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/huangruiteng/loopx/loopx-change-qualitynpx skills add huangruiteng/loopx --skill loopx-change-qualitygit clone --depth 1 https://github.com/huangruiteng/loopxWrote 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/huangruiteng/loopx/loopx-change-quality)<a href="https://agentmods.dev/skills/huangruiteng/loopx/loopx-change-quality"><img src="https://agentmods.dev/badge/skills/huangruiteng/loopx/loopx-change-quality.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 | $0.00075 | $0.01841 |
| Opus 5 | $0.00037 | $0.00920 |
| Sonnet 5 | $0.00015 | $0.00368 |
| Haiku 4.5 | $0.00007 | $0.00184 |
Grade A, and why
loopx-change-quality 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
LoopX Change Quality
Use this skill only when the selected goal's
change_quality_qualification.enabled policy is true. LoopX owns the canonical
source but does not install it globally. Install a managed copy in a connected
project for the relevant host:
loopx project-skill install \
--project . \
--skill loopx-change-quality \
--surface codex \
--execute
Use --surface claude-code or --surface opencode for those hosts. Skill
discovery does not activate the capability; product behavior remains
default-off until goal policy enables it.
The CLI is the contract authority. This skill supplies a host-neutral review workflow. Repository instructions, tests, linters, type checkers, and security checks remain the project's quality oracles.
Prepare The Exact Scope
From the repository worktree, run:
loopx --format json change-quality prepare \
--goal-id <goal-id> \
--repo-path . \
--base-ref origin/main
Stop when the packet says disabled or no_changes. When it says
review_required, review only the files and exact fingerprint in the packet.
Read repository-local instructions before judging the change.
Run loopx project-skill status --project . --skill loopx-change-quality when
the host depends on skill discovery. If the managed copy is absent or stale,
preview an explicit project install; do not fall back to a global copy.
Review Rules
Simplify First
Spend the review budget on simplification before broad quality analysis:
- Reuse an established helper or durable repository rule instead of copying behavior or knowledge.
- Remove redundant state, parameters, branches, indirection, and speculative abstraction while preserving behavior.
- Challenge a private helper or wrapper when it is only one to three lines, has at most two production callers, and owns no independent domain invariant, effect, or error boundary.
- Prefer the smallest coherent edit that leaves ownership and intent clearer. Do not create churn when the current shape is already direct and cohesive.
What ships with it
2 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.
- 4d ago First seen · 204 lines · 75 tokens per session scan A 925963bb3ae8
loopx-change-quality is a skill published in the GitHub repository huangruiteng/loopx (5,548 stars, last pushed today), licensed Apache-2.0. It adds 75 tokens to every session and 1,841 once invoked, about $0.0004 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 2026-08-30.
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