MCP.Market

Polymarket Kalshi Trading MCP server

online · 100% uptime
by oddsrail.app·app.oddsrail/polymarket-kalshi-trading·v0.19.0·1 stars
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Cross-venue prediction markets for AI agents: Polymarket + Kalshi, costed and attributed

A98/100grade A
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Safety scan
A98/100

full report

Adoption
Growing

1 stars217 downloads/wk

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Polymarket Kalshi Trading tools

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Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

no findings
  • Code scan16 source files scanned25/25
  • Live reliabilityremote reachable in 593ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityOAuth resource metadata advertised on 40115/15
  • Maintenancelast push 7 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10
Overall 98/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Polymarket Kalshi Trading compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
98/100
higher than 99% of 48,243 servers
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
612 ms
faster than 26% of 30,027 servers
GitHub stars
1
more than 65% of 28,706 servers
Downloads a week
217
more than 76% of 12,306 servers with a package

Release history: 2 versions in the registry since 2026-09-11, latest 2026-09-24, typically one every 13 days.

Install Polymarket Kalshi Trading in Claude Code, Cursor or VS Code

claude mcp add --transport http polymarket-kalshi-trading https://mcp.oddsrail.app/mcp
Add to Cursor

What the publisher says

From the Polymarket Kalshi Trading repository's README, as published. We do not edit it. Read it on GitHub

oddsrail

<!-- mcp-name: app.oddsrail/polymarket-kalshi-trading -->

The rail AI agents use to trade prediction markets.

An MCP server that gives any agent (Claude Code, Claude Desktop, or anything MCP-compatible) prediction-market access across Polymarket and Kalshi: market search, orderbooks, price history, positions, and order routing, with on-chain builder-code attribution on Polymarket, plus two premium signal tools (in-play overshoot/fade detection, resolution dispute-risk).

Free to use, and free of fees. oddsrail ships with a project builder code registered at 0 bps, so orders routed through it are attributed without adding a single basis point to anyone's trade. The project's income is a share of Polymarket's weekly builder reward pool, paid by Polymarket's own program, not by you. Running your own builder profile instead is one environment variable (ODDSRAILBUILDERCODE), and server_info always tells you which code is in use. No fee tiers, no paywalled tools, no account required.

How oddsrail compares

Verified against each alternative directly (their repos, live endpoints, and registry entries, September 2026), not from their marketing:

Verified 2026-09-02 from each project's own README or docs (pmxt: github.com/pmxt-dev/pmxt; Simmer: docs.simmer.markets; agent-skills: github.com/Polymarket/agent-skills). "Not documented" means exactly that, not "absent". Re-check before quoting; these projects move.

The wedge, in one line: pmxt is the reference for trading everywhere; Simmer is the reference for an agent economy with a sandbox and a reputation layer; oddsrail is the reference for trading correctly, non-custodially, with attribution you own.

Where the others are honestly ahead: pmxt trades three venues to our two and covers a dozen more for data, with hosted convenience and a community many times ours. Simmer has a virtual-balance sandbox, stop-loss and take-profit rails we do not have, a public reasoning/reputation layer, and a strategy-skills marketplace. Polymarket's agent-skills is the venue's own documentation and covers bridging and deposits, which oddsrail does not.

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Polymarket Kalshi Trading: common questions

Is Polymarket Kalshi Trading MCP server safe?
Yes, by our scan: it is graded A (98/100). Read the Polymarket Kalshi Trading safety report
How do I install Polymarket Kalshi Trading?
It runs remotely at mcp.oddsrail.app. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Polymarket Kalshi Trading need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is Polymarket Kalshi Trading maintained?
The last commit was 29 days ago (2026-10-07). The latest release is v0.19.0.
Is Polymarket Kalshi Trading up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Polymarket Kalshi Trading?
Servers from other publishers that do the same job: CCXT MCP server.
How does Polymarket Kalshi Trading compare with other MCP servers?
safety score 98/100 (higher than 99% of 48,243 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 612 ms (faster than 26% of 30,027 servers). Full comparison.

Alternatives to Polymarket Kalshi Trading

Same job from other publishers: the closest match first, then the best rated.

  • CCXT
    Official CCXT MCP server - Market data and trading across 100+ exchanges and prediction markets
    A