> ## Documentation Index > Fetch the complete documentation index at: https://docs.xo.market/llms.txt > Use this file to discover all available pages before exploring further. # Get single order by ID > Get a single order by id. ## OpenAPI ````yaml /api-reference/openapi.yaml get /data/order/{id} openapi: 3.0.3 info: title: XO Orderbook API description: | Public REST surface of the XO CLOB API. XO mainnet chain id is `3223`. The EIP-712 order domain is `XO Market CLOB` with `verifyingContract` set to the [CTF Exchange](/) address. See [Smart accounts](../guides/smart-accounts) for the smart-account identity model and ERC-1271 order signing. Wire conventions: * Prices are trimmed decimal strings (e.g. `"0.5"`, `"0.555"`). * Sizes are decimal-string integers in human shares. * Timestamps in trade and book responses are stringified Unix seconds / milliseconds (the SDK uses `TimestampSeconds` / `TimestampMilliSeconds`). * Token IDs are decimal U256 strings; condition IDs are `0x`-prefixed 32-byte hex. version: 1.0.0 contact: name: XO Market url: https://beta.xo.market servers: - url: https://orderbooks.xo.market description: Mainnet (XO chain id 3223) security: [] tags: - name: Authentication description: >- Create and manage API keys. The L1 ClobAuth EIP-712 flow mints HMAC credentials that authenticate every other private request. - name: Market Data description: >- Public reads for books, prices, midpoints, spreads, last trades, and price history. Also includes server time and per-token configuration. - name: Markets description: >- Discovery for tradable markets, including pagination and SDK-compatible simplified shapes. - name: Trade description: Place, cancel, and inspect orders and trades for the authenticated maker. - name: Account description: Maker balance, allowance, positions, and claimable settled positions. paths: /data/order/{id}: get: tags: - Trade summary: Get single order by ID description: Get a single order by id. parameters: - in: path name: id required: true schema: type: string responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/OpenOrder' example: id: '101' market: >- 0x39a12d52b63969654926e095ddd96f5c459112714da03edca769aa58173c78fb asset_id: >- 26516164265702901957933644848127860370782874751279270726689263951695181556943 outcome: 'Yes' side: BUY price: '0.547' original_size: '100000000' size_matched: '15000000' status: live created_at: 1779355800 order_hash: >- 0x0011223344556677889900aabbccddeeff00112233445566778899aabbccddee maker_address: '0xCAFE000000000000000000000000000000000A11' owner: 346629a1-8226-5a85-823f-3a25ae818e10 expiration: '0' order_type: GTC '401': $ref: '#/components/responses/Error401' '404': $ref: '#/components/responses/Error404' security: - L2HMAC: [] x-codeSamples: - lang: Rust label: xo-orderbook-client-rs source: | // Requires an authenticated client. let order = client .order("0x0011223344556677889900aabbccddeeff00112233445566778899aabbccddee") .await?; println!("status: {:?}", order.status); components: schemas: OpenOrder: type: object required: - id - market - asset_id - outcome - side - price - original_size - size_matched - status - created_at - order_hash - maker_address - owner - expiration - order_type properties: id: type: string description: | Numeric order id, serialised as a string for SDK compatibility (`py-clob-client` reads `id` as `str`). market: type: string description: conditionId asset_id: type: string description: | Decimal U256 token id (the canonical CLOB `asset_id`). Empty string when the gateway has no MarketInfo registered for the order's market. outcome: type: string enum: - 'Yes' - 'No' side: type: string enum: - BUY - SELL price: type: string description: Trimmed decimal (signed-order price). original_size: type: string description: Signed `makerAmount`/`takerAmount` converted to human shares. size_matched: type: string description: Cumulative fills so far, human shares. status: type: string enum: - live - delayed created_at: type: integer format: int64 description: Unix seconds, bare integer (NOT stringified). order_hash: type: string description: 0x-prefixed keccak256 of the EIP-712 typed-data digest. maker_address: type: string description: Wallet address (0x-prefixed hex) that placed the order. owner: type: string format: uuid description: | UUIDv5 of the authenticated owner (deterministic from `maker_address` via XO_WALLET_OWNER_NAMESPACE). Stable across sessions — integrators can pre-compute the mapping. expiration: type: string description: Unix seconds as decimal string. `"0"` = no expiry (GTC). order_type: type: string enum: - GTC - GTD - FOK - FAK ErrorResponse: type: object required: - error properties: error: type: string responses: Error401: description: | Authentication failure. L1 ClobAuth (wallet) or L2 HMAC (API key) headers were missing, malformed, expired, or did not match the requested resource. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: l1_required: summary: L1 ClobAuth headers missing value: error: L1 ClobAuth headers required l2_required: summary: HMAC credentials missing value: error: HMAC L2 credentials required address_mismatch: summary: L1-recovered address does not match request value: error: L1 auth address does not match request address Error404: description: | Resource not found. The message embeds the requested identifier verbatim (`market not found: 0x…`, `trade not found: 0x…`, `no API key found for address 0x…`). Read endpoints that fail token lookup return the canonical CLOB string `"No orderbook exists for the requested token id"`. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: market_not_found: summary: unknown condition_id value: error: >- market not found: 0x0000000000000000000000000000000000000000000000000000000000000000 no_orderbook: summary: unknown token_id on a read endpoint value: error: No orderbook exists for the requested token id trade_not_found: summary: unknown trade id value: error: >- trade not found: 0x0000000000000000000000000000000000000000000000000000000000000000 api_key_not_found: summary: derive-api-key called for an address with no key value: error: >- no API key found for address 0xCAFE000000000000000000000000000000000A11 securitySchemes: L2HMAC: type: apiKey in: header name: XO_API_KEY description: >- L2 HMAC request signature. See [Authentication](/api-reference/authentication). ````