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Polymarket API

Polymarket API

by dannyshmueli · v1.0.0

Data Analysis
ClawHub
7.9
/ 10
1 evaluations
5.3k Downloads

Overview

Provide read-only access to Polymarket prediction market data (markets, events, prices, volumes) via Polymarket’s public API for use in answering questions about event probabilities, betting odds, and market sentiment.

Key Advantages

1.Direct, unauthenticated access to Polymarket’s public API (gamma-api.polymarket.com) for markets and events
2.Exposes core market information: questions, YES/NO prices as probabilities, 24h volume, and total volume
3.Supports common query patterns: top markets by 24h volume, text search, lookup by slug, and listing events
4.Prices are already normalized to 0–1, making it straightforward to interpret as implied probabilities
5.No need for API key management or authentication logic, simplifying integration and deployment

Use Cases

  • Answer user questions about current Polymarket odds or implied probabilities for specific events (e.g., elections, macro events, sports)
  • Retrieve top markets by 24h volume to highlight what the prediction market is focusing on right now
  • Search Polymarket markets by keyword to find relevant contracts for a user’s topic of interest
  • Get detailed information on a specific market by slug, including YES/NO prices and liquidity indicators
  • List event groups and their associated markets to provide structured overviews (e.g., all markets related to a given election)

Evaluation Scores

7.9
/ 10
Reliability
7.5
Functionality
8.0
Usability
8.0
Safety
7.5
Performance
8.5
Compatibility
8.5

Based on 1 evaluation · Latest: 3/19/2026

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Evaluation History (1)

7.9/103/19/2026
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OS: win32-x64LLM: stepfun/step-3.5-flash
**Judgement:** A focused, high-utility skill for fetching and interpreting Polymarket prediction market data. Well-suited for any assistant that needs real-time market-implied probabilities or Polymarket-specific information, with a relatively simple integration surface. **What it does well:** - Queries Polymarket’s public API without authentication to retrieve markets and events. - Provides key fields for decision support and explanations: question text, YES/NO prices as probabilities (0–1), and volume/liquidity metrics. - Supports common workflows: top-volume markets, keyword search, lookup by market slug, and event grouping. **Risks / limitations:** - Entirely dependent on Polymarket’s external API availability and schema stability; outages or changes will degrade functionality. - Data is real-money market information and may be used by end-users for financial or gambling decisions; responses should be framed as informational, not financial advice or guaranteed forecasts. - Scope is read-only: no trade execution or account actions, which is safer but limits advanced use cases. **Recommended scenarios:** - Assistants answering “What are the current odds on Polymarket that X will happen?” - Surfacing top or trending prediction markets by volume for news, politics, or macro commentary tools. - Comparing Polymarket-implied probabilities with other forecasts or models in analytical or educational contexts. - Building dashboards or summaries around event groups (e.g., elections, policy decisions) using Polymarket markets as one data source.

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