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 hyhmrright/logic-lens --skill sync-skill-cachegit clone --depth 1 https://github.com/hyhmrright/logic-lensWrote 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/hyhmrright/logic-lens/sync-skill-cache)<a href="https://agentmods.dev/skills/hyhmrright/logic-lens/sync-skill-cache"><img src="https://agentmods.dev/badge/skills/hyhmrright/logic-lens/sync-skill-cache/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/hyhmrright/logic-lens/sync-skill-cache"><img src="https://agentmods.dev/badge/skills/hyhmrright/logic-lens/sync-skill-cache.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 | $0.00103 | $0.00504 |
| Opus 5.5 | $0.00041 | $0.00202 |
| Sonnet 5.5 | $0.00021 | $0.00101 |
| Haiku 4.5 | $0.00010 | $0.00050 |
Grade A, and why
sync-skill-cache 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 1mo 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.
What it actually says
sync-skill-cache
content-evals invoke each skill through Claude Code's plugin mechanism, which loads from
~/.claude/plugins/cache/logic-lens-marketplace/logic-lens/<version>/skills/ — not the
repo's skills/. Editing skills/ changes nothing the eval sees until you copy it into the
cache. This is the single most expensive footgun in the iteration loop: skip it and you grade
the previous skill while believing you tested your change.
Steps
-
Sync + verify from the repo root:
bash .claude/skills/sync-skill-cache/scripts/sync-cache.shThe script reads the active version from
package.json, rsyncsskills/into the matching cache dir (--delete, so removed files are removed in the cache too), then diffs the two to confirm they are byte-identical. It printsOK …on success. -
If it prints
DRIFTor a missing-cache error: do not run evals. The two common causes:- The cache dir for the current
package.jsonversion doesn't exist (plugin not installed at this version) — reinstall/refresh the plugin, or check you didn't just bump the version without refreshing the cache. - rsync was blocked — rerun and read the diff list it prints.
- The cache dir for the current
-
Verify-only mode (no copy) to answer "is the cache fresh?":
bash .claude/skills/sync-skill-cache/scripts/sync-cache.sh --check
This skill is the mandatory gate between editing a skill and grading it. The iterate-skill
orchestrator calls it automatically; run it by hand whenever you edit a skill outside that loop.
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.
- 1mo ago First seen · 38 lines · 103 tokens per session scan A 5818174e89aa
sync-skill-cache is a skill published in the GitHub repository hyhmrright/logic-lens (25 stars, last pushed 24d ago), licensed MIT. It adds 103 tokens to every session and 504 once invoked, about $0.0004 per session on Opus 5.5. 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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