claudegoodies
Skill

fastmcp

From NousResearch

Build, test, inspect, install, and deploy MCP servers with FastMCP in Python. Use when creating a new MCP server, wrapping an API or database as MCP tools, exposing resources or prompts, or preparing a FastMCP server for Claude Code, Cursor, or HTTP deployment.

Facts

Repository
NousResearch/hermes-agent
Status
Actively maintained
Last commit
Source file
optional-skills/mcp/fastmcp/SKILL.md

Source preview

The instructions Claude Code reads when this skill runs.

# FastMCP

Build MCP servers in Python with FastMCP, validate them locally, install them into MCP clients, and deploy them as HTTP endpoints.

## When to Use

Use this skill when the task is to:

- create a new MCP server in Python
- wrap an API, database, CLI, or file-processing workflow as MCP tools
- expose resources or prompts in addition to tools
- smoke-test a server with the FastMCP CLI before wiring it into Hermes or another client
- install a server into Claude Code, Claude Desktop, Cursor, or a similar MCP client
- prepare a FastMCP server repo for HTTP deployment

Use `native-mcp` when the server already exists and only needs to be connected to Hermes. Use `mcporter` when the goal is ad-hoc CLI access to an existing MCP server instead of building one.

## Prerequisites

Install FastMCP in the working environment first:

```bash
pip install fastmcp
fastmcp version
```

For the API template, install `httpx` if it is not already present:

```bash
pip install httpx
```

## Included Files

### Templates

- `templates/api_wrapper.py` - REST API wrapper with auth header support
- `templates/database_server.py` - read-only SQLite query server
- `templates/file_processor.py` - text-file inspection and search server

### Scripts

- `scripts/scaffold_fastmcp.py` - copy a starter template and replace the server name placeholder

### References

- `references/fastmcp-cli.md` - Fa
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