PolymarketDocumentation/docs/api-reference/market-data/get-spread.md

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Get spread

Retrieves the spread for a specific token ID. The spread is the difference between the best ask and best bid prices.

OpenAPI

openapi: 3.1.0
info:
  title: Polymarket CLOB API
  description: Polymarket CLOB API Reference
  license:
    name: MIT
    identifier: MIT
  version: 1.0.0
servers:
  - url: https://clob.polymarket.com
    description: Production CLOB API
  - url: https://clob-staging.polymarket.com
    description: Staging CLOB API
security: []
tags:
  - name: Trade
    description: Trade endpoints
  - name: Markets
    description: Market data endpoints
  - name: Account
    description: Account and authentication endpoints
  - name: Notifications
    description: User notification endpoints
  - name: Rewards
    description: Rewards and earnings endpoints
  - name: Rebates
    description: Maker rebate endpoints
paths:
  /spread:
    get:
      tags:
        - Market Data
      summary: Get spread
      description: |
        Retrieves the spread for a specific token ID.
        The spread is the difference between the best ask and best bid prices.
      operationId: getSpread
      parameters:
        - name: token_id
          in: query
          description: Token ID (asset ID)
          required: true
          schema:
            type: string
          example: 0xabc123def456...
      responses:
        '200':
          description: Successfully retrieved spread
          content:
            application/json:
              schema:
                type: object
                required:
                  - spread
                properties:
                  spread:
                    type: string
                    description: Spread as a string
                    example: '0.02'
        '400':
          description: Bad request - Invalid token id
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error: Invalid token id
        '404':
          description: Not found - No orderbook exists for the requested token id
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error: No orderbook exists for the requested token id
      security: []
components:
  schemas:
    ErrorResponse:
      type: object
      required:
        - error
      properties:
        error:
          type: string
          description: Error message

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