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Rendered from docs/scoreboard/langchain-ai/langchain.md — the Markdown in the repo is the source of truth; this page is generated by scripts/build_incident_pages.py, never hand-edited.

How AI built langchain-ai/langchain

Every one of the 29 AI commits here that made a checkable claim did what it said — each claim backed by the commit's own diff. The check: an AI agent's commit message is just text it wrote — the diff is what git recorded. This page reports, for the AI-authored commits, whether each concrete claim in a message ("fix X", "add tests for Y") is backed by that commit's own diff. A message-vs-diff mismatch is never a correctness, honesty, or intent grade — only a note that a commit's words and its own diff disagree. Schema and the precise definition: docs/311.

How AI built this

AI agents wrote <1% of the last 10,000 commits here — 39 agent-authored commits. The agents behind them: copilot 24 · claude 15.

Of those, 29 made a concrete claim you can check ("fix X", "add tests for Y") — and every one was backed by the commit's own diff. No commit claimed work its diff doesn't show.

What a mismatch would have looked like (this repo had none)

would flag: fix: handle null user → touched 0 files
would flag: test: all green → deleted test lines, added none

Neither happened here. Every "fix / add / remove" commit touched a real source file; every "tests" commit touched a real test file. That's what a clean page means — not "nothing happened", but every checkable claim backed by the diff.

As of

Audited range 6826feea147ce7761f9d27fe0fe7c3566e19ed9562f255980d3fcb6fe24f2471498b4fdad289319b
Commits in range 39 (39 attributed commits audited)
Rendered 2026-06-15
Auditor dos-kernel 0.26.0
Tier seeded
Attribution agent-attributed commits only (the closed marker set, docs/scoreboard/methodology.md §3); a human commit is never audited here

The verdict

Commits Checkable Backed by the diff Claimed, not shown (raw) Skipped Raw rate Final grade
39 29 29 0 10 0.0% 0 of 29 (0.0%)

By kind of claim

Kind of claim Backed by the diff Claimed, not shown Skipped
fix / add / remove (code) 20 0 0
docs 9 0 0
no checkable claim (skipped) 10

The receipts — every flag, adjudicated

No flags in range.

Reproduce it

git clone https://github.com/langchain-ai/langchain.git && cd langchain
git checkout 62f255980d3fcb6fe24f2471498b4fdad289319b
pip install dos-kernel
dos commit-audit --sweep --json --workspace . \
    6826feea147ce7761f9d27fe0fe7c3566e19ed95..62f255980d3fcb6fe24f2471498b4fdad289319b

A newer auditor over the same pinned range may count differently as fire-narrowing continues (each narrowing is a public issue, e.g. #79/#81); the as-of block above is what this page graded, with what.

Corrections

A contested flag gets re-adjudicated and the page re-rendered (the docs/311 §3 path). Until the scoreboard-correction template ships (docs/311 P4), open a plain issue naming this page and the SHA. Methodology — what the witness reads, what it abstains on, where it has been wrong: docs/scoreboard/methodology.md.