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Polymarket

Polymarket CLOB Market Data API

Public CLOB market data.

Documentation Provider Profile APIs.io OpenAPI GitHub

Polymarket CLOB Market Data API is one of 11 APIs that Polymarket publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include CLOB Market Data. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 2 operations across 2 paths. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against 3 base URLs: https://clob.polymarket.com, https://clob-staging.polymarket.com, https://gamma-api.polymarket.com.

2 operations 2 paths 0 schemas 2 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://clob.polymarket.com
Authentication
API Key
Contact
Polymarket Documentation
Resource Areas
1

Authentication & Security 1

Polymarket CLOB Market Data API declares 1 security scheme for authenticating requests. An API key is passed in the header as POLY_API_KEY (polyApiSignature).

  • polyApiSignature — Polymarket CLOB authenticated trading endpoints require five headers: POLYAPIKEY, POLYADDRESS, POLYSIGNATURE, POLYPASSPHRASE, POLYTIMESTAMP. Only POLYAPIKEY is…

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 2 GET. Each is listed below with its method, path, parameters, and response codes.

CLOB Market Data 2

Public CLOB market data.

GET
/midpoint
Get midpoint price for a market
getMidpointPrice 1 param → 200
GET
/time
Get server time
getServerTime → 200

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

polymarket-clob-market-data-api-openapi.yml Raw ↑

Other APIs Polymarket publishes across the network.

Polymarket CLOB API
AE Profile APIs.io
Polymarket Gamma API
AE Profile APIs.io
Polymarket Data API
AE Profile APIs.io
Polymarket WebSocket
AE Profile APIs.io
py-clob-client (Python SDK)
AE Profile APIs.io
clob-client (TypeScript SDK)
AE Profile APIs.io
clob-client (Rust SDK)
AE Profile APIs.io
Polymarket CLOB Trade API
AE Profile APIs.io
Polymarket Gamma Events API
AE Profile APIs.io
Polymarket Gamma Markets API
AE Profile APIs.io
#CLOB Market Data
← Back to P APIs
API Details
ID
polymarket:polymarket-clob-market-data-api
Base URL
https://clob.polymarket.com
Docs
https://docs.polymarket.com/
Provider
Polymarket
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This is an independent, third-party profile of Polymarket CLOB Market Data API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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