polymarket

Query Polymarket prediction market data via public REST APIs.

1|Updated May 12, 2026

Search Tags:#analytics #api #trading #market-data #prediction-markets #polymarket

Ready to run

npx skills add https://github.com/projectedanx/hermes-agent --skill polymarket-projectedanx

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: polymarket
Source: https://github.com/projectedanx/hermes-agent/tree/main/skills/research/polymarket
Command: npx skills add https://github.com/projectedanx/hermes-agent --skill polymarket-projectedanx

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This skill removes the friction of manually navigating prediction market platforms by providing direct, programmatic access to real-time odds, orderbooks, and historical market data.

Core Features & Use Cases

Market Discovery: Search for specific events or browse trending prediction markets by volume.
Data Analysis: Retrieve granular orderbook data, midpoint prices, and historical price trends for any market condition.
Use Case: A user wants to track the probability of a specific political outcome over the last month; this skill fetches the historical price data and visualizes the trend directly in the chat.

Quick Start

Use the polymarket skill to search for markets related to the upcoming presidential election and display their current Yes/No probabilities.

Frequently Asked Questions about polymarket

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

FAQPage Schema

How do I retrieve real-time prediction market data for specific events?▼

Yes, you can retrieve historical price trends for binary outcome probabilities by querying public REST APIs, fetching historical price data and visualizing probability trends directly in your chat interface.

How do I access orderbook depth and midpoint prices for prediction markets?▼

You access orderbook depth and midpoint prices by making standard HTTP requests to public REST APIs, parsing the JSON-encoded market data to monitor real-time binary outcome probabilities and market volume across event categories.

Do I need any special API keys or dependencies to fetch Polymarket data?▼

No special API keys or external dependencies are required. You only need standard HTTP request handling capabilities to query public REST APIs and parse the JSON-encoded market data, including double-encoded token fields.

What is the best way to monitor trending prediction markets by volume?▼

The best way to monitor trending prediction markets by volume is programmatically querying public REST APIs to discover events, retrieving real-time market volume data and binary outcome probabilities without manual platform navigation.

Why does prediction market data retrieval require parsing double-encoded token fields?▼

Double-encoded token fields are a structural feature of the JSON-encoded market data returned by the public REST APIs, requiring standard HTTP request handling to accurately parse the prediction market information and orderbook depth.