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 v2.1.246 Home All releases olderv2.1.245 v2.1.247newer
Claude Code v2.1.246

MCP servers that dropped before wiring now reconnect

You'll notice
Useful3 Signal1
MCP

An MCP server that dropped before reconnect wiring finished now reconnects right away.

What

If an MCP server's connection had already closed by the time the reconnect handler was attached, the reconnect is now scheduled immediately instead of waiting for a close event that will never arrive.

Details
  • The log line distinguishes a transport that closed later from one that "had already closed when wired".
  • Reconnects now emit telemetry: success with the attempt count and whether it was found already closed, and failure as either needs_auth or exhausted once the attempt cap is reached.
Evidence

had already closed when wired

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

See this entry in the whole of v2.1.246 →