B4 asked whether this side gets server identity for free in tool names.
It does not. create_sdk_mcp_server emits the bare name; mcp__ appears in
0 of the package's 24 files, with create_sdk_mcp_server itself as the
positive control that the query can find. Identity lives on the config
and on Server.name, disjoint from anything the tool list carries.
The prefix does exist -- 178 times, inside the CLI bundled with the SDK.
But that was read off the artifact, not observed in a run, and observing
it would cost the one live query() this repo does not spend. So the
finding is scoped to the seam we can actually hang a recorder on, and
the note says so rather than claiming the wider thing.
Value-proved, not asserted: mutating the SDK to namespace at construction
time turns 3 of the 4 tests red, and the one that stays green is the
population control, which should. The SDK file was restored byte-identical.
Same answer as the MAF sibling, arrived at after 2026-08-09 -- so it is
recorded as a measurement, not as independent convergence.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
