started/installation): Install the `dango` package from PyPI. Requires Python 3.14 or newer.
- [Project setup](/python/getting-started/project-setup): Wire up a real project: pick an environment, configure a signer, hold one `Info` and one `Exchange`.
- [Clients](/python/concepts/clients): **What this teaches:** which of the three Python SDK classes to construct for each kind of work, and how they share state.
- [Encoding & Types](/python/concepts/encoding-and-types): **What this teaches:** how Dango encodes numbers on the wire, where snake\_case vs camelCase boundaries are, and how the SDK's type aliases map to runtime values.
- [Error handling](/python/concepts/error-handling): **What this teaches:** what each SDK exception means, where it is raised, and how to recover.
- [Rate limits & quotas](/python/concepts/rate-limits): **What this teaches:** the two server-side caps that affect Python SDK users, and how to stay under them.
- [Signers & Authentication](/python/concepts/signers): **What this teaches:** how Dango separates keys from accounts, how the `Wallet` protocol abstracts signing, and what `SingleSigner` does on top.
- [Subscriptions](/python/concepts/subscriptions): **What this teaches:** how the WebSocket layer is wired, the per-connection limits, and what the callback contract is.
- [Transactions](/python/concepts/transactions): **What this teaches:** what happens between `exchange.submit_order(...)` and a tx hash, and what to do when something diverges.
- [Addr](/python/api/types/Addr): A Dango account or contract address. `NewType("Addr", str)` — at runtime it is a plain `str`.
- [AllForPair](/python/api/types/AllForPair): Cancel every conditional order on one pair.
- [Block](/python/api/types/Block): A block payload from the `subscribe_block` stream. Keys are camelCase (indexer wire shape).
- [CancelAction](/python/api/types/CancelAction): User-facing form of a cancel request. Pass to [`batch_update_orders`](../methods/exchange/batch_update_orders).
- [CandleInterval](/python/api/types/CandleInterval): OHLCV candle interval enum. Wire form is the bare uppercase name.
- [ClientOrderId](/python/api/types/ClientOrderId): A client-assigned order id. `NewType("ClientOrderId", str)` — at runtime it is a plain `str` (encoding a `Uint64`).
- [ClientOrderIdRef](/python/api/types/ClientOrderIdRef): User-facing wrapper around a client-assigned order id. Disambiguates from `OrderId` at runtime.
- [ConditionalOrderRef](/python/api/types/ConditionalOrderRef): User-facing form of a single conditional-order cancel target.
- [Connection](/python/api/types/Connection): A page of results plus its `PageInfo` cursors. Generic over the node type.
- [Hash256](/python/api/types/Hash256): A 256-bit hash, uppercase hex. `NewType("Hash256", str)` — at runtime it is a plain `str`.
- [OrderId](/python/api/types/OrderId): A chain-assigned order id. `NewType("OrderId", str)` — at runtime it is a plain `str` (encoding a `Uint64`).
- [OrderRemoved](/python/api/types/OrderRemoved): Event payload for `eventType == "order_removed"`.
- [PageInfo](/python/api/types/PageInfo): Cursor-pagination metadata. Mirrors the GraphQL `PageInfo` object.
- [PairId](/python/api/types/PairId): A perps pair identifier. `NewType("PairId", str)` — at runtime it is a plain `str`.
- [PairParam](/python/api/types/PairParam): Per-pair perps parameters: tick size, margin ratios, vault tuning, bucket sizes.
- [PairState](/python/api/types/PairState): Per-pair runtime state: open interest, funding accumulator, current funding rate.
- [Param](/python/api/types/Param): Global perps parameters.
- [PerpsCandle](/python/api/types/PerpsCandle): One OHLCV candle from the indexer. Keys are camelCase (indexer wire shape).
- [PerpsEvent](/python/api/types/PerpsEvent): One indexer event record. Keys are camelCase (indexer wire shape).
- [PerpsEventSortBy](/python/api/types/PerpsEventSortBy): Sort order for indexer event queries.
- [PerpsPairStats](/python/api/types/PerpsPairStats): 24-hour price and volume stats for one pair. Keys are camelCase (indexer wire shape).
- [Position](/python/api/types/Position): One open perps position. Returned inside [`UserState`](./UserState).
- [PositionExtended](/python/api/types/PositionExtended): A position plus computed unrealized PnL / funding / liquidation price.
- [QueryOrderResponse](/python/api/types/QueryOrderResponse): A resting limit order. The shape returned by [`Info.order`](../methods/info/order).
- [QueryOrdersByUserResponseItem](/python/api/types/QueryOrdersByUserResponseItem): One item in [`Info.orders_by_user`](../methods/info/orders_by_user)'s response map. Same shape as `QueryOrderResponse` minus `user` (the map is already keyed by user).
- [ReasonForOrderRemoval](/python/api/types/ReasonForOrderRemoval): Reason carried on `OrderRemoved` / `ConditionalOrderRemoved` events.
