> ## Documentation Index > Fetch the complete documentation index at: https://docs.polyorderbooks.com/llms.txt > Use this file to discover all available pages before exploring further. # Polymarket Market Price History API — All Tokens in One Market > Get the full price history (probabilities from 0.0 to 1.0) for **all** outcomes of one market in a single request. Use this when you want a market-wide price series — for example charting how a Yes/No market repriced over its life. One call returns every token, so you do not need to know token IDs in advance. **When to use the token-scoped route instead:** if you already hold a CLOB token id and want only that one series, use `/v1/tokens/{token_id}/prices`. It returns a single token and is the cheaper call for that case. **Pagination limits:** - Default `limit`: 100 points per page - Maximum `limit`: 200 points per page - Use `cursor` from `metadata.next_cursor` to fetch the next page **Aggregation:** Prices are averaged when aggregating to higher resolutions. **Format:** JSON only. Covers Polymarket crypto and sports markets from the PolyOrderbooks historical archive. ## OpenAPI ````yaml /openapi.json get /v1/markets/{id_or_slug}/prices openapi: 3.1.0 info: title: PolyOrderbooks API description: > # PolyOrderbooks API Historical Polymarket **crypto** and **sports** market data — discovery, prices, liquidity metrics, and L2 order books. Read paths query our historical data store; they never call Polymarket live. ## Categories `api.polyorderbooks.com` serves **crypto** and **sports** from one API. Pass `category=crypto` or `category=sports` to pin a request to one archive, or omit it for the union of both, ordered by `updated_at` across archives. ## Base URL `https://api.polyorderbooks.com` ## Authentication All `/v1/*` data routes require an API key. Send `X-API-Key: pob_…` or `Authorization: Bearer pob_…`. Dashboard JWT session tokens are **not** accepted on data routes. ## Plans (hosted) | Plan | Req/min | Req/day | Finest resolution | History | | --- | --- | --- | --- | --- | | Starter | 60 | 1,000 | 250ms | 3 days | | Pro | 300 | 50,000 | 250ms | 30 days | ## Workflow 1. `GET /v1/markets` — discover 2. `GET /v1/markets/{id_or_slug}` — detail 3. `GET /v1/markets/{id_or_slug}/books` — history version: 0.1.0 servers: - url: https://api.polyorderbooks.com description: Production security: [] tags: - name: Discovery description: >- Discover series, events, and markets. Use returned ids or slugs in History endpoints. - name: History description: Historical metrics, prices, and L2 order book snapshots. - name: Utility description: Usage and account metadata. - name: Backtest AI description: Natural-language and Strategy Builder backtesting over resolved markets. paths: /v1/markets/{id_or_slug}/prices: get: tags: - History summary: Get price history for every token in a market description: >- Get the full price history (probabilities from 0.0 to 1.0) for **all** outcomes of one market in a single request. Use this when you want a market-wide price series — for example charting how a Yes/No market repriced over its life. One call returns every token, so you do not need to know token IDs in advance. **When to use the token-scoped route instead:** if you already hold a CLOB token id and want only that one series, use `/v1/tokens/{token_id}/prices`. It returns a single token and is the cheaper call for that case. **Pagination limits:** - Default `limit`: 100 points per page - Maximum `limit`: 200 points per page - Use `cursor` from `metadata.next_cursor` to fetch the next page **Aggregation:** Prices are averaged when aggregating to higher resolutions. **Format:** JSON only. Covers Polymarket crypto and sports markets from the PolyOrderbooks historical archive. operationId: get_market_prices_v1_markets__id_or_slug__prices_get parameters: - name: id_or_slug in: path required: true schema: type: string minLength: 1 maxLength: 200 description: Market ID or market slug. examples: - '618831' title: Id Or Slug description: Market ID or market slug. - name: start_ts in: query required: true schema: type: string description: Inclusive range start. Accepts ISO 8601 timestamp or Unix seconds. examples: - '2025-09-01T00:00:00Z' - '1756684800' title: Start Ts description: Inclusive range start. Accepts ISO 8601 timestamp or Unix seconds. - name: end_ts in: query required: true schema: type: string description: Exclusive range end. Accepts ISO 8601 timestamp or Unix seconds. examples: - '2025-09-05T00:00:00Z' - '1757030400' title: End Ts description: Exclusive range end. Accepts ISO 8601 timestamp or Unix seconds. - name: resolution in: query required: true schema: $ref: '#/components/schemas/Resolution' description: Aggregation bucket size. description: Aggregation bucket size. - name: limit in: query required: false schema: type: integer minimum: 1 description: >- Maximum number of points to return in this page. Default: 100, max: 200. examples: - 100 default: 100 title: Limit description: >- Maximum number of points to return in this page. Default: 100, max: 200. - name: cursor in: query required: false schema: anyOf: - type: