enforce-first

A test-review checklist based on the F.I.R.S.T. principles: Fast, Independent, Repeatable, Self-Validating, and Timely. It checks whether tests are dependable and useful.

In plain words
What is it for?
Use it to review a whole test suite or individual tests, especially while practising test-driven development (TDD), where tests guide implementation.
Why use it?
It helps find weak tests and requires linting, type checks, tests, and coverage checks to pass before release. This reduces the risk of declaring code ready when its tests are incomplete.

Skill for Claude CodeCodex

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 skills/danielvm-git/bigpowers/enforce-first
Any agent
npx skills add danielvm-git/bigpowers --skill enforce-first
Clone the repo
git clone --depth 1 https://github.com/danielvm-git/bigpowers

Made for: Claude Code, Codex.

Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 470 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 $0.00062 $0.00470
Opus 5 $0.00031 $0.00235
Sonnet 5 $0.00012 $0.00094
Haiku 4.5 $0.00006 $0.00047

Measured 2d ago against content hash 16ecdae179b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

enforce-first 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.

.cline/skills/enforce-first/SKILL.md · 46 lines

What it actually says

Enforce FIRST

HARD GATEHARD GATE — Before shipping, ALL enforcement checks must pass: lint, typecheck, tests, coverage gates. Do NOT disable or skip checks to get to green.

Apply the F.I.R.S.T rubric per CONVENTIONS.md §Tests to evaluate and improve tests.

This skill is typically invoked internally by develop-tdd during the test-writing phase. It can also be run standalone on an existing test suite.

Modes

  • Default: full F.I.R.S.T audit (all 5 criteria)
  • --quick: Check Fast, Independent, and Self-Validating criteria only (per CONVENTIONS.md §Tests). Used by build-epic step 6 as a mechanical gate after audit-code. Skips Repeatable and Timely which require contextual judgment.

The F.I.R.S.T Rubric

See CONVENTIONS.md §Tests for the canonical F.I.R.S.T rubric definition, checklists, and fix patterns.

Mechanical self-check (runs before reporting audit complete):

grep -q '## Tests (F.I.R.S.T' CONVENTIONS.md
grep -qE 'Fast|Independent|Repeatable|Self-Validating|Timely' CONVENTIONS.md

Each criterion must be explicitly addressed in the audit report with pass/fail per test file reviewed.

Applying the rubric

For each failing criterion:

  1. Identify which tests violate it
  2. Describe the fix
  3. Apply the fix
  4. Re-run the suite to confirm it still passes

Report: "F.I.R.S.T audit complete. X criteria passed, Y fixed."

Verify

→ verify: grep -q '## Tests (F.I.R.S.T' CONVENTIONS.md && grep -qE 'Self-Validating|Repeatable' skills/enforce-first/SKILL.md && echo OK

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 · 46 lines · 62 tokens per session scan A 16ecdae179b8

Subscribe to this mod's changes

enforce-first is a skill published in the GitHub repository danielvm-git/bigpowers (156 stars, last pushed 25d ago), licensed MIT. It adds 62 tokens to every session and 470 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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