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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 v0.2.42

Batch Tool Execution (Call Tool)

A powerful new tool that allows executing multiple tools in a single request for improved performance:

  • Tool Name: BatchTool (displayed as "Call" to users)
  • Purpose: Run multiple independent tool operations at once to reduce context usage and latency
  • Execution: Tools are executed in parallel when possible, otherwise serially
  • Usage Example:
  claude> /call
  {
    "invocations": [
      {
        "tool_name": "Bash",
        "input": {
          "command": "git blame src/foo.ts"
        }
      },
      {
        "tool_name": "Glob", 
        "input": {
          "pattern": "**/*.ts"
        }
      },
      {
        "tool_name": "Grep",
        "input": {
          "pattern": "function",
          "include": "*.ts"
        }
      }
    ]
  }

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