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 jcooley8/pincushion-plugin --skill pincushion-ui-checkpointgit clone --depth 1 https://github.com/jcooley8/pincushion-pluginWrote 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/jcooley8/pincushion-plugin/pincushion-ui-checkpoint)<a href="https://agentmods.dev/skills/jcooley8/pincushion-plugin/pincushion-ui-checkpoint"><img src="https://agentmods.dev/badge/skills/jcooley8/pincushion-plugin/pincushion-ui-checkpoint/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/jcooley8/pincushion-plugin/pincushion-ui-checkpoint"><img src="https://agentmods.dev/badge/skills/jcooley8/pincushion-plugin/pincushion-ui-checkpoint.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00052 | $0.00247 |
| Opus 5.5 | $0.00021 | $0.00099 |
| Sonnet 5.5 | $0.00010 | $0.00049 |
| Haiku 4.5 | $0.00005 | $0.00025 |
Grade A, and why
pincushion-ui-checkpoint 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 8d 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
One suggestion after UI work
Use only after a completed batch of user-facing UI work, not planning, source
reads, backend changes or individual edits. Check that this project is connected
using read-only get_project_context; do not register it to enable a suggestion.
Use the conversation's completed work batch as the deduplication boundary.
If this batch has not already received a Crit suggestion, and the user has not
declined reminders, briefly suggest /pincushion-crit for its confirmed URL.
Do not repeat during the same batch, during status updates or after every pin.
If the user declines, stop suggesting until they ask again or authorize it.
Do not call mutation tools, run captures, create pins, share reports or implement
findings. A suggestion is not a completed Crit. This is a model-invoked skill,
not a filesystem hook or guaranteed background monitor.
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.
- 8d ago First seen · 21 lines · 52 tokens per session scan A 7cef4ebdf437
pincushion-ui-checkpoint is a skill published in the GitHub repository jcooley8/pincushion-plugin (1 stars, last pushed 6d ago), licensed MIT. It adds 52 tokens to every session and 247 once invoked, about $0.0002 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 2026-09-28.
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