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 0xDarkMatter/claude-mods --skill atomisegit clone --depth 1 https://github.com/0xDarkMatter/claude-modsWrote 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/0xdarkmatter/claude-mods/atomise)<a href="https://agentmods.dev/skills/0xdarkmatter/claude-mods/atomise"><img src="https://agentmods.dev/badge/skills/0xdarkmatter/claude-mods/atomise.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 | $0.00055 | $0.01347 |
| Opus 5 | $0.00028 | $0.00674 |
| Sonnet 5 | $0.00011 | $0.00269 |
| Haiku 4.5 | $0.00006 | $0.00135 |
Grade A, and why
atomise 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 7d 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 — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Atomise - Atom of Thoughts Reasoning
Decompose complex problems into minimal, verifiable "atoms" of thought. Unlike chain-of-thought (linear, error-accumulating), AoT treats each step as independently verifiable and backtracks when confidence drops.
Use for: Security analysis, architectural decisions, complex debugging, multi-step proofs. Don't use for: Simple questions, trivial calculations, information lookup.
/atomise "<problem>" [--light | --deep] [--math | --code | --security | --design]
The Core Loop
1. DECOMPOSE -> Break into atomic subquestions (1-2 sentences each)
2. SOLVE -> Answer leaf nodes first, propagate up
3. VERIFY -> Test each hypothesis (counterexample, consistency, domain check)
4. CONTRACT -> Summarize verified state in 2 sentences (drop history)
5. EVALUATE -> Confident enough? Done. Too uncertain? Backtrack and try another path.
Repeat until confident or all paths exhausted.
Atoms
Each atom is a minimal unit:
{id, type, content, depends_on[], confidence, verified}
| Type | Purpose | Starting Confidence |
|---|---|---|
| premise | Given facts | 1.0 |
| reasoning | Logical inference | Inherited from parents |
| hypothesis | Claim to test | Max 0.7 until verified |
| verification | Test result | Based on test outcome |
| conclusion | Final answer | Propagated from chain |
Confidence propagates: A child can't be more confident than its least-confident parent.
Confidence (Honest Caveat)
These numbers are heuristic, not calibrated probabilities. They're useful for tracking relative certainty, not for actual risk assessment.
| Threshold | Meaning |
|---|---|
| > 0.85 | Confident enough to conclude |
| 0.6 - 0.85 | Needs more verification |
| < 0.6 | Decompose further or backtrack |
| < 0.5 | Backtrack - this path isn't working |
Verification adjusts confidence:
- Confirmed -> maintain or slight boost
- Partial -> reduce ~15%
- Refuted -> major reduction, likely backtrack
What ships with it
3 files 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.
- 7d ago First seen · 177 lines · 55 tokens per session scan A a5ba040f6d38
atomise is a skill published in the GitHub repository 0xDarkMatter/claude-mods (32 stars, last pushed 14d ago), licensed MIT. It adds 55 tokens to every session and 1,347 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 2026-08-30.
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