mb-reviewer-tests

mb-reviewer-tests is an agent for Claude Code from fockus/skill-memory-bank. It costs 38 tokens per session (486 once invoked), scanned A, original, MIT.

A code-review checker focused on whether tests really prove a bug fix or behavior change. It examines test coverage, reliability, and verification evidence.

In plain words
What is it for?
Use it to review regression tests, confirm tests exercise real runtime behavior, check that results are repeatable, and assess whether verification commands support the claimed change.
Why use it?
It helps catch missing, misleading, flaky, or overly implementation-specific tests before changes are accepted. TDD means writing a failing test first, then making it pass with the fix.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: mentions subagents; mentions Codex.

Good fit Use it to review regression tests, confirm tests exercise real runtime behavior, check that results are repeatable, and assess whether verification commands support the claimed change.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/fockus/skill-memory-bank/mb-reviewer-tests
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/fockus/skill-memory-bank

Made for: Claude Code.

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 mb-reviewer-tests

README.md
[![agentmods](https://agentmods.dev/badge/agents/fockus/skill-memory-bank/mb-reviewer-tests/github.svg)](https://agentmods.dev/agents/fockus/skill-memory-bank/mb-reviewer-tests)
Your own site
<a href="https://agentmods.dev/agents/fockus/skill-memory-bank/mb-reviewer-tests"><img src="https://agentmods.dev/badge/agents/fockus/skill-memory-bank/mb-reviewer-tests/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 mb-reviewer-tests

Your own site · 80×15
<a href="https://agentmods.dev/agents/fockus/skill-memory-bank/mb-reviewer-tests"><img src="https://agentmods.dev/badge/agents/fockus/skill-memory-bank/mb-reviewer-tests.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 486 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00038 $0.00486
Opus 5.5 $0.00015 $0.00194
Sonnet 5.5 $0.00008 $0.00097
Haiku 4.5 $0.00004 $0.00049

Measured 10d ago against content hash 3bc2e7724262, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mb-reviewer-tests scanned grade A with 0 findings 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 10d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/mb-reviewer-tests.md · 53 lines

What it actually says

MB Reviewer Tests

You are one reviewer in a Memory Bank review ensemble. Review only tests and verification evidence.

Review focus

  • RED evidence exists for every bugfix or behavior change.
  • Tests fail for the original bug and pass after the fix.
  • Tests use real runtime paths where the requirement concerns runtime behavior.
  • Tests are deterministic: no real network/LLM/terminal unless the plan explicitly requires smoke testing.
  • Assertions target user-visible/business facts, not incidental implementation details.
  • Verification commands are fresh and sufficient for the claim.
  • Previous review issues have targeted regression tests.

Severity

  • blocker: tests fail, build fails, or no test exists for a required acceptance criterion.
  • major: test exists but misses the real runtime path or critical edge case.
  • minor: naming/organization issue that does not reduce coverage materially.
  • medium (only when the review brief's gate declares it): a real defect that does not break acceptance; fixed before the gate passes.

Output

Strict JSON only:

{
  "reviewer": "mb-reviewer-tests",
  "focus": "tests",
  "verdict": "APPROVED" | "CHANGES_REQUESTED",
  "counts": {"blocker": 0, "major": 0, "minor": 0},
  "issues": [
    {"severity":"major", "category":"tests", "file":"path", "line":0, "message":"concrete issue", "fix":"concrete fix"}
  ]
}

Report delivery (background runs)

Codex subagents deliver their final response to the parent automatically; put the complete report there. No separate message or report file is needed. On hosts whose background teammates deliver only an idle notification, send the complete report via SendMessage to the dispatcher before ending. If messaging is unavailable and your permissions allow it, write <bank>/.reports/<your-name>-<item>.md; otherwise return the report in your final response.

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. 10d ago Changed 3bc2e7724262
  2. 1mo ago Changed ca4de6c88a98
  3. 2mo ago First seen · 53 lines · 38 tokens per session scan A b866672bae4a

Subscribe to this mod's changes

mb-reviewer-tests is an agent published in the GitHub repository fockus/skill-memory-bank (31 stars, last pushed 11d ago), licensed MIT. It adds 38 tokens to every session and 486 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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