test-value

test-value is a skill for Codex from tt-a1i/archify. It costs 55 tokens per session (1,682 once invoked), scanned A, original, MIT.

A guide for assessing the value and cost of software tests. It covers slow, flaky, redundant, brittle, failing, or newly changed tests within an authorised scope.

In plain words
What is it for?
Use it when auditing tests, choosing tests during implementation, reviewing test changes, or diagnosing why a test failed.
Why use it?
It helps distinguish useful protection from noisy or expensive checks, without treating test counts, coverage percentages, or green runs as proof of quality.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it when auditing tests, choosing tests during implementation, reviewing test changes, or diagnosing why a test failed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tt-a1i/archify/test-value
About the project

Archify is a system that turns codebases or system descriptions into interactive architecture, workflow, sequence, data-flow, and lifecycle diagrams. Developers use it to inspect, review, compare, and share system designs, while its catalogue skill provides the agent workflow for creating and validating those diagrams.

tt-a1i/archify · 84,044 stars · on GitHub · archify.si

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.

Any agent
npx skills add tt-a1i/archify --skill test-value
Clone the repo
git clone --depth 1 https://github.com/tt-a1i/archify

Made for: Codex.

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 test-value

README.md
[![agentmods](https://agentmods.dev/badge/skills/tt-a1i/archify/test-value/github.svg)](https://agentmods.dev/skills/tt-a1i/archify/test-value)
Your own site
<a href="https://agentmods.dev/skills/tt-a1i/archify/test-value"><img src="https://agentmods.dev/badge/skills/tt-a1i/archify/test-value/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 test-value

Your own site · 80×15
<a href="https://agentmods.dev/skills/tt-a1i/archify/test-value"><img src="https://agentmods.dev/badge/skills/tt-a1i/archify/test-value.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,682 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 $0.00055 $0.01682
Opus 5.5 $0.00022 $0.00673
Sonnet 5.5 $0.00011 $0.00336
Haiku 4.5 $0.00006 $0.00168

Measured 2d ago against content hash a47f7d9c739c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-value 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.

.agents/skills/test-value/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Test Value

Protect outcomes worth preserving at a cost proportionate to their risk. Test counts, coverage percentages and green runs are evidence, not substitutes for product judgment. When an AI writes both implementation and tests, check whether they share the same mistaken assumption.

Choose the scope

Preserve the user's existing authorization and operational boundaries.

  • Audit existing tests: investigate cost, false alarms and protection within the requested scope. An audit request is read-only; an optimization request permits scoped changes. Read audit.md.
  • Implementation or pre-commit review: examine the behavior being changed and its affected tests. Decide whether to add, adapt, reuse or remove tests. Reviewing before a commit does not itself authorize committing or pushing.
  • Diagnose a failure: identify the outcome the failing check protects, then distinguish a product regression, obsolete assertion, environment failure or unstable test. Keep a narrowly requested fix narrow.

Read decision-examples.md when dealing with automatic-layout snapshots, shared matrices, source assertions, asynchronous waits, test doubles, benchmarks or coverage gaps.

Establish an independent basis for correctness

Explain what must remain true using user requirements, public contracts, compatibility commitments or a real failure. The current implementation and its own generated output cannot, by themselves, establish the correct expectation.

For tests being added or changed, answer three questions in the reasoning or a short change explanation:

  1. Which concrete mistake would fail this test, and what loss would it cause a user or maintainer?
  2. Would an equivalent refactor or a better valid result also fail? Which restrictions are actually contractual?
  3. Which existing test, type check or other check already catches this mistake? Does the additional protection justify its execution and maintenance cost?

Read the full file on GitHub · 93 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 93 lines · 55 tokens per session scan A a47f7d9c739c

Subscribe to this mod's changes

test-value is a skill published in the GitHub repository tt-a1i/archify (84,044 stars, last pushed today), licensed MIT. It adds 55 tokens to every session and 1,682 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 2026-10-14.

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