FastMCP v4.1.7
FastMCP 4.1.7 backports 42 fixes from the 4.2 line.
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FastMCP
Every row from FastMCP in The Deploy Log: 9 rows, newest first, each linking the publisher's own page. The newest shipped are FastMCP v4.1.7 and FastMCP v4.1.8. The first is dated and the newest . By lane: Tools and products 9. They fall in 3 months. The tables below count them by lane and month, and date them.
| Lane | Rows |
|---|---|
| Tools and products | 9 |
| Figure | Value |
|---|---|
| First row dated | |
| Newest row dated | |
| Median days between release days, publisher's dates only | 8 |
FastMCP v4.1.8
FastMCP 4.1.8 backports 28 fixes from the 4.2 line.
FastMCP v4.1.6
ClientGroup keeps tool routes after group context exits.
FastMCP v4.1.4
FastMCP v4.1.4 fixes CLI transport preservation, session visibility, OAuth identity assertions, and adds redis-py credential provider support.
FastMCP v3.4.10
FastMCP v3.4.10 backports authorization checks after transforms and prevents denied concrete resources from being served by matching templates.
FastMCP v3.4.11
FastMCP v3.4.11 requires certifi 2026.10.19 or later for its HTTP stack and certifi-backed integrations.
FastMCP v4.1.2
FastMCP v4.1.2 applies component authorization after transforms and prevents denied resources from falling through matching templates.
FastMCP v4.1.0
FastMCP v4.1.0 released with fixes across OpenAPI, proxies, auth, tasks, CLI, and full Python 3.15 support.
FastMCP v4.0.10
Task-enabled tools now work behind search transforms and CodeMode.
For FastMCP's own page or README, this badge links here: <a href="https://deployedbyai.com/log/company/11b827318913/fastmcp/?k=badge"><img src="https://deployedbyai.com/log/company/11b827318913/badge.svg" alt="FastMCP in The Deploy Log" width="231" height="20"></a>
One line every time AI actually ships, around the clock, free on Threads and Bluesky. Every one is in The Deploy Log with its source.