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Polymarket API in Python: 3 Requests, No API Key Needed

309 of 1,000Most-traded open markets that charged takers nothing

Each market's own fee fields, read on 20 September 2026

A standard-library Python script reads one Polymarket market, the order book for one outcome and the fee that market charges, in three public requests with no key. Read this way, 309 of the 1,000 most-traded open markets charged takers nothing on 20 September 2026. Three requests return one market's identity and outcome prices, the full order book for one outcome and the fee that market charges a taker, with no API key and no account. The full table is on the Polymarket fee calculator. Gamma describes a market: its question, its outcomes, the token ID behind each outcome, whether it is open and what it charges. CLOB is the exchange: it returns the bids and asks for one token at one moment.

Observed 2026-09-20.

Supporting figures

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How to cite

Vultax Research, Polymarket API in Python: 3 Requests, No API Key Needed, 2026-09-22, https://vultax.com/research/polymarket-api-python-tutorial

Published 2026-09-22. Figures are the published study; live screens move. Plain-text version · Use our data