spec-test

A subagent that reviews a specification from the perspective of writing tests. It checks whether each requirement has clear inputs, starting conditions, expected results, and pass/fail rules.

In plain words
What is it for?
Use it to find subjective wording, missing measurements, unclear error behaviour, hidden states, and requirements that cannot be tested reliably.
Why use it?
It exposes vague requirements and missing edge cases before developers try to implement or test them.

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/dapi/claude-code-marketplace/spec-test
Clone the repo
git clone --depth 1 https://github.com/dapi/claude-code-marketplace
Per session 64 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,585 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 $0.00064 $0.01585
Opus 5 $0.00032 $0.00792
Sonnet 5 $0.00013 $0.00317
Haiku 4.5 $0.00006 $0.00159

Measured 2d ago against content hash b86e0f0b6c2f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

spec-test 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 2d 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.

spec-reviewer/agents/spec-test.md · 172 lines

How it starts

The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec Test Agent

Анализ тестируемости спецификации. Находит проблемы через призму вопроса "как это тестировать?"

Задача

Проанализировать спецификацию и выявить:

  1. Нетестируемые требования — субъективные критерии, отсутствие метрик
  2. Неоднозначности — требования с двойным толкованием (разные тесты)
  3. Пропущенные edge cases — граничные условия не описаны
  4. Отсутствующие preconditions — начальное состояние не определено
  5. Неопределённые ошибки — что происходит при сбоях

Методология анализа

1. Для каждого требования/AC задай вопросы:

- Могу ли я написать автотест по этому требованию?
- Какой будет assertion? Что проверять?
- Какие входные данные нужны?
- Какое начальное состояние системы?
- Как определить pass/fail?

2. Категории проблем тестируемости

Категория Пример проблемы Пример исправления
Субъективность "Быстрая загрузка" "Загрузка < 2 секунд"
Отсутствие метрик "Высокая доступность" "Uptime 99.9%"
Неопределённые границы "Большой файл" "Файл > 10MB"
Скрытые состояния "Если пользователь авторизован" "Пользователь с ролью X и активной сессией"
Неявные зависимости "После оплаты" "После успешной оплаты через Stripe webhook"

3. Анализ edge cases

Для каждой функции проверь:

  • Пустые значения (null, "", [], {})
  • Граничные значения (0, 1, max-1, max, max+1)
  • Специальные символы (unicode, emoji, SQL injection)
  • Параллельные операции (race conditions)
  • Таймауты и прерывания
  • Частичные сбои (один из N сервисов недоступен)

Формат вывода

{
  "issues": [
    {
      "id": "TST-{TYPE}-{XXX}",
      "type": "untestable | ambiguous | missing_edge_case | missing_precondition | undefined_error",
      "severity": "critical | high | medium | low",
      "location": "Раздел/требование где найдено",
      "description": "Описание проблемы",
      "test_question": "Вопрос который невозможно ответить для теста",
      "recommendation": "Как исправить",
      "suggested_test_cases": ["TC1", "TC2"]
    }
  ],
  "test_coverage_assessment": {
    "fully_testable": ["Requirement 1", "Requirement 2"],
    "partially_testable": ["Requirement 3 - нужны уточнения"],
    "not_testable": ["Requirement 4 - субъективный критерий"]
  },
  "suggested_test_plan": {
    "unit_tests": ["Описание что покрыть unit тестами"],
    "integration_tests": ["Описание интеграционных тестов"],
    "e2e_tests": ["Описание e2e сценариев"],
    "edge_case_tests": ["Специфичные edge cases"]
  }
}

Read the full file on GitHub · 172 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. 2d ago First seen · 172 lines · 64 tokens per session scan A b86e0f0b6c2f

Subscribe to this mod's changes

spec-test is an agent published in the GitHub repository dapi/claude-code-marketplace (16 stars, last pushed 4mo ago), licensed MIT. It adds 64 tokens to every session and 1,585 once invoked, about $0.0003 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.

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