Source: https://seerepo.com/r/Effect-TS/effect/ai
Markdown source: https://seerepo.com/r/Effect-TS/effect/ai.md
Description: AI signed 1.8% of the 12,269 commits of effect. Each AI tool with its commits, and the last ones it signed.

# How much of effect did AI write?

AI signed 1.8% of the 12,269 commits of effect. Signed by Claude (205) and Cursor (11).

Since its first commit, on May 27, 2020.

## Who signed the commits

- Claude: 205 commits (1.7%)
- Cursor: 11 commits (0.1%)
- People: 98.2%

## Commits per month

Each month's commits up to its last one, with those an AI signed. Merges don't count.

- 2024-12: 237 commits, 0 signed by AI (0%)
- 2025-01: 188 commits, 0 signed by AI (0%)
- 2025-02: 124 commits, 0 signed by AI (0%)
- 2025-03: 126 commits, 0 signed by AI (0%)
- 2025-04: 86 commits, 0 signed by AI (0%)
- 2025-05: 166 commits, 0 signed by AI (0%)
- 2025-06: 168 commits, 0 signed by AI (0%)
- 2025-07: 299 commits, 27 signed by AI (9%)
- 2025-08: 173 commits, 3 signed by AI (1.7%)
- 2025-09: 256 commits, 0 signed by AI (0%)
- 2025-10: 145 commits, 1 signed by AI (0.7%)
- 2025-11: 159 commits, 0 signed by AI (0%)
- 2025-12: 159 commits, 4 signed by AI (2.5%)
- 2026-01: 236 commits, 9 signed by AI (3.8%)
- 2026-02: 379 commits, 15 signed by AI (4%)
- 2026-03: 297 commits, 1 signed by AI (0.3%)
- 2026-04: 136 commits, 3 signed by AI (2.2%)
- 2026-05: 121 commits, 7 signed by AI (5.8%)
- 2026-06: 142 commits, 6 signed by AI (4.2%)
- 2026-07: 340 commits, 21 signed by AI (6.2%)
- 2026-08: 516 commits, 27 signed by AI (5.2%)
- 2026-09: 569 commits, 8 signed by AI (1.4%)
- 2026-10: 996 commits, 82 signed by AI (8.2%)
- 2026-11: 99 commits, 2 signed by AI (2%)

## The last commits an AI signed

- 2026-11-03 · Claude · [e7a873d](https://github.com/Effect-TS/effect/commit/e7a873d5edb65ace1e10083417db0d5e9ed6352b): fix(OpenAI): Ignore OpenAI commentary messages in structured output (#10329)
- 2026-11-01 · Claude · [92201bc](https://github.com/Effect-TS/effect/commit/92201bcd47f1789590ff884542051e2123fdb529): Notify cluster sends from WithTransaction handlers after commit (#10218)
- 2026-10-30 · Claude · [5e56eba](https://github.com/Effect-TS/effect/commit/5e56eba0273b67e769170adfc6e123f0b6d985ad): Run ClickHouse migrator ledger writes as commands (#10126)
- 2026-10-29 · Claude · [194dd79](https://github.com/Effect-TS/effect/commit/194dd79f17d70b264cd4d82d2185726faaa30d4e): fix(effect): stop Pool.get hanging in a finalizer of the pool's own scope (#10129)
- 2026-10-29 · Claude · [e1b4d37](https://github.com/Effect-TS/effect/commit/e1b4d37efe83d34764b2e7e07d02d9b8b405b05c): Fix NodeRedis scope finalization for pending connections and commands (#10100)
- 2026-10-28 · Claude · [631d4f4](https://github.com/Effect-TS/effect/commit/631d4f41e2c09ce039cddad3f460a4793e53989d): Add Schema.isAscii pattern check (#8303)
- 2026-10-28 · Claude · [c4d298d](https://github.com/Effect-TS/effect/commit/c4d298d332b834f3071c96a83b18a6d6a4316cb6): Render inherited CLI flags in their own help section with formatter collapse options (#9276)
- 2026-10-28 · Claude · [3f8f359](https://github.com/Effect-TS/effect/commit/3f8f3595b06f144b109c47c0bbc8788262aedb21): ai: TypeSafe images and Box questions via Decision.locate (#9177)
- 2026-10-28 · Claude · [4f16778](https://github.com/Effect-TS/effect/commit/4f167781512ad6c1e5ac54bd4449237d12d0f96b): Add pool occupancy stats to Pool, PgPool, and PgClient (#9090)
- 2026-10-28 · Claude · [fa516c6](https://github.com/Effect-TS/effect/commit/fa516c644b9cf85ec869b486dd2fb6c4c434fc51): Export HttpClient.isTransientError and isTransientResponse (#9059)

## How we know

Every AI coding tool leaves its signature in the commits it makes: a Co-Authored-By line, its own author name, or the merge of its branch. SeeRepo reads those signatures in the repo's history; a commit without one counts as made by people, and merges don't count.

Every AI tool SeeRepo recognizes: https://seerepo.com/agents

## Frequently asked questions

### Which AI tool signed the most commits in effect?

Claude, with 205 of the 12,269 commits of effect.

The proof: [its last signed commit, e7a873d](https://github.com/Effect-TS/effect/commit/e7a873d5edb65ace1e10083417db0d5e9ed6352b)

### Since when does AI sign commits in effect?

Since July 2025: the first month an AI tool signed a commit of effect.

### How many commits does effect have?

effect has 12,269 commits since May 27, 2020. Merges don’t count.

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.