Released25 Sep 2026Commit218555faLine0.2.x

v0.2.12

Folio 0.2.12 speaks MCP protocol 2026-07-28

Notes

Claude Code 2.1.282 probes MCP servers to see whether they speak protocol revision 2026-07-28. Folio 0.2.11 rejected the probe and stayed on the older handshake, which kept working. This release takes sigil-mcp 0.18.1, so folio answers the probe and works on either revision.

Changes

  • Folio answers server/discover and gives 2026-07-28 clients the result shape they check for (ttlMs and cacheScope on tool and resource listings). Clients on the older handshake get the same answers as before. (sigil-mcp 0.18.1)

Verification: all 23 unit test files pass. A fresh Claude Code 2.1.282 session negotiated 2026-07-28 with this build and called folio/status successfully.

Commit

218555faf89491e56e4f5e045ebae8d32efb7264

This commit is older than the 20 that keep a page here, so it has none. It is in the clone.

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