Polymarket API

Query Polymarket prediction markets. Use for questions about prediction markets, betting odds, market prices, event probabilities, or when user asks about Polymarket data.

Security Scan

The skill is internally consistent: it is a read-only Polymarket client that queries the public Polymarket API and does not request credentials or install code.

Purpose & Capability

Name/description match the implementation: the script queries Polymarket's public API endpoints (/markets, /events) and formats market data. No unrelated capabilities, binaries, or credentials are requested.

Instruction Scope

SKILL.md and the script limit actions to fetching and displaying public API data from gamma-api.polymarket.com. The instructions do not read local files, environment secrets, or send data to any unexpected endpoints.

Install Mechanism

No install spec; the skill is instruction + a small Python script. No downloads or archive extraction occur. Risk from install mechanism is minimal.

Credentials

No environment variables, credentials, or config paths are required. The skill only needs network access to the public Polymarket API, which aligns with its purpose.

Persistence & Privilege

always is false and the skill does not request persistent privileges or modify other skills or system settings. Autonomous invocation is allowed (platform default) but not by itself a concern here.

Assessment

This skill is a lightweight, read-only Polymarket client that makes HTTPS requests to gamma-api.polymarket.com and prints results. It does not request credentials or write files. Before installing, confirm you trust outbound network access to that domain (the script will perform live API calls). Also note this tool relies on the public API responses — results reflect Polymarket data and may change; there are no hidden endpoints or exfiltration behaviors in the provided code.

Polymarket

Query prediction market data from Polymarket's public API (no auth required).

Quick Start

# Top markets by 24h volume
python3 scripts/polymarket.py --top

# Search markets
python3 scripts/polymarket.py --search "trump"

# Get specific market by slug
python3 scripts/polymarket.py --slug "will-trump-win-the-2024-election"

# List events (grouped markets)
python3 scripts/polymarket.py --events

Script Location

skills/polymarket/scripts/polymarket.py

API Endpoints

The script uses gamma-api.polymarket.com:

• /markets - Individual markets with prices, volumes
• /events - Event groups containing related markets

Output Format

Markets show: question, Yes/No prices (as percentages), 24h volume, total volume.

Interpreting Prices

• outcomePrices are 0-1 representing probability
• Price of 0.65 for "Yes" = market thinks 65% chance of Yes
• Higher volume = more liquid, more reliable signal