ai-agent-bench SKILL.md skillA
ai-agent-bench from reidemeister94/development-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add reidemeister94/development-skills/ai-agent-bench@git:20260919.a9f7da5Pins git:20260919.a9f7da5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- reidemeister94/development-skills
- Path
skills/ai-agent-bench/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260919.a9f7da5, committed Sep 19, 2026
- First version recorded
- Apr 29, 2026
- Size
- 1,666 bytes
- Repository stars
- 12
- License
- MIT
Compare Claude Code and Codex on the same code task, with isolated worktrees, common checks, time, and cost.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# AI agent bench Compare agents only with the same task, starting commit, and outcome check. The harness preserves result branches and removes temporary worktrees. Create `<repo>/.agent-bench.toml`: ```toml prompt = "prompts/task.md" start_branch = "main" # or start_commit agents = ["claude", "codex"] outer_check = "./scripts/full_check.sh" inner_check = "uv run pytest tests/integration/test_x.py -q" ``` `outer_check` proves the real outcome before and after, and measures wall time. `inner_check` gives agents fast feedback. Require a clean repo, available CLIs, and a passing `outer_check`. Confirm agents and run ID, then run trials sequentially to avoid load-biased timing: ```bash uv run python <skill>/scripts/run_trial.py --repo "$REPO" --config "$REPO/.agent-bench.toml" --agent "$AGENT" --run "$RUN_ID" ``` Results go to `eval-results/<task>/<agent>/run-<id>-<timestamp>/`. Record unexpected behavior in `ai-agent-bench-anomalies.md` per [anomalies](references/anomalies.md). …
Read the whole file at its exact version.
How to install
mdr add reidemeister94/development-skills/ai-agent-bench@sha256:000f291fe9127b2bThe line at the top of this page pins the label git:20260919.a9f7da5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_aotgrvuskyue3wli)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 29, 2026 and Sep 19, 2026, about one every 36 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.a9f7da5 latest | 2026-09-19 | a9f7da5 | 1,666 B | A | view · diff |
| git:20260724.ba2c70f | 2026-07-24 | ba2c70f | 1,710 B | A | view · diff |
| git:20260713.d210701 | 2026-07-13 | d210701 | 1,888 B | A | view · diff |
| git:20260617.174aad8 | 2026-06-17 | 174aad8 | 4,507 B | A | view · diff |
| git:20260429.0d36b6b | 2026-04-29 | 0d36b6b | 6,383 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1666 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
reidemeister94/development-skills · 12 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_aotgrvuskyue3wli GET https://markdownregistry.com/api/v1/resolve?ref=reidemeister94/development-skills/ai-agent-bench GET https://markdownregistry.com/api/v1/blob/000f291fe9127b2b1c67310660212b7e1cef089cc32b2ec3bf7e1db4c768f190
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.