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 saulmcphd/okf-skills --skill okf-concept-nodegit clone --depth 1 https://github.com/saulmcphd/okf-skillsWrote 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/saulmcphd/okf-skills/okf-concept-node)<a href="https://agentmods.dev/skills/saulmcphd/okf-skills/okf-concept-node"><img src="https://agentmods.dev/badge/skills/saulmcphd/okf-skills/okf-concept-node.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 | $0.00159 | $0.04477 |
| Opus 5 | $0.00079 | $0.02239 |
| Sonnet 5 | $0.00032 | $0.00895 |
| Haiku 4.5 | $0.00016 | $0.00448 |
Grade A, and why
okf-concept-node 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 8d 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 — 295 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Author an OKF concept node
A concept node holds one unit of knowledge — a definition, rule, method, model, or debate. This
skill is the file-structure spec for one concept-<slug>.md. It is domain-agnostic.
If the repo has an
okf-gold-standard.md, follow its project-specific extensions (e.g. requiredprovenancefields, citation style). This skill is the self-contained baseline.
Filename & identity
- Path:
concepts/concept-<slug>.md(e.g.concepts/concept-companion-planting.md). - The file path IS the node's id. Do not add an
idfield, and do not rename casually — links point at the path. - Sibling types use the same body shape with a different
type:and slug prefix:entities/entity-<slug>.md,references/ref-<slug>.md,systems/system-<slug>.md.
Frontmatter (YAML)
Only type is required; the rest are recommended and queryable:
---
type: concept
title: "Human-readable title"
description: "One sentence an agent uses (via index.md) to decide if THIS is the file it needs."
resource: "https://… # canonical source URL — a provenance pointer, NOT a content crutch"
tags: [topic, subtopic, source-tag]
generated: { by: session-authored, at: 2026-07-11T00:00:00Z } # OKF v0.2: replaces timestamp
---
- Write
descriptionto be self-selecting: it is the only line the reader sees inindex.md, so it must let them decide to open the file without opening it. Think of the whole frontmatter as an index card an agent reads to know what the file is about before reading the body. typemay be descriptive. It normally matches the folder (concept), but OKF also permits a more specific label (e.g.BigQuery Table,Evaluation Framework). If you use descriptive types, keep them consistent so the index and graph can still group by them — and always place the node in the right canonical folder.- Trust fields (OKF v0.2, optional but recommended).
generatedandverifiedare kept deliberately separate — who wrote it is not who confirmed it:
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.
- 8d ago First seen · 295 lines · 159 tokens per session scan A 4977490f65d6
okf-concept-node is a skill published in the GitHub repository saulmcphd/okf-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 159 tokens to every session and 4,477 once invoked, about $0.0008 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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