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-node-typesgit 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-node-types)<a href="https://agentmods.dev/skills/saulmcphd/okf-skills/okf-node-types"><img src="https://agentmods.dev/badge/skills/saulmcphd/okf-skills/okf-node-types.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 | $0.00169 | $0.01741 |
| Opus 5 | $0.00084 | $0.00870 |
| Sonnet 5 | $0.00034 | $0.00348 |
| Haiku 4.5 | $0.00017 | $0.00174 |
Grade A, and why
okf-node-types 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 6d 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 — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Author entity, reference & system nodes
The three OKF node types that are not concepts. Per the OKF spec these are all just "concepts with a
different type" — the split into folders is a widely-used convention (ours + Marie Haynes' public
OKF brain), not a spec rule. They reuse the concept node's shape (frontmatter → structural body →
# Related → citations → provenance for AI nodes — see okf-concept-node); this skill covers only
what differs per type. Domain-agnostic (gardening, academic, ops).
Entity — a concrete, identity-bearing thing
Path entities/entity-<slug>.md. Use for a person, organisation, tool, instrument, or a specific
study — anything with a name/identity (vs a concept, which is an idea/rule about such things).
- Frontmatter: the standard keys plus
entity_kind:(person|organisation|tool|instrument|study| …). - Body — identity-focused, not a full treatise. Keep it to who/what it is; the deep knowledge lives
in the concept nodes it links to. Conventional sections:
# Definition(who/what) →# Key contributions(or key facts) →# Significance→# Related→# References.
---
type: entity
title: "Royal Horticultural Society (RHS)"
description: "UK gardening charity; authority on horticultural practice, plant trials, and the Award of Garden Merit."
entity_kind: organisation
tags: [organisation, horticulture, uk]
generated: { by: session-authored, at: 2026-07-11T00:00:00Z } # OKF v0.2: replaces timestamp
---
# Definition
The Royal Horticultural Society (founded 1804) is the UK's leading gardening charity…
# Key contributions
- Runs plant trials and awards the **Award of Garden Merit (AGM)**…
- Publishes advice used across this brain (companion planting, pest control)…
# Significance
The AGM is the reference standard several concept nodes cite for cultivar choice.
# Related
* [Companion planting](/concepts/concept-companion-planting.md) - RHS guidance underpins the pairings.
# References
Royal Horticultural Society. (n.d.). About the RHS. https://www.rhs.org.uk/about-the-rhs
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.
- 6d ago First seen · 134 lines · 169 tokens per session scan A 1a0b9c4a8acc
okf-node-types is a skill published in the GitHub repository saulmcphd/okf-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 169 tokens to every session and 1,741 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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