How to integrate SNCF MCP with Hermes

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows. This guide explains the easiest and most robust way to connect your SNCF account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

SNCF logoSNCF
Api Key

SNCF is France's national railway service for passenger train journeys, stations, schedules, and live travel information. It gives developers reliable rail data for route planning, station lookup, and service-status checks.

9 Tools

Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your SNCF account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate SNCF with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating SNCF with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to SNCF

Ask your agent to connect to SNCF, or simply request any SNCF-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new SNCF connection.


Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to SNCF or request any SNCF-related task. It will prompt you to authenticate and authorize access.

5. Done!

What is the SNCF MCP server, and what's possible with it?

The SNCF MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your SNCF account. It provides structured and secure access to SNCF passenger information, so your agent can plan journeys, find stations, check schedules, monitor service disruptions, and explore the transport network on your behalf.

  • Journey planning: Have your agent plan train journeys between stations or locations for a chosen departure or arrival time.
  • Station and place discovery: Let the agent search for stations, addresses, administrative areas, and points of interest by name or find nearby stops from a location.
  • Live station boards: Direct your agent to check upcoming departures or arrivals, including scheduled times, real-time updates, and disruption details.
  • Service status monitoring: Instruct your agent to review current disruptions and identify the affected lines, stations, or train journeys within a selected time window.
  • Transport network exploration: Have your agent browse or search SNCF networks, lines, routes, stations, transport modes, operators, and train journeys, and check the available coverage period.

Way Forward

With SNCF connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

TOOLS

Supported Tools

Every SNCF action and event your agent gets out of the box.

Find Nearby Places

Find SNCF stations, stops, or points of interest near a geographic coordinate.

Get Service Status

Get SNCF network service disruptions and affected lines, stations, or vehicle journeys for a time window.

Get Station Board

Get upcoming departures or arrivals for an SNCF station, including scheduled and realtime times and disruption context.

Get Transport Object

Get details for one SNCF network, line, route, station, stop, mode, company, or vehicle journey by canonical ID.

Get SNCF Coverage

Get the SNCF transport-data coverage region and its current production horizon.

List Transport Objects

Browse one supported SNCF transport-object collection, such as lines, networks, routes, stations, or vehicle journeys.

Plan Journey

Plan SNCF train journeys between two station/place IDs or coordinates for a requested departure or arrival time.

Search Places

Find SNCF stations, addresses, administrative areas, or points of interest by name and return IDs usable for journeys and station boards.

Search Transport Objects

Search SNCF networks, modes, lines, routes, stations, or stop points by name and return canonical transport-object IDs.

FAQ

Frequently asked questions

With a standalone SNCF MCP server, the agents and LLMs can only access a fixed set of SNCF tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from SNCF and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right SNCF tools.

Yes, absolutely. You can configure which SNCF scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your SNCF data and credentials are handled as safely as possible.

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