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 v2.1.247 Home All releases olderv2.1.246 v2.1.248newer
Claude Code v2.1.247

Plugin MCP servers: listing-only mode and stricter file paths

You'll notice
Useful2 Signal3
MCP

Plugin MCP servers can be counted without being resolved, and their config paths must stay inside the plugin.

What

Loading a plugin's MCP servers can now run in a read-only listing mode that counts the servers a plugin declares without actually resolving them. File-based server definitions are resolved through a containment check rather than a plain path join, so a plugin cannot point outside its own directory.

Details
  • The mode is an option at the call site and is off by default.
  • MCPB bundle sources are refused in listing mode, with an explanation that they require the pre-approval download.
  • The skip warning now says "directory-loaded plugin" instead of "project-scope @skills-dir plugin".
Evidence

Skipping MCPB source

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

See this entry in the whole of v2.1.247 →