- [SignDoc](/python/api/types/SignDoc): What gets canonical-JSON encoded and SHA-256 hashed before signing.
- [State](/python/api/types/State): Global perps runtime state.
- [SubmitAction](/python/api/types/SubmitAction): User-facing form of a submit request. Pass to [`batch_update_orders`](../methods/exchange/batch_update_orders).
- [TimeInForce](/python/api/types/TimeInForce): Limit-order time-in-force enum.
- [Trade](/python/api/types/Trade): A real-time perps trade fill from the `subscribe_perps_trades` stream. Keys are camelCase (indexer wire shape).
- [TriggerDirection](/python/api/types/TriggerDirection): Conditional-order trigger direction.
- [Tx](/python/api/types/Tx): A signed transaction ready for `Info.broadcast_tx_sync`.
- [UnsignedTx](/python/api/types/UnsignedTx): A transaction body ready for `Info.simulate`.
- [UserState](/python/api/types/UserState): A user's deposited margin, vault shares, open positions, and pending unlocks.
- [UserStateExtended](/python/api/types/UserStateExtended): A user's state plus computed equity / margin / PnL fields.
- [run](/python/api/methods/websocket-manager/run): `threading.Thread` entry point. Blocks in `run_forever()` until `stop()`.
- [stop](/python/api/methods/websocket-manager/stop): Signal shutdown and close the underlying WebSocket.
- [subscribe](/python/api/methods/websocket-manager/subscribe): Register a subscription. Returns an int id usable with `unsubscribe`.
- [unsubscribe](/python/api/methods/websocket-manager/unsubscribe): Drop a subscription locally and tell the server to stop streaming.
- [all_perps_pair_stats](/python/api/methods/info/all_perps_pair_stats): 24-hour stats for every active pair.
- [broadcast_tx_sync](/python/api/methods/info/broadcast_tx_sync): Submit a signed `Tx`. Returns the BroadcastTxOutcome envelope.
- [disconnect_websocket](/python/api/methods/info/disconnect_websocket): Close the WebSocket connection and clean up the manager thread.
- [liquidity_depth](/python/api/methods/info/liquidity_depth): Aggregated bid/ask depth at a chosen price-bucket granularity.
- [order](/python/api/methods/info/order): Fetch a single resting limit order by id. Returns `None` if the order does not exist.
- [orders_by_user](/python/api/methods/info/orders_by_user): All resting limit orders for one user, keyed by chain `OrderId`.
- [pair_param](/python/api/methods/info/pair_param): Per-pair parameters. Returns `None` if the pair is not configured.
- [pair_params](/python/api/methods/info/pair_params): Enumerate per-pair parameters; paginated.
- [pair_state](/python/api/methods/info/pair_state): Per-pair runtime state: open interest, funding accumulator, current funding rate.
- [pair_states](/python/api/methods/info/pair_states): Enumerate per-pair runtime states; paginated.
- [perps_candles](/python/api/methods/info/perps_candles): OHLCV candles for one pair at one interval; cursor-paginated.
- [perps_events](/python/api/methods/info/perps_events): Indexer event stream with filter and sort knobs; cursor-paginated.
- [perps_events_all](/python/api/methods/info/perps_events_all): Iterate every perps event matching the filter, walking pages internally.
- [perps_pair_stats](/python/api/methods/info/perps_pair_stats): 24-hour price/volume stats for one pair.
- [perps_param](/python/api/methods/info/perps_param): Global perps parameters: fee schedules, OI caps, funding period, batch size, vault settings.
- [perps_state](/python/api/methods/info/perps_state): Global perps runtime state: last funding time, vault share supply, treasury, insurance fund.
- [query_app](/python/api/methods/info/query_app): Generic `queryApp` wrapper. Returns the raw kind-keyed envelope.
- [query_app_multi](/python/api/methods/info/query_app_multi): Atomically run multiple queries at one block height. Each result is wrapped as `{"Ok": <value>}` or `{"Err": "<msg>"}` so partial failures do not abort the batch.
- [query_app_smart](/python/api/methods/info/query_app_smart): Convenience wrapper for `{wasm_smart: ...}` queries; unwraps the envelope and returns the contract response directly.
- [query_status](/python/api/methods/info/query_status): Chain ID and latest block info.
- [simulate](/python/api/methods/info/simulate): Dry-run an `UnsignedTx`. Returns `gas_used`, `gas_limit`, and the simulated result.
- [subscribe_block](/python/api/methods/info/subscribe_block): Stream every newly-finalized block.
- [subscribe_perps_candles](/python/api/methods/info/subscribe_perps_candles): Stream OHLCV candles for one pair at one interval.
- [subscribe_perps_trades](/python/api/methods/info/subscribe_perps_trades): Stream real-time perps trade fills for one pair.
- [subscribe_query_app](/python/api/methods/info/subscribe_query_app): Re-run a `queryApp` request every N blocks. The callback receives the contract response under `payload["response"]`.
