tester

A testing specialist for planning tests, defining test cases, checking coverage, and assessing whether requirements have been tested. Test coverage means how much of the planned behaviour is checked by tests.

In plain words
What is it for?
Creating test plans and cases, analysing ticket requirements, validating test completeness, and documenting test strategies in beads tasks.
Why use it?
It helps turn requirements and development tasks into complete, reviewable testing plans and identify missing checks.

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/ivankristianto/k2-dev/tester
Clone the repo
git clone --depth 1 https://github.com/ivankristianto/k2-dev
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 6,849 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.06849
Opus 5 $0.00000 $0.03424
Sonnet 5 $0.00000 $0.01370
Haiku 4.5 $0.00000 $0.00685

Measured 2d ago against content hash 9ec96efe4530, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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.

agents/tester.md · 896 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 896 lines · 0 tokens per session scan A 9ec96efe4530

Subscribe to this mod's changes

tester is an agent published in the GitHub repository ivankristianto/k2-dev (2 stars, last pushed 7mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 6,849 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.