Source Intelligence
Follow Discord

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 v2.1.206 Home All releases ←olderv2.1.205 v2.1.207newer→
Claude Code v2.1.206

Refusal Category Fallback Routing

What

When the API returns a refusal with a known category, Claude can now route the retry to a specific fallback model rather than always using the armed default fallback.

Details
  • The cyber refusal category routes to claude-opus-4-8 on Opus plan configs.
  • The bio category additionally routes to claude-opus-4-8 on Opus plan configs.
  • A new env var CLAUDE_CODE_REFUSAL_FALLBACK_CATCH_ALL (if set) enables a catch-all fallback for unmapped categories.
  • Per-category routing is overridable by config; unresolvable mapped targets return matched: "none" with reason "mapped_target_unresolvable".
Evidence

Category map (search for "cyber": "claude-opus-4-8"); env var (search for "CLAUDE_CODE_REFUSAL_FALLBACK_CATCH_ALL")

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

See this entry in the whole of v2.1.206 →