feat(core): restore v1 Zod-schema overloads on setRequestHandler/setNotificationHandler/request#1891
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feat(core): restore v1 Zod-schema overloads on setRequestHandler/setNotificationHandler/request#1891felixweinberger wants to merge 1 commit intomainfrom
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🦋 Changeset detectedLatest commit: 0daaa15 The changes in this PR will be included in the next version bump. This PR includes changesets to release 6 packages
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@modelcontextprotocol/client
@modelcontextprotocol/server
@modelcontextprotocol/express
@modelcontextprotocol/fastify
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…otificationHandler/request Adds to Protocol (inherited by Client/Server): - setRequestHandler/setNotificationHandler(ZodSchema, handler) — the v1 form, first-class - request(req, resultSchema, opts?) — the v1 explicit-schema form, first-class - callTool(params, resultSchema?, opts?) — accepts the v1 schema arg (ignored) for source compat - removeRequestHandler/removeNotificationHandler/assertCanSetRequestHandler accept any method string Custom (non-spec) methods work via the Zod-schema form, same as v1. schema.ts/standardSchema.ts unchanged from main.
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Part of the v2 BC series — see reviewer guide.
Restores the v1 calling forms on
Protocol(inherited byClient/Server) so v1 code keeps working unchanged:setRequestHandler(ZodSchema, handler)/setNotificationHandler(ZodSchema, handler)— method name read from the schema'smethodliteralrequest(req, resultSchema, options?)— explicit-result-schema form, plus method-keyed return type for spec methodscallTool(params, resultSchema?, options?)— accepts the v1 schema arg (ignored) for source compatremoveRequestHandler/removeNotificationHandler/assertCanSetRequestHandleraccept any method stringCustom (non-spec) methods work via the Zod-schema form, same as v1.
schema.ts/standardSchema.tsare unchanged from main.The 3-arg validator-agnostic form is split out as #1916. Exporting
Protocol+ProtocolSpecis #1917.Motivation and Context
v1 → v2 backwards compatibility. The largest single source of v2 typecheck breaks across consumer audits was
setRequestHandlerno longer accepting the Zod-schema form; this restores it as a first-class overload.How Has This Been Tested?
packages/core/test/shared/customMethods.test.ts— Zod-schema round-trip, invalid-params rejection,removeRequestHandler('any/string'), two-arg spec form,notification()mock-assignability.Breaking Changes
None — additive.
Types of changes
Additional context
#1916 and #1917 stack on this.