Dataset: 2026-10-27-catalog-ai-v2
Ruleset: b2e8889c66f7
Scanned: 2026-10-27
Window: February–September 15, 2026

Catalog tracking observation. This repository is measured with the same fixed window and ruleset, but it is not part of the published benchmark or its aggregate claims.

The LLVM-based D Compiler.

01Result

ldc-developers/ldc ↗

ldc-developers/ldc AI coding statistics: 2.3%

of 487 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

2.3% agent · top contributor 45.5%5 contributors

team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

agent commits

476

other considered commits

agent contributors

45.5%

largest contributor

02Drivers

What shapes this result

Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.

Assisted or autonomous

11assisted

0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. Autonomous — a bot identity authored the commit without a human identity attached.

Agent share by month

Peak month: 14.9%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	11	2.3%

03Evidence

Inspect the matches

Public commit samples let you inspect the signatures behind the aggregate result.

Matched commit samples

805095bf on GitHubFix dlang/dmd!22980 - "named arguments not allowed here" in const construcClaude Code
fe10843a on GitHubUpdate CMakeLists.txt (#5228)Claude Code
03dd3140 on GitHubfix dlang/dmd!20439 - undefined reference to `internal` for CTFE instance Claude Code

04Method

What entered the denominator

The result begins with commit history, removes merges and routine automation, and reports literal agent signatures as a lower bound.

Exclusion ledger

Commits in window	542
Merge commits removed	−55
CI / dependency bots removed	−0
Considered	487

Bots are excluded from the denominator entirely. Agent attribution requires a literal supported signature; no code-style inference is used.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →GitHub AI commit analyzerInspect another repository with the same evidence model →

Reproduce this observation

Run the same detector locally.

Deterministic signature matching; no code-style inference. Squash merges can remove trailers, so this result remains a measured floor.

npx qmmit-cli ldc-developers/ldc

Scan another repository

Try

Month	Agent share	Considered commits
2026-02	0%	99
2026-03	0%	103
2026-04	14.9%	47
2026-05	8%	25
2026-06	0%	21
2026-07	1.4%	146
2026-08	0%	40
2026-09	0%	6