Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.239 Home All releases olderv2.1.238 v2.1.240newer
Claude Code v2.1.239

MCP servers now report how many tools were dropped for bad schemas

You'll notice
Useful4 Signal2
MCP

MCP servers now tell you how many tools were dropped for malformed schemas.

What

When an MCP server offers tools whose input schemas are malformed, you now get a line saying how many tools were excluded, instead of those tools quietly not appearing.

Details
  • A new per-server count message sits alongside the existing message that names the individual server and tool.
  • Produced from the same place that handles the server's dropped-tool notices.
Evidence

tools excluded (invalid input schema)

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.239 →