GET/balance-allowance

Get balance and allowance

Retrieves the balance and allowances for the authenticated user's address. The address is determined from the API key authentication and signature type.

Base URL: https://clob.polymarket.com
Auth: L2 API credentials (key, secret, passphrase)POLY_API_KEY, POLY_ADDRESS, POLY_SIGNATURE, POLY_PASSPHRASE, POLY_TIMESTAMP
Rate limit: 9,000 req / 10s (900 per second)
Limit applies to: CLOB API general

Parameters

Name	In	Type	Required	Description
asset_type	query	string	yes	Type of asset
token_id	query	string	no	Token ID (asset ID). Defaults to "-1" for ERC20 collateral.
signature_type	query	integer	no	Signature type for address derivation (0=EOA, 1=POLY_PROXY, 2=POLY_GNOSIS_SAFE)

Example

curl -X GET "https://clob.polymarket.com/balance-allowance?asset_type=<asset_type>" \
  -H "POLY_API_KEY: $POLY_API_KEY" \
  -H "POLY_ADDRESS: $POLY_ADDRESS" \
  -H "POLY_SIGNATURE: $POLY_SIGNATURE" \
  -H "POLY_PASSPHRASE: $POLY_PASSPHRASE" \
  -H "POLY_TIMESTAMP: $POLY_TIMESTAMP"

L2 requests are signed with HMAC-SHA256 using your API secret, and the timestamp is part of the signature, so keep the machine's clock accurate. A missing credential or a stale signature both come back as Unauthorized/Invalid api key. The Python SDK signs for you.

Response fields

Field	Type	Description
balance	string	Balance amount in fixed-math with 6 decimals
allowances	object	Map of spender addresses to allowance amounts

Responses

Status	Meaning
200	Successfully retrieved balance and allowances
400	Bad request - Invalid parameters
401	Unauthorized - Invalid API key or authentication failed
500	Internal server error

Errors this endpoint returns

Related endpoints

PUT /balance-allowance CLOB API
GET /balance-allowance/update 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.