Fastmcp MCP Server by PrefectHQ
by PrefectHQ🚀 The fast, Pythonic way to build MCP servers and clients.
Fastmcp is an open-source mcp server by PrefectHQ, written mainly in Python, with 28,258 GitHub stars and the Apache-2.0 license. Its code was last updated Nov 1, 2026. The latest PyPI release is fastmcp 4.2.0, published Nov 13, 2026, with 15,799,833 downloads last week.
Scan summary: scanned Nov 5, 2026 at commit 9e553dd. Seen able to connect to the internet. 6 published advisories for its package. Scan policy
What Fastmcp can touch
- Our checks did not find this. The tool may still do it.Run shell commandsNot seen in this scan
- Our checks did not find this. The tool may still do it.Run dynamic codeNot seen in this scan
- Our checks did not find this. The tool may still do it.Read or write filesNot seen in this scan
- Our checks did not find this. The tool may still do it.Read environment and secretsNot seen in this scan
- Our checks did not find this. The tool may still do it.Control a web browserNot seen in this scan
- Our checks did not find this. The tool may still do it.Connect to databasesNot seen in this scan
- Our checks did not find this. The tool may still do it.Read or send messagesNot seen in this scan
- Our checks did not find this. The tool may still do it.Touch money or tradingNot seen in this scan
- Seen in this scan, either in the code or while it ran.Connect to the internetFound in the code by our scan
"Not seen" means our checks did not find it, and the tool may still do it. Covers commit 9e553dd, Nov 5, 2026. See the scan policy.
Before you install Fastmcp
AgenticMart scanned Fastmcp on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.
What it can access
- An MCP server is a program your AI app starts and talks to. A local one runs with your user's permissions: it can see the files, environment variables and network your account can.
Before you install
- Pin the version you reviewed instead of always installing the latest release.
- Read the tool list or scripts before the first run, and keep approval prompts on for actions that write, send or delete.
- Maintained by PrefectHQ on GitHub, 28,258 stars and 2,549 forks. Popularity is not proof of safety.
- Last code change: Nov 1, 2026.
- Open-source license: Apache-2.0.
Published advisories for fastmcp
From the OSV database, for this PyPI package. Check that your installed version is past any fix.
- CVE-2025-69196FastMCP OAuth Proxy token reuse across MCP serversFixed in 2.14.2.
- GHSA-7xgj-8392-5q4rFastMCP: Post-transform component authorization is skipped on direct callsFixed in 3.4.10.
- GHSA-c2jp-c369-7pvxFastMCP Auth Integration Allows for Confused Deputy Account TakeoverFixed in 2.13.0.
- CVE-2025-64340FastMCP has a Command Injection vulnerability - Gemini CLIFixed in 3.2.0.
- CVE-2025-62800FastMCP vulnerable to reflected XSS in client's callback pageFixed in 2.13.0.
- GHSA-rcfx-77hg-w2wvFastMCP updated to MCP 1.23+ due to CVE-2025-66416Fixed in 2.14.0.
Fastmcp is an open-source mcp server by PrefectHQ, written mainly in Python. 🚀 The fast, Pythonic way to build MCP servers and clients.
At a glance
- Stars
- 28k
- Forks
- 2.5k
- Language
- Python
- License
- Apache-2.0
- Created
- Nov 2024
- Last update
- Nov 1, 2026
- Type
- MCP Server
- Price
- Free
Topics
Questions about Fastmcp
What is Fastmcp?
🚀 The fast, Pythonic way to build MCP servers and clients.
Who maintains Fastmcp?
Fastmcp is maintained by PrefectHQ on GitHub (PrefectHQ/fastmcp). AgenticMart lists it from public repository data.
Is Fastmcp safe to use?
AgenticMart scanned Fastmcp on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.
What license does Fastmcp use?
It is published under the Apache-2.0 license.
Fastmcp alternatives
View more →Similar mcp servers in Coding Agents, ranked by GitHub stars. Compare licence, recent activity and scan status before you choose.
| Name | Stars | Licence | Last updated | Scan |
|---|---|---|---|---|
| Fastmcp (this page) PrefectHQ | 28k | Apache-2.0 | Nov 1, 2026 | Scanned, no flagged issues |
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