Claude Code v0.2.45

# Claude Code v0.2.45 Changelog

Claude Code now supports a new environment variable CLAUDE_CODE_EXTRA_BODY that allows users to inject additional parameters into API requests.

Usage:

# Set custom API parameters as a JSON object
export CLAUDE_CODE_EXTRA_BODY='{"temperature": 0.8, "max_tokens": 4000}'
claude "Your prompt here"

This feature enables:

• Customization of API request parameters without modifying code
• Fine-tuning of Claude's response behavior (temperature, max tokens, etc.)
• Advanced users to experiment with API options

Error Handling:

• The value must be a valid JSON object (not an array or primitive)
• Invalid JSON will be logged to stderr and ignored
• Parsing errors are gracefully handled with descriptive error messages

• Switched from default imports to named imports for better tree-shaking:
• stream module now uses import { Readable as o$4 }
• node:process module now uses import { cwd as zw0 }
• These changes may result in slightly smaller bundle sizes and improved load times

The new O41() function handles the environment variable parsing:

function O41() {
  let I = process.env.CLAUDE_CODE_EXTRA_BODY;
  if (!I) return {};
  try {
    let G = wO(I); // JSON parse wrapper
    if (G && typeof G === "object" && !Array.isArray(G)) return G;
    return (console.error("CLAUDE_CODE_EXTRA_BODY must be a JSON object"), {});
  } catch (G) {
    return (
      console.error(
        `Error parsing CLAUDE_CODE_EXTRA_BODY: ${G instanceof Error ? G.message : String(G)}`,
      ),
      {}
    );
  }
}

This function is likely called during API request construction to merge custom parameters with default request bodies.