Polymarket MCP
Polymarket prediction markets MCP server enabling AI agents to query Polymarket — the popular blockchain-based prediction market platform. Enables reading market prices (probability estimates), querying active markets by topic, monitoring specific predictions, and integrating crowd wisdom from prediction markets into AI forecasting and decision-support workflows.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
HTTPS. No credentials. Read-only market data. No financial transactions. Jurisdiction compliance is user's responsibility.
⚡ Reliability
Best When
A researcher or analyst needs crowd-derived probability estimates on future events — Polymarket's liquid markets provide real-money probability signals useful for forecasting and research.
Avoid When
You're in the US (Polymarket is restricted for US persons) or need trading functionality rather than market data queries.
Use Cases
- • Querying probability estimates on political and economic events from forecasting agents
- • Monitoring prediction market prices for research and analysis from intelligence agents
- • Integrating market-derived probabilities into AI reasoning from decision-support agents
- • Tracking prediction market accuracy for calibration from research agents
- • Market research on Polymarket betting patterns from analysis agents
Not For
- • Teams in jurisdictions where prediction markets are illegal (Polymarket restricted in US for US persons)
- • Automated trading on Polymarket without proper authorization (requires wallet integration)
- • Investment advice — prediction markets are probabilistic estimates, not guaranteed forecasts
Interface
Authentication
No authentication required for reading market data — Polymarket's CLOB API is publicly accessible. Wallet authentication needed for trading (not covered by this read-only MCP).
Pricing
Market data reading is free. This MCP is read-only. Actual trading on Polymarket involves real money and is subject to jurisdiction restrictions.
Agent Metadata
Known Gotchas
- ⚠ Polymarket is restricted for US persons — verify jurisdiction compliance before using
- ⚠ Market prices are dynamic and change constantly — treat as real-time probabilistic data
- ⚠ Blockchain-based markets have on-chain data — understand the difference between CLOB API and chain data
- ⚠ Community MCP — verify API compatibility with current Polymarket API version
- ⚠ Prediction market data is useful for probability estimation but not investment advice
Alternatives
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Scores are editorial opinions as of 2026-03-07.