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Connect Claude

This guide is for Claude on claude.ai (Settings → Connectors → Add custom connector). For Claude Desktop and other MCP clients, use the same rules as in Setup & authentication: endpoint https://www.fyvel.io/mcp and a bearer token.
Create an MCP credential in Fyvel first and copy the token. It is shown only once and starts with fyv_mcp_. It is not the API key for Excel or Google Sheets.

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Add the connector

In Claude, open Settings → Connectors → Add custom connector and fill in the fields as in the screenshot (red markers 1–4):
Claude add custom connector dialog with name fyvel, URL, no login, and Authorization header

Custom connector for Fyvel in Claude

Claude may show Sign in now as detected when it probes the server, because unauthenticated access is rejected. Ignore OAuth and use No login plus the Authorization header as above.
Click Add. The connector should appear in your connector list.

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First test

  1. Start a chat with the fyvel connector enabled.
  2. Ask Claude to call list_companies.
  3. Pick the right companyUuid for further tools — see Companies & scoping.

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Rotate the token

When you create a new MCP credential in Fyvel, existing MCP tokens for that organisation are revoked. Edit the connector and update the Authorization header with the new Bearer value.

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