GET/fee-rate

Get fee rate

Retrieves the base fee rate for a specific token ID. The fee rate can be provided either as a query parameter or as a path parameter.

Base URL: https://clob.polymarket.com
Auth: Public, no key
Rate limit: 9,000 req / 10s (900 per second)
Limit applies to: CLOB API general

Parameters

Name	In	Type	Required	Description
token_id	query	string	yes	Token ID (asset ID)

token_id is listed as optional in Polymarket's OpenAPI spec, but the API returns 400 without it (checked 2026-10-04).

Example

curl -X GET "https://clob.polymarket.com/fee-rate?token_id=<token_id>"

Response fields

Field	Type	Description
base_fee	integer	Base fee in basis points

Responses

Status	Meaning
200	Successfully retrieved fee rate
400	Bad request - Invalid token id
404	Not found - Fee rate not found for market
500	Internal server error

Related endpoints

GET /fee-rate/{token_id} CLOB API

Polymarket's API serves current state only, so it cannot show what a market's book looked like after it resolved. PolyTest records Up/Down markets while they run and keeps the snapshots. Try it free, or read the full rate limit reference.

From Polymarket's published OpenAPI spec and rate-limit tables, synced 2026-10-04.