modelcontextprotocol / modelcontextprotocol/registry

Validation feedback: description max length constraint hit for server.json

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@rdimitrov is already working on this.

Since Apr 24, 2026.

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Description

Sharing a docs-improvement suggestion from publishing prep.

I hit a validation error while running:

mcp-publisher validate server.json

Error returned:
expected length <= 100 at body.description.

Request: please document this explicit limit in quickstart/schema docs (if intended), so publishers can avoid trial-and-error.

Context: project preparing publish as io.github.aryaminus/controlkeel.

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