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 Sounio-lang/sounio --skill sounio-ontologygit clone --depth 1 https://github.com/Sounio-lang/sounioWrote 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/sounio-lang/sounio/sounio-ontology)<a href="https://agentmods.dev/skills/sounio-lang/sounio/sounio-ontology"><img src="https://agentmods.dev/badge/skills/sounio-lang/sounio/sounio-ontology/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/sounio-lang/sounio/sounio-ontology"><img src="https://agentmods.dev/badge/skills/sounio-lang/sounio/sounio-ontology.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 | $0.00044 | $0.00241 |
| Opus 5 | $0.00022 | $0.00120 |
| Sonnet 5 | $0.00009 | $0.00048 |
| Haiku 4.5 | $0.00004 | $0.00024 |
Grade A, and why
sounio-ontology 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 12d 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
Sounio Ontology
Overview
Maintain the ontology-backed semantic type layer and its tooling without forcing heavy, data-dependent workflows into the fast dev loop.
Workflow
1) Identify which ontology surface you’re touching
- Semantic typing and term resolution:
compiler/src/ontology/resolver.rs,compiler/src/ontology/mod.rs - Storage/caching/loading:
compiler/src/ontology/cache.rs,compiler/src/ontology/loader/ - Embeddings and similarity:
compiler/src/ontology/embedding/ - Federated ontology support:
compiler/src/ontology/federated.rs
2) Keep tests small
- Prefer unit tests using tiny fixtures/mocks.
- Gate large integration tests behind a feature flag and document runtime expectations.
References
- Ontology map:
references/ontology-navigation.md - Claude command reference:
.claude/commands/sounio-ontology.md
What ships with it
1 file 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.
- 12d ago First seen · 31 lines · 44 tokens per session scan A f4d5a795c71f
sounio-ontology is a skill published in the GitHub repository Sounio-lang/sounio (6 stars, last pushed today), licensed Apache-2.0. It adds 44 tokens to every session and 241 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 2026-08-31.
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