dev-test

A test-running skill that executes the project's configured test command and records the result in a JSON file.

In plain words
What is it for?
Use it during development, while investigating a failing test, or before a quality check or pull request.
Why use it?
It gives later development checks a fresh, reusable record of whether the code passed its tests.

Skill for Claude CodeCodex

Part of the claude-code-dev-hermit plugin — 7 skills, 1 hook shipped together

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/gtapps/claude-code-hermit/dev-test
Any agent
npx skills add gtapps/claude-code-hermit --skill dev-test
Clone the repo
git clone --depth 1 https://github.com/gtapps/claude-code-hermit

Made for: Claude Code, Codex.

Or install claude-code-dev-hermit, the plugin that ships this one along with the rest of its 7 skills, 1 hook.

Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 406 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 $0.00406
Opus 5 $0.00032 $0.00203
Sonnet 5 $0.00013 $0.00081
Haiku 4.5 $0.00006 $0.00041

Measured 3d ago against content hash 100c3418090a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dev-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 3d 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.

plugins/claude-code-dev-hermit/skills/dev-test/SKILL.md · 39 lines

What it actually says

/dev-test

Run the project's configured test command and record the result.

Argument

Optional --cwd <path>. When set, the test command runs from <path> and last-test.json records <path>'s HEAD SHA. Use this for nested-repo workflows (see CLAUDE-APPEND §Implementation Flow). <path> must be a git working tree.

Plan

Run the following Bash command. Use timeout: 600000 (10-min ceiling). Append --cwd "<path>" when the operator passed --cwd.

bun "${CLAUDE_PLUGIN_ROOT}/scripts/record-test-result.ts" run

If exit 0: report tests: pass.

If exit 1 and stderr is "commands.test not configured": tell the operator to set commands.test in .claude-code-hermit/config.json (or re-run /claude-code-dev-hermit:hatch).

If exit non-zero for any other reason: report tests: FAIL (exit N) with the last 10 lines of output.

Notes

/dev-pr invokes the same machinery on cache miss — running /dev-test first is optional but warms the cache (a second /dev-pr call at the same HEAD skips the test run entirely).

For suites longer than 10 min (Bash ceiling): run the test command directly in a terminal, then record the result manually:

bun <CLAUDE_PLUGIN_ROOT>/scripts/record-test-result.ts write <exit_code> <duration_ms>

Then re-run /dev-pr.

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. 3d ago First seen · 39 lines · 64 tokens per session scan A 100c3418090a

Subscribe to this mod's changes

dev-test is a skill published in the GitHub repository gtapps/claude-code-hermit (73 stars, last pushed yesterday), licensed MIT. It adds 64 tokens to every session and 406 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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