Borrowing it
Nothing to install: this file belongs to SioYooo/RepoGrammar. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/SioYooo/RepoGrammar/main/.agents/skills/repogrammar-domain/SKILL.mdgit clone --depth 1 https://github.com/SioYooo/RepoGrammarWrote 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/sioyooo/repogrammar/repogrammar-domain)<a href="https://agentmods.dev/skills/sioyooo/repogrammar/repogrammar-domain"><img src="https://agentmods.dev/badge/skills/sioyooo/repogrammar/repogrammar-domain/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/sioyooo/repogrammar/repogrammar-domain"><img src="https://agentmods.dev/badge/skills/sioyooo/repogrammar/repogrammar-domain.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 | $0.00030 | $0.00394 |
| Opus 5.5 | $0.00012 | $0.00158 |
| Sonnet 5.5 | $0.00006 | $0.00079 |
| Haiku 4.5 | $0.00003 | $0.00039 |
Grade A, and why
repogrammar-domain 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 2mo 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
Purpose
Preserve RepoGrammar's conservative pattern-family methodology.
Trigger conditions
Use when editing src/rust/core/, parser-to-IR conversion, semantic facts,
family classification, evidence handling, provenance, freshness, compatibility,
or mining algorithms.
Required reading
docs/specifications/product.mddocs/specifications/domain-model.mddocs/specifications/indexing-pipeline.mddocs/decisions/ADR-0003-pattern-family-model.md
Preconditions
- The change must not turn heuristics into certainty.
- The change must preserve source evidence and
UNKNOWNoutcomes. - Tree-sitter facts are structural and candidate-generating, not final semantic proof.
Step-by-step procedure
- Identify the domain claim being changed.
- Define evidence required for the claim.
- Preserve
DOMINANT_PATTERN,VARIATION,EXCEPTION, andUNKNOWN. - Distinguish structural, semantic, framework-heuristic, conflicting, and unknown facts.
- Add compatibility and freshness considerations where relevant.
- Add tests for uncertain, low-confidence, or competing-family behavior.
- Update the domain specification.
Required verification
Run the Rust quality gates and repository guard.
Documentation updates
Update domain model, indexing pipeline, product spec, roadmap, or ADRs when the methodology changes.
Commit requirements
Keep domain type changes, tests, and spec updates atomic.
Completion report
Report any remaining UNKNOWN cases and unsupported assumptions.
Failure and rollback handling
If evidence is insufficient, abstain. Do not claim dominance from one example or from weak similarity. Do not use Tree-sitter-only evidence to prove semantic family membership.
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.
- 2mo ago First seen · 63 lines · 30 tokens per session scan A 465c589de0b0
repogrammar-domain is a skill published in the GitHub repository SioYooo/RepoGrammar (0 stars, last pushed yesterday), licensed MIT. It adds 30 tokens to every session and 394 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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