Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
One name

tengu_agents_md_mod

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

Familyfeature flagFeature flags
Builds0of the 122 on this box
First seennever in a mined build
Last seennever in a mined build
Statusnever minedas of v2.1.278

What it is

A new built-in agents-md plugin can load AGENTS.md as project instructions instead of, or alongside, CLAUDE.md

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.274.

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.

First cited

0

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.

Gate readings

2
ReleaseResolvedThis accountAnonymousCompiled default
v2.1.277 read on another version Off by default, switched on for this account on on off
v2.1.274 read on another version Not enough to say no value returned no value returned off

Two arms, because they disagree: this account is the one account this site reads and anonymous is a baseline with no identity attached. A reading says nothing about your account, and off cannot rule out a rollout both readings sit outside of. What these readings can and cannot show.

Flag server, over time

10
Read asReadingFromUntilVersion installed
this account on 2026-09-18T23:25:04Z 2026-09-22T05:45:05Z v2.1.277 to v2.1.278
anonymous on 2026-09-18T18:20:06Z 2026-09-22T05:45:05Z v2.1.277 to v2.1.278
this account off 2026-09-18T22:35:04Z 2026-09-18T22:35:04Z v2.1.277
this account on 2026-09-18T18:20:06Z 2026-09-18T22:05:04Z v2.1.277
anonymous off 2026-09-18T17:20:05Z 2026-09-18T18:00:06Z v2.1.276
this account off 2026-09-18T17:20:05Z 2026-09-18T18:00:06Z v2.1.276
anonymous on 2026-09-18T17:16:15Z 2026-09-18T17:16:15Z v2.1.277
this account on 2026-09-18T17:16:15Z 2026-09-18T17:16:15Z v2.1.277
this account off 2026-09-17T18:00:06Z 2026-09-18T16:20:04Z v2.1.274 to v2.1.276
anonymous off 2026-09-17T17:35:05Z 2026-09-18T16:20:04Z v2.1.274 to v2.1.276

One row per unbroken stretch of one reading, newest first, from snapshots taken every twenty-five minutes or so. No longer carried is not off: it means the flag server stopped returning the gate at all, which is what a retired experiment looks like. The version column is what was installed when the reading was taken, not what caused it.

Names beside it

Every feature flag in the inventory starting tengu, up to twelve of them.

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 feature flag does. All feature flags.