<h3>Connect AI models to your Ruby applications with ease</h3> No complex protocols, no integration headaches, no compatibility issues – just
Connect Fast MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Connect AI models to your Ruby applications with ease No complex protocols, no integration headaches, no compatibility issues – just beautiful, expressive Ruby code. The fast mcp mcp server is what makes that connection.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
Sinatra — The Sinatra tool exposed by this serverAuthentication — Fast MCP supports token-based authentication for all connections:Installation goes through your MCP client rather than a global install: point it at @modelcontextprotocol/inspector on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Fast MCP's toolset — Sinatra, Authentication — is a fair guide to whether it matches your workflow. It is maintained by yjacquin; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Fast MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| Sinatra | The Sinatra tool exposed by this server. |
| Authentication | Fast MCP supports token-based authentication for all connections: |
{
"mcpServers": {
"my-great-server": {
"command": "ruby",
"args": ["/Users/path/to/your/awesome/fast-mcp/server.rb"]
}
}
}Configuration as documented by the project. Restart the client after saving.
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.