# Routeur

> Live prediction market odds from Kalshi and Polymarket side by side, the relations proven between their contracts, mispricing leads, unusual flow, and strategies measured against settled history. Read-only: nothing on Routeur places an order, and nothing here is investment advice.

Routeur reads every open market on Kalshi and global Polymarket and proves which ones imply, exclude or equal each other from each venue's structured contract terms and exact arithmetic. Nothing is inferred from a market's wording, and conflicting evidence is withheld rather than guessed.

Agents should use the MCP server or the REST API rather than scraping pages; both need a free API key.

## For agents

- [MCP server](https://api.routeur.app/mcp): Streamable HTTP, authenticated with `Authorization: Bearer <ROUTEUR_API_KEY>`. One tool per REST endpoint plus composed tools: find_opportunities, compare_venues, explain_relation, market_snapshot, search_markets.
- [Server card](https://routeur.app/.well-known/mcp.json): how to connect, in JSON.
- [AI agents & MCP](https://routeur.app/agents): how to connect from Claude, Cursor, ChatGPT and any MCP client.
- [Full text for agents](https://routeur.app/llms-full.txt): the same in depth, with the concepts needed to read the numbers.
- [Agents & MCP docs](https://docs.routeur.app/agents/overview): connection guides, tool reference and example workflows.

## API

- [REST API](https://api.routeur.app): JSON over HTTPS, same keys and limits as MCP.
- [OpenAPI description](https://api.routeur.app/v1/openapi.json): every endpoint, parameter and response schema.
- [API documentation](https://docs.routeur.app): quickstart, concepts, cookbook, webhooks.

## Site

- [Markets](https://routeur.app/markets): every listed market, searchable in plain language.
- [Insights](https://routeur.app/insights): moves, tape, flows, closing, calibration and strategies.
- [Topics](https://routeur.app/topics): markets gathered by person, team, place or subject.
- [Status](https://routeur.app/status): whether the site, API and data feeds are current.

## Limits

- Prices are asks per contract that pays $1, as exact decimal strings in USD.
- Relations are proven, never guessed; a missing relation means "not proven".
- A price gap between venues is only money when both books have size and fees leave something.
- Historical returns are before fees and are not a forecast.