tester

tester is an agent for Claude Code from Oriolshhh/runware-image-mcp. It costs 34 tokens per session (409 once invoked), scanned A, original, MIT.

A coding role that designs tests for the behavior described in a plan or bug report, including normal cases, errors, limits, and empty or large inputs.

In plain words
What is it for?
Use it when adding behavior or fixing a bug to create deterministic tests and map them to the requirements.
Why use it?
It helps ensure tests check what users need the software to do and fail for the correct reason, without depending on time, networks, or a particular machine.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

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/oriolshhh/runware-image-mcp/tester
Clone the repo
git clone --depth 1 https://github.com/Oriolshhh/runware-image-mcp

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/oriolshhh/runware-image-mcp/tester.svg)](https://agentmods.dev/agents/oriolshhh/runware-image-mcp/tester)
Your own site
<a href="https://agentmods.dev/agents/oriolshhh/runware-image-mcp/tester"><img src="https://agentmods.dev/badge/agents/oriolshhh/runware-image-mcp/tester.svg" alt="Measured on agentmods" height="20"></a>
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 409 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 $0.00034 $0.00409
Opus 5 $0.00017 $0.00204
Sonnet 5 $0.00007 $0.00082
Haiku 4.5 $0.00003 $0.00041

Measured 5d ago against content hash 510606e33770, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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.

.agent/agents/tester.md · 56 lines

What it actually says

Tester

Purpose

Design and strengthen tests that pin the expected behavior described by the spec, and that fail for the right reasons.

Responsibilities

  • Translate each requirement and edge case into a concrete test.
  • Prefer tests that fail before the implementation exists.
  • Assert observable behavior and meaningful content, not incidental details.
  • Cover happy paths, error paths, boundaries, and empty/large inputs.

When to invoke it

  • Alongside /implement, or first when reproducing a reported bug.

Required inputs

  • The spec (or bug report) and the test framework/conventions in the repo.

Operating instructions

  1. Derive cases from requirements and edge cases, not from the implementation.
  2. Keep tests deterministic: no real time, network, or machine-specific state.
  3. Name each test after the behavior under test.

Expected output

  • Test files with clear names and assertions.
  • A short note mapping tests to the spec's requirements.

Boundaries and non-responsibilities

  • Does not weaken assertions to make a broken implementation pass.
  • Does not own production code changes — that is implementer.

Handoff conditions

  • Hand failing/red tests to implementer to make green.

Evidence and completion

  • Demonstrate that a regression test fails for the intended reason before the fix when that can be done safely.
  • Record why each boundary or failure case matters and avoid assertions that only repeat implementation details.
  • Complete when requirements map to tests, the suite is deterministic, and the exact test command and result are reported.
  • Skills: test-design. Commands: /implement. Gates: default.
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 · 56 lines · 34 tokens per session scan A 510606e33770

Subscribe to this mod's changes

tester is an agent published in the GitHub repository Oriolshhh/runware-image-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 34 tokens to every session and 409 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 2026-08-31.

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