prototype

A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

What it is

Presence across releases

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Changelog entries naming it

1. v2.1.221New "prototype" skill, present in the bundle but hard-disabled

   A built-in "prototype" skill for one-page HTML mockups ships but is hard-disabled.

   named in this entry

Documentation pages

• optimizing-for-cost-and-intelligence mentions it Claude Developer Platform
• Code Review mentions it Claude Code CLI
• Hooks reference mentions it Claude Code CLI
• Prompt library mentions it Claude Code CLI
• How Claude Tag works mentions it Claude Documentation
• Contributing to MCP mentions it Model Context Protocol
• Design Principles mentions it Model Context Protocol
• Authorization Charter mentions it Model Context Protocol
• SEP Guidelines mentions it Model Context Protocol
• Agents Charter mentions it Model Context Protocol
• Extensions Overview mentions it Model Context Protocol
• SEP-1865: MCP Apps - Interactive User Interfaces for MCP mentions it Model Context Protocol

A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.