PreReason

Remote (streamable-http)

https://api.prereason.com/api/mcp Reachable (checked 2026-09-24)

Claude Code:

claude mcp add --transport http mcp https://api.prereason.com/api/mcp --header "X-API-Key: <YOUR_VALUE>"

Or add to your MCP client config:

{
  "mcpServers": {
    "mcp": {
      "url": "https://api.prereason.com/api/mcp",
      "headers": {
        "X-API-Key": "<YOUR_VALUE>"
      }
    }
  }
}

• X-API-Key secret — PreReason API key, pasted as is with no prefix. Optional: without it the catalogue tools work, and the request_access tool gets a free key from inside the session (a person approves one link).

Package (npm 0.4.0)

npx -y @prereason/[email protected]

Or add to your MCP client config:

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@prereason/[email protected]"
      ],
      "env": {
        "PREREASON_API_KEY": "<YOUR_VALUE>",
        "PREREASON_CLIENT": "<YOUR_VALUE>"
      }
    }
  }
}

• PREREASON_API_KEY secret — PreReason API key (starts with pr_live_). Optional: without it the bridge asks for access from inside the session and prints one link for you to approve; the key is then saved under ~/.prereason. Or sign up at prereason.com.
• PREREASON_CLIENT — The app this bridge runs in (claude-desktop, cursor, windsurf, claude-code, ...), so your PreReason dashboard names the connection.