auto-test-execution

auto-test-execution is a skill for Claude Code, Codex from jmagly/aiwg. It costs 23 tokens per session (558 once invoked), scanned A, original, MIT.

An automatic test-running skill for coding agents that modify source files. It finds related tests, runs them, and responds to failures before the agent reports completion.

In plain words
What is it for?
Selecting relevant tests, running the project’s test command, retrying debugging up to the configured limit, and reporting persistent failures.
Why use it?
It catches broken changes while the agent still has context to investigate and retry them.

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/jmagly/aiwg/auto-test-execution
Any agent
npx skills add jmagly/aiwg --skill auto-test-execution
Clone the repo
git clone --depth 1 https://github.com/jmagly/aiwg

Made for: Claude Code, 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 auto-test-execution

README.md
[![agentmods](https://agentmods.dev/badge/skills/jmagly/aiwg/auto-test-execution.svg)](https://agentmods.dev/skills/jmagly/aiwg/auto-test-execution)
Your own site
<a href="https://agentmods.dev/skills/jmagly/aiwg/auto-test-execution"><img src="https://agentmods.dev/badge/skills/jmagly/aiwg/auto-test-execution.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 558 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 5.1 $0.00023 $0.00558
Opus 5 $0.00012 $0.00279
Sonnet 5 $0.00005 $0.00112
Haiku 4.5 $0.00002 $0.00056

Measured 6d ago against content hash d85866fede1c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

auto-test-execution 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 6d 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.

agentic/code/addons/agent-loop/skills/auto-test-execution/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

auto-test-execution

Automatically execute tests when code-generating agents write to source files, enforcing the execute-before-return pattern.

Triggers

Primary phrases matched automatically from skill description. No additional alternate expressions defined.

Purpose

This skill enforces the MetaGPT executable feedback pattern: code-generating agents must execute tests before returning results to the user. It activates automatically when agents modify source code files.

Behavior

When triggered, this skill:

  1. Detect modified files:

    • Track which source files the agent has written to
    • Identify the relevant test framework
  2. Find related tests:

    • Look for test files matching the modified source
    • Convention: src/foo/bar.ts -> test/unit/foo/bar.test.ts
    • If no tests exist, prompt agent to generate them
  3. Execute tests:

    • Run the project's test command focused on relevant tests
    • Capture results: passed, failed, errors
  4. Handle results:

    • All pass: Allow agent to return results
    • Failures: Trigger debug-and-retry loop (max 3 attempts)
    • Persistent failures: Escalate with debug memory context
  5. Update debug memory:

    • Record session in .aiwg/ralph/debug-memory/sessions/
    • Extract patterns for future reference

Activation Conditions

activation:
  always_active_for:
    - software-implementer
    - debugger
    - test-engineer

  triggered_by:
    - file_write:
        patterns:
          - "src/**/*.ts"
          - "src/**/*.js"
          - "src/**/*.py"
          - "**/*.go"
          - "**/*.rs"

  skip_when:
    - test_files_only: true
    - documentation_only: true
    - configuration_only: true

Integration

This skill uses:

  • project-awareness: Detect test framework and configuration
  • Debug memory at .aiwg/ralph/debug-memory/ for pattern learning

References

  • @$AIWG_ROOT/agentic/code/frameworks/sdlc-complete/rules/executable-feedback.md - Feedback rules
  • @$AIWG_ROOT/agentic/code/addons/ralph/docs/executable-feedback-guide.md - Guide
  • @$AIWG_ROOT/agentic/code/addons/ralph/schemas/debug-memory.yaml - Memory schema
  • @.aiwg/research/findings/REF-013-metagpt.md - Research foundation

Read the full file on GitHub · 83 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. 6d ago First seen · 83 lines · 23 tokens per session scan A d85866fede1c

Subscribe to this mod's changes

auto-test-execution is a skill published in the GitHub repository jmagly/aiwg (209 stars, last pushed yesterday), licensed MIT. It adds 23 tokens to every session and 558 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.

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