- [subscribe_user_events](/python/api/methods/info/subscribe_user_events): Stream events for one user, optionally filtered by `event_type`.
- [unsubscribe](/python/api/methods/info/unsubscribe): Drop a subscription locally and tell the server to stop streaming.
- [user_state](/python/api/methods/info/user_state): A user's deposited margin, positions, vault shares, pending unlocks.
- [user_state_extended](/python/api/methods/info/user_state_extended): `user_state` plus computed equity, margin, PnL fields. Each computed field is gated by an `include_*` flag so the contract can skip the work when not needed.
- [volume](/python/api/methods/info/volume): A user's cumulative trading volume in USD. Used for fee-tier resolution.
- [add_liquidity](/python/api/methods/exchange/add_liquidity): Debit USD from the trading margin to mint counterparty-vault LP shares.
- [batch_update_orders](/python/api/methods/exchange/batch_update_orders): Submit and cancel multiple orders atomically in one transaction.
- [cancel_conditional_order](/python/api/methods/exchange/cancel_conditional_order): Cancel a conditional order by `ConditionalOrderRef`, by `AllForPair`, or `"all"` for every conditional order.
- [cancel_order](/python/api/methods/exchange/cancel_order): Cancel an open order by chain `OrderId`, by `ClientOrderIdRef`, or `"all"` to cancel every open order.
- [deposit_margin](/python/api/methods/exchange/deposit_margin): Deposit USDC into the perps margin sub-account. Amount is in **base units** (Uint128).
- [liquidate](/python/api/methods/exchange/liquidate): Force-close an underwater user's positions. Permissionless — anyone can call.
- [remove_liquidity](/python/api/methods/exchange/remove_liquidity): Burn LP shares to schedule a counterparty-vault withdrawal (subject to cooldown).
- [set_referral](/python/api/methods/exchange/set_referral): Bind the signer as a referee of `referrer`. Accepts a user\_index `int` or a username `str`.
- [submit_conditional_order](/python/api/methods/exchange/submit_conditional_order): Place a conditional (TP/SL) order. Reduce-only by construction.
- [submit_limit_order](/python/api/methods/exchange/submit_limit_order): Place a limit order. Convenience wrapper over [`submit_order`](./submit_order).
- [submit_market_order](/python/api/methods/exchange/submit_market_order): Place a market order with a slippage cap. Convenience wrapper over [`submit_order`](./submit_order).
- [submit_order](/python/api/methods/exchange/submit_order): Place a single perps order. Size is signed: positive = buy, negative = sell.
- [withdraw_margin](/python/api/methods/exchange/withdraw_margin): Withdraw USDC from the perps margin sub-account. Amount is in **USD** (6-decimal `UsdValue`).
- [dango_decimal](/python/api/helpers/dango_decimal): Return the canonical fixed-decimal string form of `x`. Raises if precision is lost.
- [paginate_all](/python/api/helpers/paginate_all): Yield every node across all forward-paginated pages.
- [sign_doc_canonical_json](/python/api/helpers/sign_doc_canonical_json): Encode a `SignDoc` as canonical JSON: recursive `sort_keys`, no whitespace, drops `None` from `data`.
- [sign_doc_sha256](/python/api/helpers/sign_doc_sha256): SHA-256 digest of a `SignDoc`'s canonical JSON. The 32-byte payload that gets signed.
- [ClientError](/python/api/errors/ClientError): Raised on a 4xx HTTP response from the GraphQL endpoint.
- [Error](/python/api/errors/Error): Base class for all SDK-raised exceptions.
- [GraphQLError](/python/api/errors/GraphQLError): Raised when a GraphQL response carries a non-empty `errors` array, or is missing both `data` and `errors`.
- [ServerError](/python/api/errors/ServerError): Raised on a 5xx HTTP response, network-level failure, or non-JSON body from the GraphQL endpoint.
- [TxFailed](/python/api/errors/TxFailed): Raised when `broadcastTxSync` returns an `err` result.
- [API](/python/api/classes/API): Sync GraphQL POST client. Base class for [`Info`](./Info) and [`Exchange`](./Exchange).
- [Exchange](/python/api/classes/Exchange): Build, sign, and broadcast Dango perps transactions on behalf of one account. Subclass of [`API`](./API).
- [Info](/python/api/classes/Info): Low-level GraphQL query primitives over HTTP plus subscription transport over WebSocket. Subclass of [`API`](./API).
- [Secp256k1Wallet](/python/api/classes/Secp256k1Wallet): Holds a 32-byte secp256k1 secret plus the Dango account address it controls. The only `Wallet`-protocol implementation that ships in tree.
- [SingleSigner](/python/api/classes/SingleSigner): Stateful per-account signer; tracks `user_index` and `next_nonce`, produces signed `Tx` envelopes.
- [WebsocketManager](/python/api/classes/WebsocketManager): Thread-based `graphql-transport-ws` subscription manager. Subclass of `threading.Thread` (`daemon=True`).