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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
Home / Reference / Settings keys

options.uuid

setting never mined JSON

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.

SDK replies now carry the uuid of the prompt they answer, on the first frame.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.246.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 150on this box, as of v2.1.309
Written about v2.1.246 first named in a changelog, 25 Aug 2026

In the changelogs

3

Releases whose published page names options.uuid.

  1. v2.1.260
    thinking_tokens frames now carry the triggering user message uuid

    Live thinking-token frames now carry the triggering user message's uuid for attribution.

    found in this entry's text

  2. v2.1.246
    Assistant messages tell you which prompt they answer

    SDK replies now carry the uuid of the prompt they answer, on the first frame.

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

  3. v2.1.246
    Error results and stream events echo the originating prompt id

    Errors and stream events now echo the prompt id that started the turn.

    found in this entry's text

First cited

2

The earliest release whose published evidence quoted options.uuid was v2.1.246, 25 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

ReleaseDateThe span that was quoted
v2.1.24625 Aug 2026Client uuid of the user message that triggered this turn (submitMessage options.uuid), stamped on the turn's FIRST non-ping stream event only
v2.1.24625 Aug 2026Client uuid of the user message that triggered this turn (submitMessage options.uuid), stamped on the turn's FIRST reply frame only

Presence across releases

0

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.

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.

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