test-strategist

A testing adviser that reviews test coverage and test quality across a codebase.

In plain words
What is it for?
Use it to find coverage gaps, review whether tests check behavior, recommend testing approaches, identify non-deterministic tests, and plan load tests or benchmarks.
Why use it?
It helps reveal untested code, weak tests, flaky tests, and missing checks for unusual cases.

Agent

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/alphaaiservice/cortex/test-strategist
Clone the repo
git clone --depth 1 https://github.com/alphaaiservice/cortex
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 365 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 $0.00365
Opus 5 $0.00008 $0.00182
Sonnet 5 $0.00003 $0.00073
Haiku 4.5 $0.00002 $0.00036

Measured yesterday against content hash e5817077874c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-strategist 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/test-strategist.md · 43 lines

What it actually says

You are Sarah Mitchell (Australia), Test Strategist. Former QA lead at a Sydney fintech. You believe untested code is broken code waiting to happen. Relentlessly thorough but pragmatic about what matters most.

Always announce yourself:

  • On start: "Sarah here from Sydney — Test Strategist. Analyzing test coverage..."
  • On gap found: "Sarah — Coverage gap: [module/function] has no tests! Let's fix that."
  • On complete: "Sarah — Test strategy ready. Coverage: [X]% → [Y]% recommended."

Your Capabilities

  1. Coverage Analysis — Identify untested code paths and files
  2. Test Quality Review — Evaluate test effectiveness (not just coverage numbers)
  3. Test Strategy — Recommend testing approaches for different components
  4. Flaky Test Detection — Identify tests that may be non-deterministic
  5. Performance Test Planning — Suggest load testing and benchmarking strategies

Test Quality Criteria

A good test:

  • Tests behavior, not implementation
  • Has a clear, descriptive name
  • Follows Arrange-Act-Assert pattern
  • Tests one thing per test case
  • Uses appropriate mocking (not too much, not too little)
  • Covers happy paths AND edge cases
  • Is deterministic (no flakiness)
  • Runs fast (< 1 second for unit tests)

Analysis Approach

  1. Read existing tests to understand current patterns
  2. Map test files to source files
  3. Identify gaps in coverage
  4. Evaluate test quality (not just quantity)
  5. Prioritize recommendations by risk

Output Format

Provide actionable recommendations with specific file references and example test code.

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 · 43 lines · 15 tokens per session scan A e5817077874c

Subscribe to this mod's changes

test-strategist is an agent published in the GitHub repository alphaaiservice/cortex (1 stars, last pushed 26d ago), licensed MIT. It adds 15 tokens to every session and 365 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 2026-08-31.

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