Polymarket · Authentication Profile

Polymarket Authentication

Authentication

Polymarket secures its APIs with apiKey across 1 declared security scheme, as derived from its OpenAPI definitions.

Prediction MarketsDeFiPolygonOrder BookCryptoMarkets
Methods: apiKey Schemes: 1 OAuth flows: API key in: header

Security Schemes

polyApiSignature apiKey
· in: header (POLY_API_KEY)

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/polymarket-openapi.yml
summary:
  types:
  - apiKey
  api_key_in:
  - header
schemes:
- name: polyApiSignature
  type: apiKey
  in: header
  parameter: POLY_API_KEY
  description: |-
    Polymarket CLOB authenticated trading endpoints require five
    headers: POLY_API_KEY, POLY_ADDRESS, POLY_SIGNATURE,
    POLY_PASSPHRASE, POLY_TIMESTAMP. Only POLY_API_KEY is modelled
    here because OpenAPI security schemes describe a single header
    each; in practice, all five must be sent on each request.
  sources:
  - openapi/polymarket-openapi.yml