Web3 Polymarket

This is a comprehensive integration for building on Polymarket's prediction markets on Polygon. It covers the full stack: L1/L2 authentication with EIP-712 and HMAC signatures, order placement with all the standard types (GTC, GTD, FOK, FAK), real-time WebSocket feeds for orderbook and user events, and CTF token operations for splitting and merging positions. The skill includes contract addresses, both TypeScript and Python SDK examples, and detailed references for gasless transactions through their relayer. If you're building an AI trading agent or a custom prediction market interface, this gets you up and running without hunting through docs. The negative risk market support is a nice touch for multi-outcome events.

skills.sh installs: 594
GitHub stars: 199
last updated: Jun 3, 2026

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Install

$ npx -y skills add polymarket/agent-skills --skill web3-polymarket --agent claude-code

Installs into .claude/skills of the current project.

Files

Polymarket Skill

When to use this skill

Use this skill when the user asks about or needs to build:

Polymarket API authentication (L1/L2, API keys, HMAC signing)
Placing or managing orders (limit, market, GTC, GTD, FOK, FAK, batch, cancel)
Reading orderbook data (prices, spreads, midpoints, depth)
Market data fetching (events, markets, by slug, by tag, pagination)
WebSocket subscriptions (market channel, user channel, sports)
CTF operations (split, merge, redeem positions)
Negative risk markets (multi-outcome, conversion, augmented neg risk)
Bridge operations (deposits, withdrawals, multi-chain)
Gasless transactions (relayer client, order attribution)
Builder program integration (order attribution, API keys, tiers)
Polymarket SDK usage (TypeScript @polymarket/clob-client, Python py-clob-client)