headersHelper

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. v2.1.248Separate failure code when a credential helper's token is rejected

   A rejected credential-helper token is now reported as its own MCP failure with clearer advice.

   named in this entry

2. v2.1.248Credential-helper tokens suppress the MCP OAuth flow

   An MCP headersHelper that mints an Authorization header now suppresses the OAuth flow.

   named in this entry

3. v2.1.238Plugin marketplaces and archives can mint HTTP headers from a command

   Marketplaces and plugins can run a command to mint short-lived HTTP headers for fetching archives.

   named in this entry

4. v2.1.238Zip-archive plugin entries can carry their own fetch credentials

   Plugin archives can carry their own fetch headers or a helper command instead of inheriting them.

   named in this entry

5. v2.1.238Marketplace validation flags unsafe archive credential setups

   Marketplace validation now warns about unsafe headersHelper and missing sha256 setups.

   named in this entry

6. v2.1.238MCP header-minting commands run through the shared trusted-command runner

   MCP header-minting commands now run with credentials stripped from their environment.

   named in this entry

Documentation pages

• Claude Code changelog mentions it Claude Code CLI
• Discover and install prebuilt plugins through marketplaces mentions it Claude Code CLI
• Error reference mentions it Claude Code CLI
• Hooks reference mentions it Claude Code CLI
• Control MCP server access for your organization mentions it Claude Code CLI
• Deploy managed settings mentions it Claude Code CLI
• Connect Claude Code to tools via MCP mentions it Claude Code CLI
• Monitoring mentions it Claude Code CLI
• Configure permissions mentions it Claude Code CLI
• Constrain plugin dependency versions mentions it Claude Code CLI
• Create and distribute a plugin marketplace mentions it Claude Code CLI
• Plugins reference mentions it Claude Code CLI

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.