Polymarket Odds

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's code, instructions, and requirements are consistent with its stated purpose of querying Polymarket's public API; it makes only outbound reads to the Polymarket domain and requests no credentials or unusual privileges.

Purpose & Capability

Name/description (Polymarket odds) matches the included Python script and SKILL.md which fetch market and event data from Polymarket's public API (gamma-api.polymarket.com). No unrelated services, binaries, or credentials are requested.

Instruction Scope

SKILL.md and the script limit behavior to fetching and formatting public market/event data. The runtime instructions and code do not read local files, environment variables, or send data to third parties outside the documented Polymarket API.

Install Mechanism

There is no install spec; this is instruction + a small Python script that runs with standard library modules. Nothing is downloaded or written by an installer, reducing install-time risk.

Credentials

The skill requires no environment variables, credentials, or config paths. No secrets are requested or used; network access is only to the documented Polymarket API host.

Persistence & Privilege

The skill does not request always:true, does not modify other skills or system configs, and requires no special persistence. Default autonomous invocation is allowed but is normal and expected for such a skill.

Assessment

This skill appears coherent and low-risk: it simply queries Polymarket's public API and prints results, and it does not request keys or read local files. Before installing, verify you are comfortable with the agent making outbound HTTPS requests to gamma-api.polymarket.com and review the included script if you want to confirm there is no additional behavior. If you need to restrict network access, be aware the skill requires internet access to function. If you require stronger assurance, confirm the API host exactly matches Polymarket's official domain and consider running the script locally to review its runtime output.

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