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 commands/baodq97/open-plugin/ontology-buildgit clone --depth 1 https://github.com/baodq97/open-pluginWrote 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/commands/baodq97/open-plugin/ontology-build)<a href="https://agentmods.dev/commands/baodq97/open-plugin/ontology-build"><img src="https://agentmods.dev/badge/commands/baodq97/open-plugin/ontology-build.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 | $0.00009 | $0.00223 |
| Opus 5 | $0.00005 | $0.00112 |
| Sonnet 5 | $0.00002 | $0.00045 |
| Haiku 4.5 | $0.00001 | $0.00022 |
Grade A, and why
ontology-build 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 5d 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
Rebuild the skills ontology from source skill files.
Instructions
-
If CLI is available, run:
npx skills-ontology build .If not available, update
.claude/ontology/registry.yamlmanually from.claude/skills/*/SKILL.md. -
Validate output consistency:
.claude/ontology/graph.yamlhas no edges to missing skills.claude/ontology/chains.yamlreferences only existing skills
-
If graph has no edges, suggest 3-5 initial edges based on:
- Shared
domain->complementary - Sequential
phase->prerequisite - Coordinator skills ->
orchestrates
- Shared
-
Report:
- total skills
- new/removed skills
- graph coverage gaps
Do not modify .claude/ontology/usage-log.yaml unless user explicitly asks.
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.
- 5d ago First seen · 31 lines · 9 tokens per session scan A 67aa032ccbbe
ontology-build is a command published in the GitHub repository baodq97/open-plugin (4 stars, last pushed 3mo ago), licensed MIT. It adds 9 tokens to every session and 223 once invoked, about $0.0000 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.
Other commands, from other repositories
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document-app
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plan-okrs
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write-stories
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battlecard
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