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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 v1.0.58 22 Jul 2025

API Changes

Tool Permission Context

New I1Q function to get tool-specific permission rules
Enhanced G1Q function for generating contextual permission messages
Permission rules now support content-specific messaging

Agent Management

Agent color preferences stored in new agentColorMap
Color index rotation for automatic assignment
uz0 function for getting agent colors
e31 function for setting custom agent colors

See this entry in the whole of v1.0.58 →