# Market Orderbook ## Get Prediction Market Orderbook > Get the full bid/ask orderbook for a Polymarket prediction market. Data is\ > polled from the Polymarket CLOB API every \~60 seconds with MD5 change detection.\ > \ > \*\*What it helps to answer:\*\*\ > \ > 1\. \*\*What is the current bid/ask depth for a prediction market?\*\*\ > 2\. \*\*How much liquidity is available at each price level?\*\*\ > 3\. \*\*What is the current spread?\*\* ```json {"openapi":"3.1.0","info":{"title":"Nansen API","version":"1.0.0"},"servers":[{"url":"https://api.nansen.ai"}],"security":[{"ApiKeyAuth":[]}],"components":{"securitySchemes":{"ApiKeyAuth":{"type":"apiKey","in":"header","name":"apiKey","description":"API key for authentication"}},"schemas":{"OrderbookRequest":{"properties":{"market_id":{"type":"string","maxLength":100,"minLength":1,"title":"Market Id","description":"Polymarket market ID"},"pagination":{"$ref":"#/components/schemas/PaginationRequest"}},"additionalProperties":false,"type":"object","required":["market_id"],"title":"OrderbookRequest","description":"Request for orderbook 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Data is\npolled from the Polymarket CLOB API every ~60 seconds with MD5 change detection.\n\n**What it helps to answer:**\n\n1. **What is the current bid/ask depth for a prediction market?**\n2. **How much liquidity is available at each price level?**\n3. **What is the current spread?**","operationId":"get_prediction_market_orderbook_api_v1_prediction_market_orderbook_post","requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/OrderbookRequest"}}},"required":true},"responses":{"200":{"description":"Orderbook data","content":{"application/json":{"schema":{"$ref":"#/components/schemas/OrderbookResponse"}}},"headers":{"X-Nansen-Credits-Used":{"$ref":"#/components/headers/XNansenCreditsUsed"},"X-Nansen-Credits-Remaining":{"$ref":"#/components/headers/XNansenCreditsRemaining"},"Payment-Receipt":{"$ref":"#/components/headers/PaymentReceipt"},"RateLimit-Limit":{"$ref":"#/components/headers/RateLimitLimit"},"RateLimit-Remaining":{"$ref":"#/components/headers/RateLimitRemaining"},"RateLimit-Reset":{"$ref":"#/components/headers/RateLimitReset"},"X-RateLimit-Limit-Second":{"$ref":"#/components/headers/XRateLimitLimitSecond"},"X-RateLimit-Remaining-Second":{"$ref":"#/components/headers/XRateLimitRemainingSecond"},"X-RateLimit-Limit-Minute":{"$ref":"#/components/headers/XRateLimitLimitMinute"},"X-RateLimit-Remaining-Minute":{"$ref":"#/components/headers/XRateLimitRemainingMinute"}}},"400":{"description":"Bad Request","$ref":"#/components/responses/BadRequestError"},"401":{"description":"Unauthorized","$ref":"#/components/responses/UnauthorizedError"},"402":{"description":"Payment Required","$ref":"#/components/responses/PaymentRequiredError"},"403":{"description":"Forbidden","$ref":"#/components/responses/ForbiddenError"},"404":{"description":"Not Found","$ref":"#/components/responses/NotFoundError"},"422":{"description":"Unprocessable Content","$ref":"#/components/responses/ValidationError"},"429":{"description":"Too Many Requests","$ref":"#/components/responses/TooManyRequestsError"},"500":{"description":"Internal Server Error","$ref":"#/components/responses/InternalServerError"}}}}}} ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.nansen.ai/api/prediction-market/market-orderbook.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.