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feat(compat): registerTool/registerPrompt accept raw Zod shape, auto-wrap with z.object() (#1901)

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Co-authored-by: Konstantin Konstantinov <KKonstantinov@users.noreply.github.com>
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Felix Weinberger 2026-04-29 16:34:01 +01:00 • committed by GitHub
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---
'@modelcontextprotocol/core': patch
'@modelcontextprotocol/server': patch
---
`registerTool`/`registerPrompt` accept a raw Zod shape (`{ field: z.string() }`) for `inputSchema`/`outputSchema`/`argsSchema` in addition to a wrapped Standard Schema. Raw shapes are auto-wrapped with `z.object()`. The raw-shape overloads are `@deprecated`; prefer wrapping with `z.object()`.
Also widens the `completable()` constraint from `StandardSchemaWithJSON` to `StandardSchemaV1` so v1's `completable(z.string(), fn)` continues to work.