v1.16.20 v4.22.0
punkpeye/fastmcpSep 27, 2026 → Sep 26, 20260 days between releases
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Analyzing what changed between v1.16.20 and v4.22.0. This page updates automatically — usually within a minute.
The Two Releases
v1.16.20
v1.16.20
Sep 27, 2026· 25 days ago
Enhances session management debugging by adding unique identifiers to JSON send receipts. It fixes several issues regarding Codex session identity persistence and timeout handling for long conversational turns.
Full release notesv4.22.0
v4.22.0
Sep 26, 2026· 25 days ago
This release enhances authentication handling by forwarding specific configuration options through providers and fixing OpenAPI query array formatting. It also improves logging compliance and MCP endpoint configuration.
Full release notes