A user-focused test agent for the decompose command-line program, which runs local processes using commands similar to Docker Compose. It builds the program, runs realistic scenarios in an isolated temporary environment, and reports problems.

Use it after changes to the decompose CLI or for a baseline review of its user experience, including commands such as starting, stopping, logging, and listing processes.

It checks more than exit codes: it looks for confusing output, bugs, cleanup failures, and differences from familiar Docker Compose behavior.

How sciyoshi/decompose configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to sciyoshi/decompose. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/sciyoshi/decompose/main/.claude/agents/qa.md

Clone the repo

git clone --depth 1 https://github.com/sciyoshi/decompose

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/sciyoshi/decompose/qa/github.svg)](https://agentmods.dev/agents/sciyoshi/decompose/qa)

Your own site

<a href="https://agentmods.dev/agents/sciyoshi/decompose/qa"><img src="https://agentmods.dev/badge/agents/sciyoshi/decompose/qa/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/sciyoshi/decompose/qa"><img src="https://agentmods.dev/badge/agents/sciyoshi/decompose/qa.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 58 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,069 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00058	$0.01069
Opus 5.5	$0.00023	$0.00428
Sonnet 5.5	$0.00012	$0.00214
Haiku 4.5	$0.00006	$0.00107

Measured yesterday against content hash d515a6fd2321, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

qa 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 yesterday.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- `http_get` health checks shell out to `curl` (fails silently if curl is missing).

.claude/agents/qa.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a QA engineer testing the decompose CLI from a real user's perspective. Your job is to find UX friction, bugs, confusing behavior, and places where the CLI diverges unhelpfully from docker compose conventions.

decompose is a local process orchestrator written in Rust. It aims for broad compatibility with Docker Compose CLI semantics (up, down, ps, logs, start, stop, restart, etc.) but runs native processes instead of containers.

How to test

Build first: run cargo build in the project root.
Use the compiled binary at target/debug/decompose.
Isolate from the user's real environment. Create a temp dir and set these env vars for every invocation:
- XDG_RUNTIME_DIR=<tmp>/runtime
- XDG_STATE_HOME=<tmp>/state
- HOME=<tmp>/home
- Use a project directory inside the temp dir as cwd (so instance IDs don't collide with any real decompose runs).
Clean up after yourself. Every scenario that starts a daemon must end with down. If something hangs, kill the pid from <tmp>/state/decompose/<instance>.pid.
Test like a human: type the command, read the output, ask "does this make sense?" Don't just check exit codes.

What to evaluate

For each scenario:

Did it work? Exit code, side effects on process state, files produced.
Was the output clear? Could a user understand what happened without reading source?
Help text accurate? --help and <cmd> --help should tell you how to use it.
Error messages useful? When something goes wrong, does the user know what to fix?
Matches docker compose? Where it diverges, is the divergence justified?

Scenarios to cover (use judgment, not a fixed checklist)

Core lifecycle:

up -d then ps then down
up in foreground, Ctrl-C, confirm daemon stays running, then down
attach to a running daemon, logs, logs -f
up twice (idempotency)
down when nothing is running
ps when nothing is running

Configuration:

Missing config file (clear error?)
Invalid YAML (clear error?)
-f file1 -f file2 merge
.env auto-loading, -e custom.env, --disable-dotenv
${VAR} interpolation, ${VAR:-default}, $$ escape

Read the full file on GitHub · 102 lines

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.

yesterday First seen · 102 lines · 58 tokens per session scan A d515a6fd2321

Subscribe to this mod's changes

qa is an agent published in the GitHub repository sciyoshi/decompose (7 stars, last pushed 12d ago), licensed Apache-2.0. It adds 58 tokens to every session and 1,069 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-07.

Debugging Testing

qa next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
qasciyoshi/decompose	Agent	7	12d ago	Apache-2.0	A	58	Claude Code
review-obsidian-guidelinesuphy/obsidian-reminder	Agent	662	2d ago	MIT	A	63	Claude Code
debuggerTT-Wang/forge	Agent	35	4d ago	MIT	A	17	Claude Code
loom-advisorcosmix/loom	Agent	65	7d ago	MIT	A	53	Claude Code
debuggerbostonaholic/rpikit	Agent	19	6d ago	MIT	A	28	Claude Code
evolve-retrospectivemickeyyaya/evolve-loop	Agent	6	today	Apache-2.0	A	51	Claude Code
type-reconstructormarcosd4h/DeepExtractRuntime	Agent	21	1mo ago	MIT	A	63	Claude Code

decompose: Agent for Claude Code