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 shipwrights/core --skill shipwrights-spec-cancelgit clone --depth 1 https://github.com/shipwrights/coreWrote 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/shipwrights/core/shipwrights-spec-cancel)<a href="https://agentmods.dev/skills/shipwrights/core/shipwrights-spec-cancel"><img src="https://agentmods.dev/badge/skills/shipwrights/core/shipwrights-spec-cancel.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 5.1 | $0.00057 | $0.00360 |
| Opus 5 | $0.00028 | $0.00180 |
| Sonnet 5 | $0.00011 | $0.00072 |
| Haiku 4.5 | $0.00006 | $0.00036 |
Grade A, and why
shipwrights-spec-cancel 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
/shipwrights-spec-cancel — abandon a spec
Use this when:
- The drafted spec is wrong-direction and revising won't fix it
- Priorities changed and the work isn't needed anymore
- The spec was created by mistake
What you do
- Validate spec exists.
- Refuse if
statusisshippedor alreadycancelled(terminal states). - Flip frontmatter to
status: cancelled. - Commit:
chore(spec): cancel <id>. - If the spec was past
approved, note that scratch branches may exist (<feature>--backend,--frontend,--qa) and need manual cleanup.
Hard rules
- The file is not deleted. It stays as an audit trail.
- After
cancel, the orchestrator (/shipwrights-spec,/shipwrights-spec-approve,-revise) refuses to act on this id. - Cancelling mid-build leaves scratch branches; the user cleans them up.
Output
✓ Spec <id> cancelled.
The file stays in place as an audit trail.
If past approved:
Note: status was "<previous-status>" — scratch branches may still exist.
Clean them up manually with: git branch | grep -- '--' | xargs git branch -D
CLI implementation: lib/commands/spec-cancel.mjs.
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 · 42 lines · 57 tokens per session scan A e80cb7455d24
shipwrights-spec-cancel is a skill published in the GitHub repository shipwrights/core (2 stars, last pushed 1mo ago), licensed MIT. It adds 57 tokens to every session and 360 once invoked, about $0.0003 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 2026-08-31.
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