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EXPECTED_SCHEMA_FINGERPRINT

The schema-bundle staleness anchor.

EXPECTED_SCHEMA_FINGERPRINT pins the stable protocol-schema fingerprint this SDK was written against. Two consumers:

  • Build time: a test asserts this equals schema/msp/stable/manifest.json, so a schema advance that forgets the SDK reds the SDK lane instead of shipping a silently-stale facade. This is the same manifest-pin pattern the transcripts use.
  • Runtime: the connection machine compares InitializeResult.schema .fingerprint against this pin. A mismatch is a WARNING, never an error — additive-optional evolution means an older SDK keeps working against a newer host.
Source

clients/sdk-ts/src/fingerprint.ts:16

{
  "kind": "Variable",
  "canonicalPath": "EXPECTED_SCHEMA_FINGERPRINT"
}