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 v2.1.79 Home All releases olderv2.1.78 v2.1.80newer
Claude Code v2.1.79

Memory Verification Instructions

What

New system prompt instructions that teach the model to verify memories against current code before recommending from them. Memories about file paths, functions, or flags may be stale—the model now greps or checks files before acting on recalled information.

Details
  • Added a "Before recommending from memory" section to the memory system prompt
  • Instructs the model: "If the memory names a file path: check the file exists", "If the memory names a function or flag: grep for it"
  • Emphasizes that '"The memory says X exists" is not the same as "X exists now."'
Evidence

Memory verification guardrails (search for "Before recommending from memory" and "The memory says X exists")

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

See this entry in the whole of v2.1.79 →