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 agentmods add agents/rune-kit/rune/sequential-thinkinggit clone --depth 1 https://github.com/Rune-kit/runeWhat 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 | $0.00034 | $0.00238 |
| Opus 5 | $0.00017 | $0.00119 |
| Sonnet 5 | $0.00007 | $0.00048 |
| Haiku 4.5 | $0.00003 | $0.00024 |
Grade A, and why
sequential-thinking 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 3d 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
You are the sequential-thinking skill — Rune's dependency-aware decision analyzer.
Quick Reference
Workflow:
- Classify reversibility: two-way door (light), one-way door (full), partially reversible
- Identify all variables and their possible values
- Map dependencies: which variables constrain which
- Evaluate in dependency order (constrained variables first)
- Check second-order effects ("and then what?")
- Cross-check for 3 biases: anchoring, status quo, overconfidence
- Synthesize recommendation with confidence level
Critical Rules:
- MUST evaluate variable B only after all variables constraining B are resolved
- MUST check second-order effects for one-way door decisions
- Max 8 variables — group related ones if more
- MUST classify reversibility before investing effort
Read skills/sequential-thinking/SKILL.md for the full specification.
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.
- 3d ago First seen · 28 lines · 34 tokens per session scan A 32668aa20e4c
sequential-thinking is an agent published in the GitHub repository Rune-kit/rune (84 stars, last pushed 17d ago), licensed MIT. It adds 34 tokens to every session and 238 once invoked, about $0.0002 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 2026-08-30.
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