Garry Tan and Claude Fable 5
ce4a7bbb7e
fix: detect bearer-token thin clients via host MCP registration ( #2520 )
...
The #2051 thin-client fix keys detection on the remote_mcp marker in
~/.gbrain/config.json — but that marker is only written by the OAuth path
(gbrain init --mcp-only). Bearer-token installs (gbrain connect <url>
--token, gbrain's own recommended default for local/personal use) never
touch config.json, so they fell through to the local probe, failed against
the dead-or-absent local engine, and landed on missing-config / broken-db /
broken-config / engine-locked — silently suppressing brain blocks for a
fully-working remote brain.
New evidence source: hasRemoteOnlyGbrainMcp() reads ~/.claude.json MCP
registrations (user scope AND project scope) with the same classification
rules as gstack-gbrain-detect's tier-3 fallback. File-read only — no
subprocess, no network (a classifier network probe is the #1964 pathology).
Wired at two sites in freshClassify:
- missing-config branch: a bearer thin client may never have run a local
init; if the host's only gbrain registration is remote-HTTP, that
registration IS the brain → thin-client.
- post-probe-failure demotion: broken-db / broken-config / engine-locked
reclassify to thin-client when the only gbrain registration is remote.
A local-stdio sibling registration blocks the demotion (federation
guard: a user running a local engine plus a remote team brain keeps
precise local statuses). "timeout" is excluded — already usable, and
may be a genuinely healthy slow local engine.
7 new unit tests in test/gbrain-local-status.test.ts: user-scope, project-
scope, engine-locked/broken-db demotion, federation guard, no-registration
discriminator, end-to-end --is-ok gate (35 pass total in the file).
Root-cause analysis by @d-danielsun in #2520 .
Fixes #2520
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com >
2026-08-16 10:01:44 -07:00
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