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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 v2.1.232 13 Aug 2026

Rotated client certificates are picked up after a stale connection

You'll notice

Useful3 Signal2

Network Security not in their notes

Rotated client certificates are picked up mid-session, so you no longer have to restart after a rotation.

CLAUDE_CODE_DISABLE_MTLS_RELOAD_ON_STALE_CONNECTION

What

When a request fails at the TLS or socket layer, Claude Code re-reads the client certificate material and resets its connections if the files changed on disk, so a certificate rotated underneath a long-running session no longer needs a restart.

Details

Triggered on EPROTO, FailedToOpenSocket, and ERR_OSSL_ / ERR_SSL_ errors.
Only runs when a client certificate is configured via CLAUDE_CODE_CLIENT_CERT.
Set CLAUDE_CODE_DISABLE_MTLS_RELOAD_ON_STALE_CONNECTION to skip the reload entirely.
Outcomes are reported under a new telemetry event.

Evidence

CLAUDE_CODE_DISABLE_MTLS_RELOAD_ON_STALE_CONNECTION

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

See this entry in the whole of v2.1.232 →