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gabime/spdlog ↗
16.7%
of 36 commits were committed by an AI agent — a floor, not an estimate
Too little recent activity to publish. Only 36 commits landed in this window, so the percentage is noisy. Repositories below 100 are excluded from the index for this reason.
16.7% agent · top contributor 33.3%5 contributors
team

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

6
agent commits
30
human commits
5
agent contributors
33.3%
largest contributor

Assisted or autonomous

6assisted
0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. The agent ran git commit during a working session, with a person there. Autonomous — a bot identity is the author, no human in the loop. Across the whole index, 93.7% of agent commits are assisted.

Agent share by month

Feb26
Mar26
Apr26
May26
Jun26
Jul26
Aug26
Sep26

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

Which agents

GitHub CopilotGitHub411.1%
Claude CodeAnthropic25.6%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

  • 4122216aAdd a pkg-config file for header-only usage (#3634)GitHub Copilot
  • 8369aa9aMake stdout sink `_get_osfhandle` exception message namespace-agnostic (#3GitHub Copilot
  • 4800ae0cPin Windows CI to `windows-2022` for VS2022 matrix jobs (#3622)GitHub Copilot
  • f5f173a1Fix stale current_size_ after rotate_now() in rotating_file_sink (#3642)Claude Code
  • 13680fa0Enable defining custom namespace for spdlog (#3610)Claude Code

What was excluded

Commits in window36
Merge commits removed−0
CI / dependency bots removed−0
Considered36

Bots are excluded from the denominator entirely. Counting dependabot as “AI-written code” is the fastest way to produce a meaningless number.

How this was measured

Measured over February–August 2026, cloned directly. Detection is deterministic string matching against signatures agents write about themselves — no heuristics, no style analysis. Merge commits and CI bots are excluded from the denominator. The figure is a floor: squash merges strip trailers, so real usage is higher. Contributor counts are aggregate — no individual is named.

Run it yourself: npx qmmit-cli gabime/spdlog

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