# ViaFrei

> Motorways, rail and public transport, parking and charging from open data — answered by your AI assistant, not by one more app. Live, with a source at every figure, no tracking before you agree. ViaFrei is an MCP server: no key, no account — your assistant connects to https://mcp.viafrei.de/mcp.

Deutsch: Eine Adresse, kein Konto, kein Schlüssel. Fügen Sie ViaFrei einmal als Connector hinzu – danach fragen Sie einfach. Adresse: https://mcp.viafrei.de/mcp

Status: ViaFrei is in beta: answers and coverage can change, and the AI can make mistakes. Please check important details with the source named.

Data: from official and open sources (60 credit lines today). Every answer carries its source and its licence; the credit lines are listed in https://viafrei.de/en/connect#sources and in https://viafrei.de/llms-full.txt.

## Connect

- Endpoint (Streamable HTTP): https://mcp.viafrei.de/mcp — Any client that speaks Streamable HTTP connects to the address above – no headers, no key.
- Legacy HTTP+SSE: https://mcp.viafrei.de/sse — Older clients without Streamable HTTP use the SSE address.
- claude.ai (web): Settings → Connectors → “Add custom connector” → paste the address above → save.
- Claude Desktop: Settings → Connectors → “Add custom connector” → paste the address.
- ChatGPT: Settings → Connectors (developer mode) → new connector → enter the address as an MCP server over HTTP.
- Claude Code: `claude mcp add --transport http viafrei https://mcp.viafrei.de/mcp`
- stdio-only clients: `npx -y viafrei` — The bridge from the public npm package starts a local stdio server that forwards to the address above.

## Pages

- [ViaFrei — Is the road clear? Germany's transport data in your AI assistant](https://viafrei.de/en): Motorways, rail and public transport, parking and charging from open data — answered by your AI assistant, not by one more app. Live, with a source at every figure, no tracking before you agree.
- [Connect ViaFrei to your assistant — ViaFrei](https://viafrei.de/en/connect): One address, no account, no key. Add ViaFrei once as a connector – then just ask.
- [ViaFrei for developers — ViaFrei](https://viafrei.de/en/developers): An MCP server over Streamable HTTP, open data from Germany, every answer with its source. This is what it does today – read from the server itself, not copied.
- [ViaFrei for businesses — ViaFrei](https://viafrei.de/en/business): Open mobility data from all of Germany, cleanly merged and always with its source – as one endpoint your systems and your assistants can ask.
- [Filling stations by state – a selection with prices — ViaFrei](https://viafrei.de/en/fuel): Up to three filling stations per state, cheapest Super E10 first. Chosen from the stations we observe – so not necessarily the cheapest in the state. Every price is shown with the time we observed it. Information for consumers, not a list of every filling station.
- [Imprint — ViaFrei](https://viafrei.de/en/impressum)
- [Privacy — ViaFrei](https://viafrei.de/en/datenschutz)
- [Deutsch](https://viafrei.de/de): ViaFrei — Ist die Strecke frei? Verkehrsdaten für Deutschland in Ihrem KI-Assistenten

## Code and listings

- [Public repository (bridge, docs, issues)](https://github.com/mavrovde/viafrei-mcp)
- [Wiki](https://github.com/mavrovde/viafrei-mcp/wiki)
- [npm package `viafrei`](https://www.npmjs.com/package/viafrei)
- [Smithery](https://smithery.ai/servers/viafrei/viafrei)
- [Glama](https://glama.ai/mcp/servers/mavrovde/viafrei-mcp)
- [MCP server card](https://viafrei.de/.well-known/mcp/server-card.json)

## Optional

- [Full version: every tool with its one-line description, prompts, resources and sources](https://viafrei.de/llms-full.txt)