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polymarket

Query Polymarket prediction markets for prices, orderbooks, and price history via public REST APIs.

Updated Jun 30, 2026
Search Tags:#api#market data#orderbook#polymarket#odds#price history#prediction markets
One-click install
npx skills add https://github.com/zhoulingxiao1216/testworkspace --skill polymarket-zhoulingxiao1216
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: polymarket
Source: https://github.com/zhoulingxiao1216/testworkspace/tree/main/all_Skills/research/polymarket
Command: npx skills add https://github.com/zhoulingxiao1216/testworkspace --skill polymarket-zhoulingxiao1216

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve? Finding current prediction market odds and event probabilities requires manually browsing Polymarket or writing custom API integration code. This Skill provides direct read-only access to Polymarket's public APIs so you can search markets, check live prices, inspect orderbooks, and review price history without authentication. ## Core Features & Use Cases - Market Search and Discovery: Search events and markets by keyword, or list trending events sorted by volume using the Gamma API. - Real-Time Pricing and Orderbooks: Fetch current prices, midpoints, spreads, and full orderbook depth from the CLOB API using clobTokenIds. - Price History and Trades: Retrieve historical price charts by conditionId and recent trade data from the Data API. - Use Case: A user asks "What are the odds of a rate cut this year?" The Skill searches Polymarket, parses the double-encoded outcomePrices field, and returns "Yes: 65.2%, No: 34.8%" with trading volume. ## Quick Start Ask the assistant to search Polymarket for current odds on a topic, for example: "What are the current Polymarket odds on Bitcoin reaching $100k?"

Frequently Asked Questions about polymarket

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I check Polymarket odds for an event?▼

Search Polymarket using the Gamma API public-search endpoint with your query, then read the outcomePrices field from the returned markets. Prices map directly to probabilities, so 0.65 means the market implies a 65% chance.

How to get Polymarket price history for a market?▼

Use the CLOB API prices-history endpoint with the market's conditionId, an interval such as 1d, 1w, or all, and a fidelity value for data point count. The response returns Unix timestamps paired with price values.

Does the Polymarket API require authentication or an API key?▼

No authentication is needed for read-only data. All Gamma, CLOB, and Data API endpoints used here are public GET requests. Only placing trades requires wallet-based EIP-712 signatures, which this Skill does not support.

Why does Polymarket outcomePrices return a string instead of an array?▼

The Gamma API double-encodes fields like outcomePrices, outcomes, and clobTokenIds as JSON strings inside the JSON response. Parse them with json.loads() in Python to get the actual array values.

Can I place trades on Polymarket through this API?▼

No, this Skill is read-only and cannot place trades. Trading requires wallet-based crypto authentication with EIP-712 signatures, and geographic restrictions apply to trading even though market data is globally accessible.

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