# Market Categories ## Get Prediction Market Categories > Get aggregated statistics for all prediction market categories. Shows volume,\ > open interest, and top markets per category.\ > \ > \*\*What it helps to answer:\*\*\ > \ > 1\. \*\*Which prediction market categories have the most activity?\*\*\ > 2\. \*\*What is the volume breakdown by category?\*\*\ > 3\. \*\*What are the top markets in each category?\*\* ```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":{"CategoriesRequest":{"properties":{"pagination":{"$ref":"#/components/schemas/PaginationRequest"}},"additionalProperties":false,"type":"object","title":"CategoriesRequest","description":"Request for categories endpoint (pagination only)."},"PaginationRequest":{"properties":{"page":{"type":"integer","minimum":1,"title":"Page","description":"Page number 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Shows volume,\nopen interest, and top markets per category.\n\n**What it helps to answer:**\n\n1. **Which prediction market categories have the most activity?**\n2. **What is the volume breakdown by category?**\n3. **What are the top markets in each category?**","operationId":"get_prediction_market_categories_api_v1_prediction_market_categories_post","requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CategoriesRequest"}}},"required":true},"responses":{"200":{"description":"Category data","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CategoriesResponse"}}},"headers":{"X-Nansen-Credits-Used":{"$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-categories.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.