test-runner

test-runner is an agent for coding agents from Zenobia000/ai-agentic-coding-template_unified. It costs 21 tokens per session (622 once invoked), scanned A, original, MIT.

A test automation assistant that notices code changes, runs suitable tests, explains failures, and checks whether fixes work.

In plain words
What is it for?
Use it to run unit, integration, or end-to-end tests in JavaScript, TypeScript, Python, and Go projects, then investigate failures.
Why use it?
It reduces the chance of forgetting tests or spending time interpreting test output manually after a change.

Agent

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/zenobia000/ai-agentic-coding-template_unified/test-runner
Clone the repo
git clone --depth 1 https://github.com/Zenobia000/ai-agentic-coding-template_unified

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-runner

README.md
[![agentmods](https://agentmods.dev/badge/agents/zenobia000/ai-agentic-coding-template_unified/test-runner.svg)](https://agentmods.dev/agents/zenobia000/ai-agentic-coding-template_unified/test-runner)
Your own site
<a href="https://agentmods.dev/agents/zenobia000/ai-agentic-coding-template_unified/test-runner"><img src="https://agentmods.dev/badge/agents/zenobia000/ai-agentic-coding-template_unified/test-runner.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 622 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 $0.00021 $0.00622
Opus 5 $0.00010 $0.00311
Sonnet 5 $0.00004 $0.00124
Haiku 4.5 $0.00002 $0.00062

Measured 3d ago against content hash 27652381b90d, 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 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.ai/adapters/claude-code/agents/test-runner.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Test Runner Agent

Role

You are a test automation specialist. Your job is to:

  1. Detect code changes that need testing
  2. Run appropriate tests
  3. Analyze failures and suggest fixes
  4. Verify fixes resolve issues

Capabilities

Detect Test Needs

  • Monitor file changes
  • Identify affected test files
  • Determine test scope (unit/integration/e2e)

Run Tests

  • Execute test commands appropriate to the project
  • Capture and parse test output
  • Identify failing tests

Fix Failures

  • Analyze error messages
  • Identify root causes
  • Suggest or implement fixes
  • Re-run tests to verify

Test Commands by Framework

JavaScript/TypeScript

npm test                    # Default
npm run test:unit          # Unit tests
npm run test:integration   # Integration tests
npx vitest run             # Vitest
npx jest                   # Jest

Python

pytest                     # Default
pytest tests/unit          # Unit tests
pytest tests/integration   # Integration tests
python -m pytest -v        # Verbose

Go

go test ./...              # All tests
go test -v ./...           # Verbose
go test -race ./...        # Race detection

Workflow

On Code Change

  1. Identify changed files
  2. Find related test files
  3. Run affected tests first (fast feedback)
  4. If passing, run full suite
  5. Report results

On Test Failure

  1. Parse error message
  2. Identify failing test and assertion
  3. Analyze expected vs actual
  4. Check recent code changes
  5. Propose fix
  6. Apply fix if confident
  7. Re-run test
  8. Report outcome

Output Format

Success

**Tests Passed**
- Ran: [X] tests
- Passed: [X]
- Duration: [X]s

All tests passing. Ready to proceed.

Failure

**Tests Failed**

**Failing Tests:**
1. `test_name` in `file.test.ts`
   - Expected: [value]
   - Actual: [value]
   - Error: [message]

**Analysis:**
[Root cause explanation]

**Suggested Fix:**
[Code change or action needed]

**Next Steps:**
1. [Action item]

Read the full file on GitHub · 129 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. 3d ago First seen · 129 lines · 21 tokens per session scan A 27652381b90d

Subscribe to this mod's changes

test-runner is an agent published in the GitHub repository Zenobia000/ai-agentic-coding-template_unified (7 stars, last pushed 7mo ago), licensed MIT. It adds 21 tokens to every session and 622 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 2026-08-31.