v2.1.209

2.1.209

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Highlights:

• Added tool that runs supplied bash commands and returns output, enabling prompts to perform shell queries
• Added a tool to launch new agents for complex multi-step tasks, enabling delegation and task chaining
• Background agent sessions no longer block /model and other dialogs, restoring dialogs and settings access

CLI changelog

• Fixed /model and other dialogs being blocked in claude agents background sessions (reverts an overly broad guard)

Source: https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md#21209

Metadata

• Time since 2.1.208 release: 7h 20m 56s

• Bundle file size: +14.9 kB (+0.0%)

• Prompt files: +0 (+0.0%)

• Prompt tokens: -5,432 (-5.9%)

Prompt token mix by kind:

• system-reminder: 74.4%→65.9%
• tools: 16.4%→18.8%
• system: 9.3%→15.3%

Files:

• metadata: 19c348c/meta/metadata.md#diff-a08dfa163baef97ea4f56d29009ac65f5f7dbc46e3a58e80d7aa06a2a2520899L10-R10
• prompt stats: 19c348c/meta/prompt-stats.md#diff-fa8e31336ece71d159f37b6fd4ed0c61939849140bd5c08c7ca793b5b2ae7f58L1-R1

Other prompt changes

1. Clarifies that the edit tool performs exact string replacements in files.
2. Adds a tool that executes a given bash command and returns its output.
3. Adds a tool that launches a new agent to handle complex, multi-step tasks.

Links:

1. d244aa1/system-prompts/tool-description-edit.md#diff-d98c9d5750be0d3d005e4bf2b7153b7a85d658c33884e9c9ef520cd58aa2536cR10
2. fee6489/system-prompts/tool-description-executes-given-bash-command-returns.md#diff-e97af91442d47a9becde747dd57118d8c113885e098fb83a92a44cc56313350aR33
3. 840a270/system-prompts/tool-description-launch-new-handle-complex-multi.md#diff-f9c65488006fcb18d293ebca17f2420fa5b869c7f4fca44e5a4b8ec47d6cad2fR26