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 skills add majiayu000/claude-skill-registry --skill ac-stop-hook-analyzer-adaptationio-skrillz-3git clone --depth 1 https://github.com/majiayu000/claude-skill-registryWrote 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/majiayu000/claude-skill-registry/ac-stop-hook-analyzer-adaptationio-skrillz-3)<a href="https://agentmods.dev/skills/majiayu000/claude-skill-registry/ac-stop-hook-analyzer-adaptationio-skrillz-3"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/ac-stop-hook-analyzer-adaptationio-skrillz-3/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.
<a href="https://agentmods.dev/skills/majiayu000/claude-skill-registry/ac-stop-hook-analyzer-adaptationio-skrillz-3"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/ac-stop-hook-analyzer-adaptationio-skrillz-3.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00039 | $0.00192 |
| Opus 5 | $0.00019 | $0.00096 |
| Sonnet 5 | $0.00008 | $0.00038 |
| Haiku 4.5 | $0.00004 | $0.00019 |
Grade A, and why
ac-stop-hook-analyzer 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 13d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- ac-stop-hook-analyzer — 100% identical, 0 lines differ
What it actually says
AC Stop Hook Analyzer
Analyze context to decide on continuation (Two-Claude Pattern).
Purpose
Implements the Analyzer role in the Two-Claude Pattern, using Opus 4.5 to intelligently decide whether to continue autonomous operation.
Quick Start
from scripts.stop_hook_analyzer import StopHookAnalyzer
analyzer = StopHookAnalyzer(project_dir)
decision = await analyzer.should_continue()
# Returns: {"decision": "block", "reason": "Continue with api-003"}
Decision Logic
- Check completion against objective
- Analyze remaining features
- Validate safety limits
- Return continue/stop decision
API Reference
See scripts/stop_hook_analyzer.py for full implementation.
What ships with it
1 file 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.
- 13d ago First seen · 34 lines · 39 tokens per session scan A 8e9b9b5ed9d4
ac-stop-hook-analyzer is a skill published in the GitHub repository majiayu000/claude-skill-registry (604 stars, last pushed yesterday), licensed MIT. It adds 39 tokens to every session and 192 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 2026-08-30.
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