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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 v2.0.75

1 entries read diff v2.0.74 → v2.0.75 Markdown

This is a maintenance release with a minor prompt optimization. The primary change removes a redundant instruction from subagent prompts that was already present in the main system prompt, reducing prompt token usage without affecting behavior.

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Changesopen

Reduced Subagent Prompt Token Usage#

What

Removed a duplicate instruction from subagent prompts about not using colons before tool calls.

Details
  • The instruction "Do not use a colon before tool calls. Text like 'Let me read the file:' followed by a read tool call should just be 'Let me read the file.' with a period." was removed from the subagent system prompt builder
  • This instruction remains in the main system prompt (zb function), so the guidance is still provided to the main conversation thread
  • Subagents inherit context from the parent, making this instruction redundant for them
  • This reduces token usage in subagent conversations without changing behavior
Evidence

XbA() at line 516791 (subagent prompt builder, removed duplicate colon instruction)

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

1 entry

Notesopen

#

This release contains no user-facing behavior changes. The 15 import additions and 15 import removals visible in the diff are internal code reorganization (changing from default imports to named imports for various Node.js modules) with no functional impact.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Verbatim
Official · Anthropic

Anthropic’s official release notes

Published verbatim by Anthropic for v2.0.75. Text is unmodified from the upstream changelog. Everything else on this page came out of the bundle instead, which is why the two lists don't match.

  • Minor bugfixes
Read it on GitHub →
System prompt

The system prompt was not captured for this release, so this page cannot say whether it moved.

Which releases were captured →