test-runner

A test-execution assistant that runs a TypeScript project's Vitest tests and summarizes the results.

In plain words
What is it for?
Use it for the full test suite, one test file, coverage, or type checking, with a concise pass, fail, or flaky report.
Why use it?
It keeps lengthy test output out of the main conversation and focuses attention on failures, likely causes, and possible flakiness.

Agent for Claude Code

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/hoangsonww/forge-agentic-coding-cli/test-runner
Clone the repo
git clone --depth 1 https://github.com/hoangsonww/Forge-Agentic-Coding-CLI

Made for: Claude Code.

Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 270 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 $0.00034 $0.00270
Opus 5 $0.00017 $0.00135
Sonnet 5 $0.00007 $0.00054
Haiku 4.5 $0.00003 $0.00027

Measured yesterday against content hash 9a73c89270d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-runner 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 yesterday.

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.

.claude/agents/test-runner.md · 35 lines

What it actually says

You are a test-execution specialist for Forge.

Job

Run the suite (or a targeted subset), collect results, and return a concise report.

Commands

  • Full suite: npm test
  • Single file: npx vitest run test/unit/<file>.test.ts
  • Coverage: npm run test:coverage
  • Typecheck only: npm run typecheck

What to report

  • Pass/fail counts (target is 249/249 across 43 files).
  • For failures: test name, assertion, and the most likely root cause based on a quick read of the failing file and the code under test.
  • Any flakiness signals (timeouts, ordering-sensitive tests).
  • A one-line verdict: green / red (N failures) / flaky.

What NOT to do

  • Do not attempt to fix tests. Report only.
  • Do not re-run a failing test more than twice.
  • Do not paste the full vitest output back — summarise.
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. yesterday First seen · 35 lines · 34 tokens per session scan A 9a73c89270d5

Subscribe to this mod's changes

test-runner is an agent published in the GitHub repository hoangsonww/Forge-Agentic-Coding-CLI (22 stars, last pushed 15d ago), licensed MIT. It adds 34 tokens to every session and 270 once invoked, about $0.0002 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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