PolymarketSAFE
MCP Server for PolyMarket API
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
[](https://smithery.ai/server/polymarket_mcp)
A Model Context Protocol (MCP) server that provides access to prediction market data through the PolyMarket API. This server implements a standardized interface for retrieving market information, prices, and historical data from prediction markets.
[](https://mseep.ai/app/berlinbra-polymarket-mcp)
Features
- Real-time prediction market data with current prices and probabilities
- Detailed market information including categories, resolution dates, and descriptions
- Historical price and volume data with customizable timeframes (1d, 7d, 30d, all)
- Built-in error handling and rate limit management
- Clean data formatting for easy consumption
Installation
Installing via Smithery
To install PolyMarket Predictions for Claude Desktop automatically via Smithery:
npx -y @smithery/cli install polymarket_mcp --client claude
Claude Desktop
- On MacOS:
~/Library/Application\ Support/Claude/claude_desktop_config.json - On Windows:
%APPDATA%/Claude/claude_desktop_config.json
Development/Unpublished Servers Configuration
"mcpServers": {
"polymarket-mcp": {
"command": "uv",
"args": [
"--directory",
"/Users/{INSERT_USER}/YOUR/PATH/TO/polymarket-mcp",
"run",
"polymarket-mcp" //or src/polymarket_mcp/server.py
],
"env": {
"KEY": "",
"FUNDER": ""
}
}
}50527dd46c3bOBSERVED · 2026-10-07Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add polymarket_mcp --env KEY=${KEY} -- uvx polymarket_mcp{
"mcpServers": {
"polymarket_mcp": {
"command": "uvx",
"args": [
"polymarket_mcp"
],
"env": {
"KEY": "${KEY}"
}
}
}
}Exposed tools (4)
4 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
get-market-history | read | Get historical price and volume data for a market |
get-market-info | read | Get detailed information about a specific prediction market |
get-market-prices | read | Get current prices and trading information for a market |
list-markets | read | Get a list of prediction markets with optional filters |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- none-observed
- Shell
- none-observed
- Dependencies
- pinned
- Secrets in source
- none-found
Findings (0)
No findings outside the package's declared scope.
Gates applied: no_behavioural_pass.
50527dd46c3bfull audit observations/trust-audit/mcp-server/berlinbra__polymarket.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-07 | 50527dd46c3b | SAFE | B | 89 | first audit |
Questions
What is the Polymarket MCP server?
MCP Server for PolyMarket API
What tools does Polymarket expose?
4 in total: 4 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is Polymarket safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does Polymarket need?
It reads KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does Polymarket run?
It speaks stdio, so it runs as a local process your client starts. It is published on PyPI as polymarket_mcp.
How current is this page?
The grade is for one exact copy of the source (50527dd46c3b), read on 2026-10-07. The repository is watched and re-audited when it changes.