CLAUDE_GATEWAY_LOG_FORMAT
A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.319, including the newest one read.
Setting CLAUDE_GATEWAY_LOG_FORMAT to json turns Claude Code gateway messages into structured error logs
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.319.
In the changelogs
1Releases whose published page names CLAUDE_GATEWAY_LOG_FORMAT.
-
v2.1.319
Gateway messages can be logged as JSON with CLAUDE_GATEWAY_LOG_FORMAT
Setting CLAUDE_GATEWAY_LOG_FORMAT to json turns Claude Code gateway messages into structured error logs
found in this entry's text, named in this entry
First cited
0No 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.
Presence across releases
1Build by build
1One 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.