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 uHappyLogic/cairn --skill answer-open-question-with-alternativegit clone --depth 1 https://github.com/uHappyLogic/cairnWrote 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/uhappylogic/cairn/answer-open-question-with-alternative)<a href="https://agentmods.dev/skills/uhappylogic/cairn/answer-open-question-with-alternative"><img src="https://agentmods.dev/badge/skills/uhappylogic/cairn/answer-open-question-with-alternative/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/uhappylogic/cairn/answer-open-question-with-alternative"><img src="https://agentmods.dev/badge/skills/uhappylogic/cairn/answer-open-question-with-alternative.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 | $0.00031 | $0.01799 |
| Opus 5.5 | $0.00012 | $0.00720 |
| Sonnet 5.5 | $0.00006 | $0.00360 |
| Haiku 4.5 | $0.00003 | $0.00180 |
Grade A, and why
answer-open-question-with-alternative 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 today.
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 — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
answer-open-question-with-alternative
Records a named <alternative> from one open question's embedded analysis as its answer
inline, in the current conversation — never in a subagent — so the recording reasoning
(which block was resolved, which alternative was chosen, what decision was folded in, what
cascaded) stays in context for follow-up.
This is the sibling of answer-open-question-with-recommendation: same recommend-sweep
annotations, same recording core, but the answer is the <alternative> you name by its
id rather than the one <recommendation> the sweep picked — which lets you record a
decision that overrides the recommendation, or resolve a question the sweep left genuinely
tied. There is deliberately no batch or agent form of this skill; to record every
recommendation-bearing question at its recommended option unattended, use
/answer-all-open-questions-with-recommendation.
Invocation
/answer-open-question-with-alternative [--milestone <milestone_id>] <Short Title>. <Alternative Id>
First strip a leading --milestone <milestone_id> from the argument by the rule in
{{PLUGIN_ROOT}}/shared/get-current-milestone.md, holding any override for step 1, then split
the rest on the first . — exactly as answer-open-question does. Everything
before it is <Short Title> (the question handle); everything after it is <Alternative Id>
(the id of the <alternative> to record). Trim surrounding whitespace from both halves.
<Short Title>must match (case-insensitive, against the block'sid) an existing<open-question>block in<MILESTONE_DIR>/open_questions.xmlthat the/recommend-all-open-questionssweep has already annotated with<alternative>elements.<Alternative Id>must match (case-insensitive, against theidattribute) one of that block's embedded<alternative id="...">elements.
The skill resolves the current milestone itself, so nothing needs to be looked up first. The
optional leading --milestone <milestone_id> names the milestone by its exact directory name
under milestones/, e.g. milestone_12_user-guide, in place of the current-milestone pointer.
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.
- today Changed · +4 lines 3f19affe3ce8
- 21d ago Changed · +3 lines 25607f27cf85
- 1mo ago Changed · -1 lines f2d73e21bc00
- 1mo ago Changed · -22 lines f2b05a0e203d
- 1mo ago Changed ef31eed046ae
- 1mo ago Changed · -1 lines c581b0d1c820
- 1mo ago Changed · +2 lines cc00edd5268f
- 1mo ago Changed · +3 lines 25a9d7e2af24
- 1mo ago Changed · -3 lines 54e4238b15d0
- 1mo ago First seen · 152 lines · 31 tokens per session scan A 4e271773e46a
answer-open-question-with-alternative is a skill published in the GitHub repository uHappyLogic/cairn (3 stars, last pushed today), licensed MIT. It adds 31 tokens to every session and 1,799 once invoked, about $0.0001 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 2026-08-31.
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