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polymarket

Queries Polymarket Gamma, CLOB, and Data APIs for markets, prices, and histories without authentication.

228|35|Updated Mar 9, 2026
Search Tags:#pricing#api#history#market-data#prediction-markets#polymarket
One-click install
npx skills add https://github.com/kaminocorp/hermes-alpha --skill polymarket-kaminocorp
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: polymarket
Source: https://github.com/kaminocorp/hermes-alpha/tree/main/hermes-agent/skills/research/polymarket
Command: npx skills add https://github.com/kaminocorp/hermes-alpha --skill polymarket-kaminocorp

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

Polymarket data is scattered across multiple public endpoints. This Skill provides a unified, read-only interface to discover markets, view current prices, and retrieve price history without requiring authentication.

Core Features & Use Cases

  • Read-only access to Gamma (search, markets), CLOB (current prices, orderbooks, history), and Data APIs (trades, open interest).
  • Parse double-encoded fields like outcomePrices, outcomes, and clobTokenIds for reliable data extraction.
  • Use cases include quickly answering "what are the odds of X?", tracking market movements, and building price-history visualizations.

Quick Start

Query current odds for a market or fetch the price history for a condition.

Frequently Asked Questions about polymarket

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

FAQPage Schema
How do I get current prices and odds from Polymarket without an API key?▼

You can retrieve Polymarket current prices and odds without authentication by querying public Gamma and CLOB REST endpoints. This approach parses double-encoded fields like outcomePrices to provide clean, human-readable terminal outputs.

What is the best way to fetch Polymarket price history for a specific market?▼

The best way to fetch Polymarket price history is by querying the public CLOB API endpoints. You can retrieve historical price data for specific conditions without authentication, which is suitable for building price-history visualizations.

Why are Polymarket API fields like outcomePrices showing up as encoded strings?▼

Polymarket API fields like outcomePrices, outcomes, and clobTokenIds are often double-encoded. You must parse these double-encoded fields during extraction to ensure reliable data retrieval for downstream analysis.

Can I query Polymarket orderbooks and open interest using public endpoints?▼

Yes, you can query Polymarket orderbooks and open interest using public endpoints. Read-only access is available via the CLOB API for orderbooks and the Data API for trades and open interest without requiring authentication.

How do I search for prediction markets on Polymarket programmatically?▼

You can search for prediction markets on Polymarket programmatically by querying the public Gamma API. This read-only interface allows you to discover markets and retrieve current prices without needing authentication.

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