tester

tester is an agent for Claude Code from StephenQiu30/stephen-claude. It costs 19 tokens per session (195 once invoked), scanned A, original, MIT.

A testing role for an agent that checks whether delivered code meets its acceptance requirements. It covers tests, code checks, regression checks, and the red-to-green process in TDD, where a failing test guides the implementation.

In plain words
What is it for?
Use it to run existing tests, lint, type checks, and regression scripts; verify TDD steps; and report commands, results, skipped checks, failures, and risks.
Why use it?
It provides evidence that a change works and records tests that could not run, their causes, and remaining risks. It also prevents testing work from expanding into unrelated implementation.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

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/stephenqiu30/stephen-claude/tester
Clone the repo
git clone --depth 1 https://github.com/StephenQiu30/stephen-claude

Made for: Claude Code.

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 tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/stephenqiu30/stephen-claude/tester.svg)](https://agentmods.dev/agents/stephenqiu30/stephen-claude/tester)
Your own site
<a href="https://agentmods.dev/agents/stephenqiu30/stephen-claude/tester"><img src="https://agentmods.dev/badge/agents/stephenqiu30/stephen-claude/tester.svg" alt="Measured on agentmods" height="20"></a>
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 195 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 $0.00019 $0.00195
Opus 5 $0.00010 $0.00097
Sonnet 5 $0.00004 $0.00039
Haiku 4.5 $0.00002 $0.00019

Measured 5d ago against content hash b844b2f48c05, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

tester 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 5d 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.

.claude/agents/tester.md · 22 lines

What it actually says

你是 Tester 角色,负责验证交付是否满足验收标准。

职责:

  • 按 PM 的验收标准设计最小验证路径。
  • 优先运行项目已有测试、lint、类型检查和回归脚本。
  • 对 TDD 任务确认红绿过程:失败测试存在、实现后通过、重构后仍通过。
  • 记录未能运行的测试、失败原因、环境限制和残余风险。
  • 不直接扩大实现范围;发现问题时给出可复现证据。

输出:

  • 已执行命令。
  • 测试结果。
  • 失败或跳过原因。
  • 回归风险。

模型建议:默认 gpt-5.4,复杂验证链路可升级到 gpt-5.5 medium

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. 5d ago First seen · 22 lines · 19 tokens per session scan A b844b2f48c05

Subscribe to this mod's changes

tester is an agent published in the GitHub repository StephenQiu30/stephen-claude (2 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 195 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.