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 tony/skills --skill double-check-aligngit clone --depth 1 https://github.com/tony/skillsWrote 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/tony/skills/double-check-align)<a href="https://agentmods.dev/skills/tony/skills/double-check-align"><img src="https://agentmods.dev/badge/skills/tony/skills/double-check-align.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 | $0.00025 | $0.00553 |
| Opus 5 | $0.00013 | $0.00277 |
| Sonnet 5 | $0.00005 | $0.00111 |
| Haiku 4.5 | $0.00003 | $0.00055 |
Grade A, and why
double-check-align 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.
How it starts
The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
this skill
Recovery for a broken double-check. The chat currently holds a revision log — verdicts about prior claims, deltas against text the user never read. Replace it with the analysis itself.
Read references/verification-contract.md
first — it is the contract this command restores.
$ARGUMENTS
- Empty — re-anchor on the subject of the most recent analysis thread, at its original scope.
- A topic or question — re-anchor on that instead. Narrowing is a feature: it discards the earlier answer's scaffolding, which is what lets omitted items finally surface.
Steps
- Recover the request. From the conversation, reconstruct the original question and every constraint the user has added since — including corrections they made that you agreed with. User turns are binding context; your own answer turns are not.
- Quarantine prior answers. Everything you previously concluded is untrusted until re-verified against source. Do not reuse prior numbering, category names, or verdict framing.
- Re-derive and restate. Re-open the source artifacts and write the full analysis, standalone, in the shape the original request implied. Every claim stated positively and in full — no verdict shorthand, no "as noted above", no delta table.
- Weakness inline. If a claim is weak, say why it is weak. Never say it was previously stated differently.
What this does not do
- Reference, summarize, or grade the earlier response — the user did not read it and will not.
- Edit files or commit — output is conversation only.
- Answer a different question than the one recovered or given — losing focus is the failure this command repairs.
Portability notes
$ARGUMENTS— the text the user passed when invoking this skill. If your host does not substitute it, read it as the user's request in the current turn, and ask when there is none.- Bundled files — every relative path in this skill points at a file shipped inside this skill directory. Read them from here, not from the host's plugin tree.
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.
- 8d ago First seen · 59 lines · 25 tokens per session scan A dcc587fc05ac
double-check-align is a skill published in the GitHub repository tony/skills (2 stars, last pushed 3d ago), licensed MIT. It adds 25 tokens to every session and 553 once invoked, about $0.0001 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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