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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.

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Claude Code v2.1.223 5 Aug 2026

Remote agent and MCP task metadata files are schema-validated

Under the hood

Useful2 Signal0

MCP

Malformed remote agent and MCP task metadata files are now skipped rather than trusted.

What

Sidecar .meta.json files are now parsed through a zod schema before their contents are used.

Details

listRemoteAgentMetadata runs safeParse on each file and skips invalid ones, logging the parse error
both the sync and async MCP task listers do the same, so arbitrary JSON no longer flows into the list

Evidence

listMcpTaskMetadata: skipping , listRemoteAgentMetadata: skipping

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

See this entry in the whole of v2.1.223 →