# FastMCP

by [Prefect](/organizations/prefect/)

- **ID:** `f52d994c-6e44-4740-bdf9-6e3c76c0cd05`
- **JSON API:** /api/v1/catalog/products/f52d994c-6e44-4740-bdf9-6e3c76c0cd05/
- **Slug:** fastmcp
- **Product website:** https://github.com/PrefectHQ/fastmcp
- **Documentation:** https://gofastmcp.com/getting-started/welcome
- **Organization website:** https://www.prefect.io
- **Categories:** [Agent Framework & Orchestration](/categories/agent-framework-orchestration/), [Developer Tools](/categories/developer-tools/)

## Description

An open-source Pythonic framework for building MCP servers and clients, wrapping Python functions into MCP-compliant tools, resources, and prompts with auto-generated schema and validation.

## AI-native score: Unrated

Research coverage is 38/100. An AI-native grade requires 40/100. The provisional breakdown below shows the AI-native signals recorded so far. The AI-native score measures agent-readiness and is not a substitute for your own security or vendor-risk review. See [methodology](/methodology/) for how coverage and the grade are computed.

| Component | Applies | Raw | Effective weight | Nominal weight | Contribution |
| --- | --- | --- | --- | --- | --- |
| Integration | Yes | 4/10 | 35% | 35% | 14.0 |
| Trust | Yes | 2/6 | 30% | 30% | 10.0 |
| Portability | Yes | 4/4 | 20% | 20% | 20.0 |
| Security | Yes | 0/4 | 15% | 15% | 0.0 |

- **Integration signals:** MCP server (+2); Command-line interface (+1); SDK / developer kit (+1)
- **Trust signals:** Sandbox environment (yes, +2)
- **Portability signals:** Open standards (+1); Standard protocol access (+1); Self-hostable (+1); Open source (+1)

## Trust & Data Policy

- **WebMCP:** – No
- **Sandbox environment:** ✓ Yes
- **Open standards:** ✓ Yes
- **Standard protocol access:** ✓ Yes
- **Self-hostable:** ✓ Yes
- **Open source:** ✓ Yes
- **Not yet researched:** llms.txt, Headless signup, Trust center, Multi-factor authentication, Zero data retention, No generative AI training, Hard budget caps, Data export, Data import, No proprietary-SDK lock-in, Documented provider swap
- **Source code:** https://github.com/PrefectHQ/fastmcp

## Confirmed absences

These decision fields were researched and confirmed absent — not available based on current evidence, until contrary information supersedes the finding. Each carries the check performed, the page checked, and the date, so you can act on the negative without repeating the research. A label-scoped absence applies only to its label (e.g. no SOC 2 does not mean no certifications).

- **A2A servers** — confirmed absent (whole field), checked 2026-10-13. Checked the product developer documentation and integration overview for an Agent2Agent protocol server or Agent Card; none is documented on this page. Source: https://gofastmcp.com/llms.txt
- **Web-MCP** — confirmed absent (whole field), checked 2026-10-13. Checked the product developer documentation and integration overview for browser WebMCP tool registration or modelContext integration; none is documented on this page. Source: https://gofastmcp.com/llms.txt

## Security & Compliance

**Compliance certifications:** Not yet researched.
**Access controls:** Not yet researched.

## Capabilities

- **Build MCP Servers** — Wrap application functions into MCP-compliant tools, resources, and prompts.

## Jobs To Be Done

- **Expose code to AI agents over MCP** — Make existing functions callable by AI agents through the Model Context Protocol.

## Offers

No offers listed.

## Reviews

No approved reviews yet.

## Benchmarks

No benchmarks listed.

## Documentation

The primary documentation link is at the top of this page. No other documentation links listed.

## API Specs

Not yet researched.

## MCP Servers

- [FastMCP](https://gofastmcp.com/mcp)

## A2A Servers

Confirmed absent based on current evidence — no A2A servers. See Confirmed absences above for method, source, and date.

## Native Connectors

Not yet researched.

## Command-Line Interfaces

- [FastMCP CLI](https://gofastmcp.com/deployment/running-server) (`fastmcp-cli`)

## Developer Kits

- [fastmcp](https://pypi.org/project/fastmcp/) — Languages: Python

## Agent Skills

Not yet researched.
## Other products from Prefect

- [Dagster](/organizations/prefect/products/dagster/) — Unrated.
- [FastMCP Gateway](/organizations/prefect/products/fastmcp-gateway/) — Unrated.


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## Add this badge to your site

Own this product? The Open Agent Guide badge links your site back to this directory listing. It makes no grade claim while this product is unrated, and updates on its own once enough is verified to assign a grade.

Badge image: https://www.openagentguide.com/organizations/prefect/products/fastmcp/badge.svg (seal), https://www.openagentguide.com/organizations/prefect/products/fastmcp/badge.svg?style=flat (flat). For the copy-paste HTML and Markdown embed code, open the badge panel on [this product's page](https://www.openagentguide.com/organizations/prefect/products/fastmcp/#badge-embed-heading). See [how scoring works](/methodology/).

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Content licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).