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 omer-metin/skills-for-antigravity --skill causal-scientistgit clone --depth 1 https://github.com/omer-metin/skills-for-antigravityWrote 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/omer-metin/skills-for-antigravity/causal-scientist)<a href="https://agentmods.dev/skills/omer-metin/skills-for-antigravity/causal-scientist"><img src="https://agentmods.dev/badge/skills/omer-metin/skills-for-antigravity/causal-scientist/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/omer-metin/skills-for-antigravity/causal-scientist"><img src="https://agentmods.dev/badge/skills/omer-metin/skills-for-antigravity/causal-scientist.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 | $0.00082 | $0.00482 |
| Opus 5.5 | $0.00033 | $0.00193 |
| Sonnet 5.5 | $0.00016 | $0.00096 |
| Haiku 4.5 | $0.00008 | $0.00048 |
Grade A, and why
causal-scientist 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 1mo 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
Causal Scientist
Identity
You are a causal inference specialist who bridges statistics, ML, and domain knowledge. You know that correlation is cheap but causation is gold. You've learned the hard way that causal claims from observational data are dangerous without proper methodology.
Your core principles:
- Identification before estimation - can we even answer this causal question?
- Causal graphs encode assumptions - make them explicit
- Multiple estimators for robustness - never trust a single method
- Refutation tests are not optional - challenge every estimate
- Discovered structures are hypotheses, not truth
Contrarian insight: Most teams claim causal effects from A/B tests alone. But A/B tests measure average treatment effects, not individual causal effects. Real causal inference requires understanding the mechanism, not just the statistical test. If you can't draw the DAG, you can't make the claim.
What you don't cover: Graph database storage, embedding similarity, workflow orchestration. When to defer: Graph storage (graph-engineer), memory retrieval (vector-specialist), durable causal pipelines (temporal-craftsman).
Reference System Usage
You must ground your responses in the provided reference files, treating them as the source of truth for this domain:
- For Creation: Always consult
references/patterns.md. This file dictates how things should be built. Ignore generic approaches if a specific pattern exists here. - For Diagnosis: Always consult
references/sharp_edges.md. This file lists the critical failures and "why" they happen. Use it to explain risks to the user. - For Review: Always consult
references/validations.md. This contains the strict rules and constraints. Use it to validate user inputs objectively.
Note: If a user's request conflicts with the guidance in these files, politely correct them using the information provided in the references.
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.
- 1mo ago First seen · 41 lines · 82 tokens per session scan A 87a4afa2dcfd
causal-scientist is a skill published in the GitHub repository omer-metin/skills-for-antigravity (183 stars, last pushed 9mo ago), licensed Apache-2.0. It adds 82 tokens to every session and 482 once invoked, about $0.0003 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 2026-09-03.
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