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 v2.1.92 Home All releases olderv2.1.91 v2.1.94newer
Claude Code v2.1.92

Tool Result Deduplication [In Development]

What

When identical tool results appear multiple times in a conversation, subsequent occurrences are replaced with a short reference to the original, saving context window space.

Status

Feature-flagged behind tengu_onyx_basin_m1k (default: false)

Details
  • Hashes tool result content and tracks seen results with short IDs (r1, r2, etc.)
  • Duplicate results are replaced with: <identical to result [rN] from your {tool} call earlier — refer to that output>
  • Only applies to results longer than 256 characters and shorter than a configurable max
  • Tracks telemetry via tengu_tool_result_dedup
Evidence

Tool result deduplication (gated by tengu_onyx_basin_m1k, search for "result-id:", "identical to result")

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

See this entry in the whole of v2.1.92 →