Coinbase

Coinbase Market Data API

Access public market data including products, order books, trades, and candles without authentication.

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OpenAPI Specification

openapi: 3.1.0
info:
  title: Coinbase Advanced Trade Accounts Market Data API
  description: The Coinbase Advanced Trade API provides programmatic access to advanced trading features on the Coinbase platform. Developers can automate market, limit, and stop-limit orders, manage portfolios, retrieve real-time and historical market data, and monitor fees. The REST API is available at api.coinbase.com/api/v3/brokerage and supports authenticated access using API keys with HMAC SHA-256 signatures. Public market data endpoints do not require authentication.
  version: '3.0'
  contact:
    name: Coinbase Developer Support
    url: https://help.coinbase.com
  termsOfService: https://www.coinbase.com/legal/user-agreement
servers:
- url: https://api.coinbase.com/api/v3/brokerage
  description: Production Server
security:
- apiKeyAuth: []
tags:
- name: Market Data
  description: Access public market data including products, order books, trades, and candles without authentication.
paths:
  /best_bid_ask:
    get:
      operationId: getBestBidAsk
      summary: Get best bid and ask
      description: Retrieves the best bid and ask prices for the specified products. This endpoint is publicly accessible.
      tags:
      - Market Data
      security: []
      parameters:
      - name: product_ids
        in: query
        description: List of product IDs to get bid/ask for
        schema:
          type: array
          items:
            type: string
      responses:
        '200':
          description: Successfully retrieved best bid and ask
          content:
            application/json:
              schema:
                type: object
                properties:
                  pricebooks:
                    type: array
                    items:
                      $ref: '#/components/schemas/PriceBook'
  /product_book:
    get:
      operationId: getProductBook
      summary: Get product book
      description: Retrieves the order book for a specific product. Returns bids and asks at various price levels. This endpoint is publicly accessible.
      tags:
      - Market Data
      security: []
      parameters:
      - name: product_id
        in: query
        required: true
        description: Product ID to get the order book for
        schema:
          type: string
      - $ref: '#/components/parameters/LimitParam'
      responses:
        '200':
          description: Successfully retrieved product book
          content:
            application/json:
              schema:
                type: object
                properties:
                  pricebook:
                    $ref: '#/components/schemas/PriceBook'
components:
  schemas:
    PriceBook:
      type: object
      description: Order book price levels
      properties:
        product_id:
          type: string
          description: Product identifier
        bids:
          type: array
          description: Bid price levels
          items:
            type: object
            properties:
              price:
                type: string
                description: Bid price
              size:
                type: string
                description: Size at this price level
        asks:
          type: array
          description: Ask price levels
          items:
            type: object
            properties:
              price:
                type: string
                description: Ask price
              size:
                type: string
                description: Size at this price level
        time:
          type: string
          format: date-time
          description: Timestamp of the price book
  parameters:
    LimitParam:
      name: limit
      in: query
      description: Maximum number of results to return
      schema:
        type: integer
        minimum: 1
        maximum: 250
        default: 49
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: CB-ACCESS-KEY
      description: Coinbase API key authentication using HMAC SHA-256 signatures. Requires CB-ACCESS-KEY, CB-ACCESS-SIGN, and CB-ACCESS-TIMESTAMP headers.
externalDocs:
  description: Coinbase Advanced Trade API Documentation
  url: https://docs.cdp.coinbase.com/coinbase-app/advanced-trade-apis/rest-api