CLAUDE_CODE_GATEWAY_HINT_HEADERS

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.273, including the newest one read.

Releases whose published page names CLAUDE_CODE_GATEWAY_HINT_HEADERS.

1. v2.1.283 25 Sep 2026
   Requests can now carry a prompt id header for gateways

   API requests can carry a new x-claude-code-prompt-id header naming the prompt behind them, under the same rule as other gateway hint headers

   found in this entry's text

2. v2.1.273 15 Sep 2026
   New gate for gateway hint headers on first-party surfaces

   A new internal check decides when Claude Code sends extra gateway hint headers on first-party requests

   found in this entry's text, named in this entry

No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.

One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.

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 environment variable does. All environment variables.