agent-eval

agent-eval is a skill for Claude Code from bdfinst/agentic-dev-team. It costs 59 tokens per session (6,577 once invoked), scanned B, original, MIT.

A test runner for code-review agents that sends them prepared examples and grades their results.

In plain words
What is it for?
It is used to evaluate review agents against fixtures and measure detection accuracy.
Why use it?
It helps check whether an agent detects the intended problems and whether changes introduce regressions.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md; positional $N argument.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the dev-team plugin — 98 skills, 54 agents, 4 hooks shipped together

Good fit It is used to evaluate review agents against fixtures and measure detection accuracy.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add bdfinst/agentic-dev-team
Claude Code
/plugin install dev-team

Made for: Claude Code.

Or install dev-team, the plugin that ships this one along with the rest of its 98 skills, 54 agents, 4 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for agent-eval

README.md
[![agentmods](https://agentmods.dev/badge/skills/bdfinst/agentic-dev-team/agent-eval/github.svg)](https://agentmods.dev/skills/bdfinst/agentic-dev-team/agent-eval)
Your own site
<a href="https://agentmods.dev/skills/bdfinst/agentic-dev-team/agent-eval"><img src="https://agentmods.dev/badge/skills/bdfinst/agentic-dev-team/agent-eval/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for agent-eval

Your own site · 80×15
<a href="https://agentmods.dev/skills/bdfinst/agentic-dev-team/agent-eval"><img src="https://agentmods.dev/badge/skills/bdfinst/agentic-dev-team/agent-eval.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,577 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.06577
Opus 5.5 $0.00024 $0.02631
Sonnet 5.5 $0.00012 $0.01315
Haiku 4.5 $0.00006 $0.00658

Measured 24d ago against content hash 5ab8124b2cc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

agent-eval scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

"Cannot find eval fixtures. Expected at `.claude/evals/fixtures/`."
plugins/dev-team/skills/agent-eval/SKILL.md · 582 lines

How it starts

The opening of the file, as written. The whole thing — 582 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Eval

Role: orchestrator. This skill dispatches fixtures to agents and grades results — it does not review code itself.

You have been invoked with the /agent-eval skill. Run review agents against eval fixtures and grade the results.

Monorepo-relative by design (#1637). Every scripts/eval_*.py/citation_lint.py call in this skill is intentionally bare, not a dangling-path defect: none of these scripts ship under plugins/dev-team/scripts/ (verified mechanically — see tests/repo/test_agent_implemented_by_resolves.py's INTENTIONAL_BARE_INVOCATION set), so no ${CLAUDE_PLUGIN_ROOT} path could ever resolve one. They operate on this repo's own evals/ corpus, explicitly not shipped — see repo CLAUDE.md's Repository Structure — and the repo-root eval runners (scripts/run-full-eval.sh, scripts/eval-changed.sh, scripts/run-ablation.sh) plus .github/workflows/agent-eval.yml all materialize evals/fixtures/evals/expected into .claude/evals/ via a $PWD-relative symlink before invoking this skill — meaningful only from this checkout's own root. The allowed-tools frontmatter above additionally hardcodes these bare strings as Bash permission patterns, which would stop matching if qualified.

Orchestrator constraints

  1. Do not review or design yourself. Delegate reviews to /review-agent and advisory analysis to the skill under eval (e.g. test-design-advisor). Your job is dispatching and grading.
  2. Grade deterministically. Compare agent JSON output against expected JSON using exact criteria (status match, count ranges, keyword checks). Do not apply judgment.
  3. Minimize context per agent. Pass only the fixture file to the agent — not the expected results, not other fixtures, not prior transcripts. One narrow exception: a test-review dispatch also receives its fixture's own test_review_mechanics.py mechanical pre-phase result (Step 3 below, #2169 follow-up) — computed from the fixture file itself, not from grading data, so it does not weaken this constraint's intent.
  4. Track results. Save transcripts for saturation detection. Do not modify fixtures or expected files.
  5. Be concise. Output the report table and failure details. No narration of each fixture run — just the grades.

Read the full file on GitHub · 582 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 24d ago Changed · +42 lines 5ab8124b2cc5
  2. 1mo ago First seen · 540 lines · 59 tokens per session scan B c55320b339e2

Subscribe to this mod's changes

agent-eval is a skill published in the GitHub repository bdfinst/agentic-dev-team (295 stars, last pushed 4d ago), licensed MIT. It adds 59 tokens to every session and 6,577 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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