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.
npx agentmods add skills/akaszubski/autonomous-dev/testing-guidenpx skills add akaszubski/autonomous-dev --skill testing-guidegit clone --depth 1 https://github.com/akaszubski/autonomous-devWrote 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.
[](https://agentmods.dev/skills/akaszubski/autonomous-dev/testing-guide)<a href="https://agentmods.dev/skills/akaszubski/autonomous-dev/testing-guide"><img src="https://agentmods.dev/badge/skills/akaszubski/autonomous-dev/testing-guide.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00074 | $0.06919 |
| Opus 5 | $0.00037 | $0.03460 |
| Sonnet 5 | $0.00015 | $0.01384 |
| Haiku 4.5 | $0.00007 | $0.00692 |
Grade A, and why
testing-guide scanned grade A with 1 finding 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
return subprocess.CompletedProcess( 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.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 641 lines · 74 tokens per session scan A 2e54cfb80ef5
testing-guide is a skill published in the GitHub repository akaszubski/autonomous-dev (34 stars, last pushed yesterday), with no licence file. It adds 74 tokens to every session and 6,919 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
testing-principles
Language-agnostic testing principles including TDD, test quality, coverage standards, and test design patterns. Use when writing tests, designing test strategies, or reviewing test quality.
unbiased-review
Use when reviewing a spec, plan, or implementation produced by another session - verifies its claims against the actual repo, grades TDD and hexagonal discipline, and reports severity-ranked findings without writing the fix. Triggers on "review this spec/plan/implementation", "second opinion on", "check this design"…
tdd
Use when the plan-review verdict is PROCEED (or plan-review is disabled) and code has not yet been written. Writes RED tests first, defining the contract Builder must satisfy. The mandatory hop before any implementation.
testing-new-code
Use when adding or modifying business logic, branching code, public API, or fixing a bug in a repo using repo-hygiene — tests for the new code paths must exist before the change is committed, not "later" or "if the user asks".
sw-build
TDD implementation of one work unit. Delegates test writing to the tester agent and implementation to the executor agent. Commits per task.
open-draft-pr
Prepare local changes for review with an intentional commit, push, and ready PR for fallow. Use when the user wants to publish work, open a PR, or turn local changes into a reviewable branch.