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 Abilityai/cornelius --skill decidegit clone --depth 1 https://github.com/Abilityai/corneliusWrote 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/abilityai/cornelius/decide)<a href="https://agentmods.dev/skills/abilityai/cornelius/decide"><img src="https://agentmods.dev/badge/skills/abilityai/cornelius/decide/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/abilityai/cornelius/decide"><img src="https://agentmods.dev/badge/skills/abilityai/cornelius/decide.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 | $0.00175 | $0.02539 |
| Opus 5.5 | $0.00070 | $0.01016 |
| Sonnet 5.5 | $0.00035 | $0.00508 |
| Haiku 4.5 | $0.00017 | $0.00254 |
Grade A, and why
decide 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 — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Decide
ℹ️ First, set expectations: print one line with this skill's version and its most recent change - the top of
metadata.changelog- e.g.decide v1.0 — recent: initial decision-structuring skill. Then proceed.
Purpose
/advise produces a better map; /decide produces a choice. When the question is "what should we do", frameworks alone under-deliver - the output must be a recommendation produced by an explicit decision rule, with the losing options accounted for and tripwires attached. The KB skeleton is decision science (Kahneman / Gilbert / Tetlock / Thaler / Kay-King, bound by Ergodicity); this skill is where that skeleton actually decides instead of only describing.
Problem
$ARGUMENTS
State Dependencies
| Source | Location | Read | Write |
|---|---|---|---|
| LBS search | resources/local-brain-search/run_search.sh |
✓ | |
| Core hubs (attractor check) | resources/local-brain-search/run_connections.sh --hubs --json |
✓ | |
| KB notes | Brain/**/*.md |
✓ | |
| Reasoning-checks contract | .claude/skills/reasoning-checks/SKILL.md |
✓ | |
| Canon (conditional) | Brain/Canon/**/*.md via canon-mounted search |
✓ |
Never writes. A decision brief may be saved to Brain/05-Meta/Reports/ only on explicit request (Step 8).
Composes
reasoning-checks- the shared discipline contract (applied per its applicability matrix, this skill runs the full battery)
Process
Step 1: Decision Guard (route before structuring)
Confirm this is actually a decision: two or more real courses of action, stakes, and someone who must choose. If it is understanding-seeking ("help me think about X") → /advise or /think-about-it. If it is a company-direction question canon already covers → /canon-advise governs; never relitigate a decided direction - /decide may still structure a new decision that canon leaves open (run one canon-mounted search BRAIN_READ_SCOPE=core,Canon when the subject smells like company direction; if a decision/spec note decides it, say so and stop).
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 · 147 lines · 175 tokens per session scan A 7b98018d3bff
decide is a skill published in the GitHub repository Abilityai/cornelius (110 stars, last pushed 8d ago), licensed MIT. It adds 175 tokens to every session and 2,539 once invoked, about $0.0007 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 2026-10-09.
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