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feat!: drop Zod v3 support (#1460)

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Matt 2026-02-03 19:48:08 +00:00 • committed by GitHub
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@ -39,7 +39,7 @@ This monorepo publishes split packages:
- **`@modelcontextprotocol/server`**: build MCP servers
- **`@modelcontextprotocol/client`**: build MCP clients
Both packages have a **required peer dependency** on `zod` for schema validation. The SDK internally imports from `zod/v4`, but remains compatible with projects using Zod v3.25+.
Both packages have a **required peer dependency** on `zod` for schema validation. The SDK uses Zod v4.
### Middleware packages (optional)