musashi.bot · API Docs · Install Extension · Pricing
Musashi is an AI intelligence service for prediction market trading bots. It monitors 71 high-signal Twitter accounts, tracks 900+ markets across Polymarket and Kalshi, and delivers automated trading signals, arbitrage detection, and sentiment analysis via a free REST API — no authentication required.
- Trading bot developers who need a unified real-time signal and arbitrage feed across Polymarket and Kalshi
- AI agent builders integrating prediction market intelligence via REST or MCP (Claude, ChatGPT)
- Quantitative traders monitoring cross-platform price discrepancies for arbitrage opportunities
| Capability | Details |
|---|---|
| Market coverage | 900+ markets — Polymarket 500+ and Kalshi 400+ unified |
| Signal feed | 71 high-signal Twitter accounts monitored every 2 minutes |
| Arbitrage detection | Cross-platform spread data, ~15–20s polling interval |
| Sentiment classification | Bullish / bearish / neutral with confidence scores |
| API access | 7 endpoints, no auth, no rate limits during beta |
| Resource | URL |
|---|---|
| Live site | https://musashi.bot |
| API reference | https://musashi.bot/ai |
| Chrome extension | https://musashi.bot/install |
| Trading bot quickstart | https://musashi.bot/docs/trading-bot-quickstart |
| API comparison | https://musashi.bot/compare/best-prediction-market-api |
| Live arbitrage spreads | https://musashi.bot/arb |
This repo is the public website and SEO/AEO content layer. The backend and distribution components live in separate repos:
| Repo | Role |
|---|---|
| musashi-api | REST API backend — analysis pipeline, market and Twitter clients |
| musashi-mcp | MCP server exposing Musashi tools to Claude and ChatGPT |
| musashi-infra | Kalshi data ingestion, normalization, and durable storage |
| musashi-extension | Chrome extension — scans tweets and surfaces matching market overlays |
What does Musashi do? Musashi reads tweets from 71 tracked accounts, classifies sentiment, matches them to active prediction markets on Polymarket and Kalshi, and surfaces trading signals and arbitrage opportunities via a REST API. The Chrome extension surfaces this inline on Twitter.
Is it free? Yes. The API has no authentication and no rate limits during the beta period. See musashi.bot/pricing.
What markets does Musashi cover? 500+ active Polymarket markets and 400+ Kalshi markets, spanning crypto, economics, politics, finance, tech, sports, and geopolitics.
Does Musashi execute trades? No. Musashi is an intelligence layer — signals, spreads, and sentiment. Execution happens through the Polymarket CLOB API and the Kalshi API in your own bot.
How do I connect Musashi to Claude or ChatGPT?
Use musashi-mcp. The hosted MCP endpoint is https://musashi-production.up.railway.app/mcp with OAuth support for both Claude and ChatGPT.
pnpm install
pnpm dev # → http://localhost:3000Built with Next.js 16 (App Router), React 19, Tailwind CSS 4, TypeScript.
Deployed on Vercel. Production: https://musashi.bot