string - type: 'null' description: Opaque cursor from a previous response metadata.next_cursor. title: Cursor description: Opaque cursor from a previous response metadata.next_cursor. - name: category in: query required: false schema: type: string enum: - crypto - sports description: >- Restrict results to one category. Omit to search every category this deployment holds. title: Category description: >- Restrict results to one category. Omit to search every category this deployment holds. responses: '200': description: Historical prices for all tokens in the market. content: application/json: schema: $ref: '#/components/schemas/PricesResponseAllTokens' '400': description: >- Invalid timestamp format, limit, cursor, or market point constraints. content: application/json: examples: invalid_limit: value: error: bad_request message: 'limit too large. Requested: 250, Maximum: 200' small_limit: value: error: bad_request message: 'limit too small for this market. Minimum required: 3' many_tokens: value: error: bad_request message: >- Market has more than 200 tokens. Use /v1/tokens/{token_id}/prices instead. schema: $ref: '#/components/schemas/ErrorResponse' '401': description: API key is missing, invalid, or expired. content: application/json: example: error: unauthorized message: Invalid or expired API key. schema: $ref: '#/components/schemas/ErrorResponse' '403': description: >- Plan does not allow the requested data point, granularity, or date range. content: application/json: example: error: forbidden message: Your plan does not allow historical order books. schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Requested resource (market or token) was not found. content: application/json: examples: market: value: error: not_found message: 'Market not found: 618831' token: value: error: not_found message: 'Token not found: 12345' schema: $ref: '#/components/schemas/ErrorResponse' '422': description: Validation error for one or more request parameters. content: application/json: example: detail: - loc: - query - resolution msg: >- Unsupported resolution '2m'. Allowed: 250ms, 1s, 60s, 1m, 5m, 10m, 15m, 1h, 6h, 1d type: enum '429': description: Rate limit exceeded for the current API key. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: rate_limited message: Rate limit exceeded. Please try again later. '500': description: Unexpected server-side error. content: application/json: example: error: internal_error message: Failed to fetch data. schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: Resolution: type: string enum: - 250ms - 1s - 1m - 5m - 10m - 15m - 1h - 6h - 1d title: Resolution description: Supported time resolutions for historical endpoints. PricesResponseAllTokens: properties: market_id: type: string title: Market Id description: Canonical market ID. examples: - '618831' resolution: type: string title: Resolution description: Applied resolution. examples: - 1h tokens: additionalProperties: type: string type: object title: Tokens description: Mapping of token label to token ID. examples: - 'No': '12346' 'Yes': '12345' data: additionalProperties: items: $ref: '#/components/schemas/PriceDataPoint' type: array type: object title: Data description: Time series points grouped by token label. metadata: $ref: '#/components/schemas/HistoryPageMetadata' description: Pagination metadata for this history page. type: object title: PricesResponseAllTokens description: Response for `GET /markets/{id_or_slug}/prices`. example: data: 'No': - p: 0.29 t: '2025-09-05T10:00:00Z' - p: 0.27 t: '2025-09-05T11:00:00Z' 'Yes': - p: 0.71 t: '2025-09-05T10:00:00Z' - p: 0.73 t: '2025-09-05T11:00:00Z' market_id: '618831' metadata: count: 4 limit: 100 resolution: 1h tokens: 'No': '12346' 'Yes': '12345' ErrorResponse: properties: error: type: string title: Error description: Stable machine-readable code. Branch on this, not on `message`. examples: - bad_request - unauthorized - forbidden - not_found - rate_limited message: type: string title: Message description: Human-readable explanation, usually naming the offending value. examples: - >- Unsupported resolution '30s'. Allowed: 250ms, 1s, 60s, 1m, 5m, 10m, 15m, 1h, 6h, 1d required: - error - message type: object title: ErrorResponse description: Error envelope returned for every 4xx and 5xx response. PriceDataPoint: properties: t: type: string format: date-time title: T description: Bucket timestamp in ISO 8601 format. examples: - '2025-09-05T12:00:00Z' p: type: number title: P description: Token price/probability between 0.0 and 1.0. examples: - 0.73 type: object title: PriceDataPoint description: Single token price data point. HistoryPageMetadata: properties: count: type: integer title: Count description: Number of points returned in this page. limit: type: integer title: Limit description: Effective page limit used for this response. next_cursor: anyOf: - type: string - type: 'null' title: Next Cursor description: Opaque cursor for the next page. Null when the page is complete. type: object title: HistoryPageMetadata description: Pagination metadata for history responses. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.