World Cup Winner
Yes 13%
No 87%
Vol. $2510.6M
Polymarket is geoblocked in the UK. UK traders access equivalent CLOB liquidity via PolyGram. 0% fees. Optional KYC. USDC on Polygon.
Polymarket CLOB API Overview
Polymarket's CLOB API is documented at clob.polymarket.com. It supports REST endpoints for order placement, cancellation, order book queries, and market data. Authentication uses EIP-712 signatures from an Ethereum wallet. Rate limits are 10 requests/second for authenticated endpoints, 1 request/second for public endpoints.
API Authentication
The CLOB API requires a derived API key generated from an Ethereum wallet signature. Using the py-clob-client Python library: client = ClobClient("https://clob.polymarket.com", key=private_key, chain_id=137). UK developers building bots against Polymarket's API are not geoblocked on API calls — only the web front-end is geoblocked. However, Polymarket's Terms of Service restrict access to authorised jurisdictions.
Building a Market-Making Bot
A basic market-making bot on Polymarket's CLOB: (1) subscribe to the WebSocket feed for real-time order book updates, (2) maintain a position in YES and NO shares, (3) post limit orders at your target spread around the mid-price, (4) cancel and re-post as prices move. The CLOB supports GTC (Good Till Cancelled), IOC (Immediate or Cancel), and FOK (Fill or Kill) order types.
PolyGram API for UK Developers
PolyGram exposes equivalent CLOB endpoints for UK-based algorithmic traders. Connect using the same EIP-712 auth pattern. PolyGram's order book mirrors Polymarket's, so strategies developed on Polymarket's API can be adapted to PolyGram with minimal changes. Contact PolyGram via polygram.ink for API access credentials.
Trade Prediction Markets from the UK
PolyGram mirrors Polymarket's CLOB. Access all markets, same prices, 0% fees.
Open PolyGram → View FAQFrequently Asked Questions
Is Polymarket legal in the UK?
Polymarket itself operates in a legal grey area in the UK. Prediction markets settled in cryptocurrency (USDC) are not straightforwardly classified as "gambling" under the Gambling Act 2005, which requires cash prizes to trigger regulation. No UK authority has taken enforcement action against Polymarket. However, Polymarket voluntarily geoblocks UK IP addresses. PolyGram mirrors Polymarket's CLOB liquidity and is accessible to UK users.
Why is Polymarket blocked in the UK?
Polymarket geoblocks UK users as a precautionary compliance measure, not because the UK has explicitly banned it. The Gambling Commission has not issued guidance specifically covering USDC-settled prediction markets. PolyGram was built to give UK traders access to the same Polymarket CLOB order book without the IP restriction.
Do I need a VPN to use Polymarket from the UK?
Using a VPN to circumvent Polymarket's geoblock violates Polymarket's Terms of Service and could result in your account being restricted. A better option is PolyGram, which legally mirrors Polymarket's CLOB liquidity and is fully accessible to UK users without a VPN.
What currency do prediction markets use?
Polymarket and PolyGram use USDC (USD Coin), a US-dollar-pegged stablecoin on the Polygon blockchain. Each contract share is worth between $0.00 and $1.00 USDC, with the final value settling at $1.00 (YES wins) or $0.00 (NO wins). UK users can buy USDC on Coinbase UK, Kraken UK, or any FCA-registered crypto exchange.
Is PolyGram regulated by the FCA?
No. PolyGram is not regulated by the Financial Conduct Authority. Prediction markets are a novel category and no major prediction market platform — including Polymarket or Kalshi — holds FCA authorisation. Always trade only what you can afford to lose.
How do I fund a PolyGram account from the UK?
Purchase USDC on an FCA-registered exchange (Coinbase UK and Kraken UK are the most popular). Send USDC on the Polygon network to your PolyGram deposit address. Deposits are credited after 12 confirmations, typically within 2–3 minutes. Minimum deposit is $10 USDC.