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josoroma
josoromaCOMMUNITY
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polymarket

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

6|Updated Jul 12, 2026
Search Tags:#rest api#market data#orderbook#polymarket#odds#price history#prediction markets
One-click install
npx skills add https://github.com/josoroma/AppLoop --skill polymarket-josoroma
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: polymarket
Source: https://github.com/josoroma/AppLoop/tree/main/.hermes/skills/research/polymarket
Command: npx skills add https://github.com/josoroma/AppLoop --skill polymarket-josoroma

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 calls. This Skill lets you search markets, read live prices, inspect orderbooks, and pull price history directly through Polymarket's public REST APIs with zero authentication. ## Core Features & Use Cases - Market Search and Discovery: Search events and markets via the Gamma API, list trending events by volume, and filter by tags, slugs, or active status. - 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 series 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 agent to search Polymarket for current odds on a topic, for example: "What are the current Polymarket odds on Bitcoin reaching $150k this year?"

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 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?▼

Call the CLOB API prices-history endpoint with the market's conditionId, an interval such as 1w or 1m, and a fidelity value for data point count. The response returns timestamped price points you can chart or analyze.

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

No. All endpoints used by this Skill across the Gamma, CLOB, and Data APIs are public read-only REST endpoints requiring zero authentication. Only placing trades would require wallet-based EIP-712 signatures, which this Skill does not support.

Can I place trades on Polymarket with this Skill?▼

No. This Skill is strictly read-only and cannot place trades. Trading requires wallet-based crypto authentication with EIP-712 signatures, which is outside its scope.

Why does Polymarket price history return empty for some markets?▼

Very new markets may have no recorded price history yet, so the prices-history endpoint returns an empty result. Check the market's creation date and try a shorter interval, or fall back to current price and orderbook data.

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