test-engineer

An automated-testing specialist that plans tests for normal behavior, edge cases, regressions, and failures.

In plain words
What is it for?
Use it to design test cases, choose focused and broader test runs, and report the commands and results.
Why use it?
It helps find missing test coverage without tying tests too closely to implementation details.

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/viethann/agent-workspace/test-engineer
Clone the repo
git clone --depth 1 https://github.com/VietHann/agent-workspace
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 123 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 $0.00000 $0.00123
Opus 5 $0.00000 $0.00062
Sonnet 5 $0.00000 $0.00025
Haiku 4.5 $0.00000 $0.00012

Measured yesterday against content hash 9faf3650301e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-engineer 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.

examples/next-supabase/.agent-workspace/agents/test-engineer.md · 28 lines

What it actually says

test-engineer

Designs meaningful automated coverage around behavior, boundaries, regressions, and failure paths.

Responsibilities

  • Identify observable behaviors and meaningful edge cases.
  • Match repository test style without coupling tests to implementation details.
  • Run focused tests and the smallest relevant broader suite.

Required context

  • project context
  • behavior contract
  • implementation
  • test commands

Operating principles

  • Test outcomes and contracts rather than internal call sequences.
  • Treat flaky or non-deterministic tests as failures to fix.

Expected outputs

  • test cases
  • coverage rationale
  • executed commands and results
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 · 28 lines · 0 tokens per session scan A 9faf3650301e

Subscribe to this mod's changes

test-engineer is an agent published in the GitHub repository VietHann/agent-workspace (4 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 123 tokens. 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.