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fix(core): make fromJsonSchema() use runtime-aware default validator … (#1825)

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Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com>
This commit is contained in:
Konstantin Konstantinov 2026-03-31 14:06:08 +03:00 • committed by GitHub
commit 5f32a90f0d
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2 changed files with 74 additions and 6 deletions
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9
packages/server/src/fromJsonSchema.ts Normal file
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@ -0,0 +1,9 @@
import type { JsonSchemaType, jsonSchemaValidator, StandardSchemaWithJSON } from '@modelcontextprotocol/core';
import { fromJsonSchema as coreFromJsonSchema } from '@modelcontextprotocol/core';
import { DefaultJsonSchemaValidator } from '@modelcontextprotocol/server/_shims';
let _defaultValidator: jsonSchemaValidator | undefined;
export function fromJsonSchema<T = unknown>(schema: JsonSchemaType, validator?: jsonSchemaValidator): StandardSchemaWithJSON<T, T> {
return coreFromJsonSchema<T>(schema, validator ?? (_defaultValidator ??= new DefaultJsonSchemaValidator()));
}

3
packages/server/src/index.ts
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@ -43,5 +43,8 @@ export type { CreateTaskRequestHandler, TaskRequestHandler, ToolTaskHandler } fr
export { ExperimentalMcpServerTasks } from './experimental/tasks/mcpServer.js';
export { ExperimentalServerTasks } from './experimental/tasks/server.js';
// runtime-aware wrapper (shadows core/public's fromJsonSchema with optional validator)
export { fromJsonSchema } from './fromJsonSchema.js';
// re-export curated public API from core
export * from '@modelcontextprotocol/core/public';