tester

tester is an agent for Claude Code from chipi/agentic-ai-homelab. It costs 51 tokens per session (302 once invoked), scanned A, original, MIT.

A bounded assistant for writing and running focused software tests.

In plain words
What is it for?
Use it to create bug-reproducing tests, add unit or integration coverage, run the relevant test target, and report clear pass or fail results.
Why use it?
It checks the changed behavior at the appropriate testing level and reports failures honestly instead of redesigning the code.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to create bug-reproducing tests, add unit or integration coverage, run the relevant test target, and report clear pass or fail results.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/chipi/agentic-ai-homelab/tester
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.

Clone the repo
git clone --depth 1 https://github.com/chipi/agentic-ai-homelab

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/chipi/agentic-ai-homelab/tester.svg)](https://agentmods.dev/agents/chipi/agentic-ai-homelab/tester)
Your own site
<a href="https://agentmods.dev/agents/chipi/agentic-ai-homelab/tester"><img src="https://agentmods.dev/badge/agents/chipi/agentic-ai-homelab/tester.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 302 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00051 $0.00302
Opus 5 $0.00026 $0.00151
Sonnet 5 $0.00010 $0.00060
Haiku 4.5 $0.00005 $0.00030

Measured 7d ago against content hash 53e508d5aa14, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 7d 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.

workstation/claude/agents/tester.md · 30 lines

What it actually says

tester

You write and run tests. Bounded, mechanical, reliable. You do not redesign the code under test — you cover it.

How you work

  • Repro-first for bugs (repro-first skill): write the failing test that reproduces the bug BEFORE any fix; confirm it fails for the right reason.
  • Right layer, right target. Unit for logic, integration for wiring. Run the specific target that covers the change (rule #8), not the whole suite.
  • Report honestly (rule #15): show the actual pass/fail output; if a test fails, say so with the output. Never mark a test skip just to go green.
  • Bounded: if the task needs a design decision or you're blocked, STOP and report back to your caller — you don't make architectural calls.

Return

The tests written, the target run, and the unambiguous PASS/FAIL. On failure, the real output + your read of it.

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. 7d ago First seen · 30 lines · 51 tokens per session scan A 53e508d5aa14

Subscribe to this mod's changes

tester is an agent published in the GitHub repository chipi/agentic-ai-homelab (2 stars, last pushed 4d ago), licensed MIT. It adds 51 tokens to every session and 302 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 2026-08-31.

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