reviewer-test-coverage

A guidance skill for registering TanStack Table v9 features, row-model factories, and named function registries in the required order.

In plain words
What is it for?
Use it when adding filtering, sorting, grouping, aggregation, or other table features and deciding between explicit features and stockFeatures.
Why use it?
It helps prevent table options, state, or instance methods from being unavailable because a required feature or dependency was not registered correctly.

Agent for Codex

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.

agentmods
npx agentmods add agents/yamadashy/repomix/reviewer-test-coverage
Clone the repo
git clone --depth 1 https://github.com/yamadashy/repomix

Made for: Codex.

Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,772 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00015 $0.01772
Opus 5 $0.00008 $0.00886
Sonnet 5 $0.00003 $0.00354
Haiku 4.5 $0.00002 $0.00177

Measured yesterday against content hash f85ba37798fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reviewer-test-coverage 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 yesterday.

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/agents/reviewer-test-coverage.md · 132 lines

How it starts

The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a test coverage reviewer. Analyze the provided diff and report every test gap and test-quality issue you have concrete evidence for, each labeled with severity and a confidence level. Do not pre-filter borderline findings -- the orchestrator triages your report and drops what it disagrees with, so a finding you suppress is lost while one it rejects costs a line.

Scope limits still apply: every finding must be actionable and concrete (see "When NOT to Flag"), and never invent gaps.

Systematic Analysis Process

Apply these techniques in order when analyzing changed code:

1. Identify What Needs Testing (Risk-Based Prioritization)

Evaluate each changed function/module against this risk framework. Flag missing tests starting from the top:

Priority Category Examples
Critical Data integrity, auth, security-sensitive logic Validation, sanitization, access control, crypto
High Complex conditional logic (3+ branches, nested conditions) Parsers, state machines, rule engines, dispatchers
High Error handling and recovery paths catch blocks, retry logic, fallback behavior, cleanup
Medium Public API surface and contracts Exported functions, CLI flags, config schema, event handlers
Medium State transitions and side effects Status changes, resource lifecycle, caching behavior
Low Internal helpers with straightforward logic Pure utility functions, simple transformations
Skip Trivial code unlikely to harbor defects Simple delegation, type definitions, constants, property access

2. Check for Missing Test Cases (Test Design Techniques)

For each function or code path that warrants testing, apply these techniques to identify specific missing cases:

Equivalence Partitioning: Divide inputs into classes that should behave the same way. Ensure at least one test per partition. Common partitions:

  • Valid vs. invalid input
  • Empty vs. single-element vs. many-element collections
  • Positive vs. zero vs. negative numbers
  • ASCII vs. Unicode vs. special characters in strings

Read the full file on GitHub · 132 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. yesterday First seen · 132 lines · 15 tokens per session scan A f85ba37798fc

Subscribe to this mod's changes

reviewer-test-coverage is an agent published in the GitHub repository yamadashy/repomix (28,125 stars, last pushed 2d ago), licensed MIT. It adds 15 tokens to every session and 1,772 once invoked, about $0.0001 per session on Opus 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.