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📚 okf — Open Knowledge Format for Claude Code

*Author, maintain, and validate portable knowledge bundles your agents and your team can read.*

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Knowledge as code. OKF is an open, vendor-neutral format that represents knowledge — the metadata, context, and curated insight around your systems — as a directory of markdown files with YAML frontmatter. No schema registry. No runtime. No SDK. If you can cat a file you can read it; if you can git clone a repo you can ship it.

This plugin teaches Claude Code to produce, maintain, and validate OKF bundles correctly — driven by the verbatim spec, backed by a deterministic conformance checker.

Why

Project knowledge lives scattered across wikis, code comments, and people's heads. Agents re-discover it from scratch every session. OKF gives you one durable, diffable, portable home for it — versioned next to the code it describes. This plugin makes keeping that home accurate a normal part of how Claude works.

What's inside

Install

As a Claude Code plugin (one-plugin marketplace):

/plugin marketplace add scaccogatto/okf-skills
/plugin install okf@scaccogatto

As agent skills via [skills.sh](https://skills.sh) (Claude Code, Cursor, Codex, and 20+ agents):

npx skills add scaccogatto/okf-skills            # installs the okf + validate skills

Local development (no marketplace):

claude --plugin-dir /path/to/okf

Both layouts coexist in this single repo: .claude-plugin/ makes it a plugin marketplace; skills/<name>/SKILL.md makes it skills.sh-discoverable. The validator lives inside the validate skill and is referenced via ${CLAUDE_SKILL_DIR}, so it works identically in either install path.

Requires uv for the validator (or python3 + pyyaml).

Use it

Capture knowledge — ask Claude to "document the auth service in OKF", or run:

/okf:okf produce .okf

Validate before committing:

/okf:validate .okf --strict
# or directly:
uv run skills/validate/scripts/okf_validate.py .okf --strict

Visualize the knowledge graph (self-contained viz.html, opens in any browser):

/okf:visualize .okf
# or directly:
uv run skills/visualize/scripts/okf_visualize.py .okf -o viz.html

Turn on automatic upkeep (soft mode). This plugin ships no hooks by design. To have Claude consult .okf/ before tasks and write knowledge back after changes, paste templates/CLAUDE-okf.md into your project's CLAUDE.md (or ~/.claude/CLAUDE.md for all projects).

How a bundle looks

.okf/
├── index.md                  # progressive disclosure (root carries okf_version)
├── log.md                    # ISO-dated change history, newest first
├── services/
│   ├── index.md
│   └── auth-api.md           # one concept = one file; path is its ID
└── decisions/
    └── use-okf.md

Each concept needs only one thing to be conformant: YAML frontmatter with a non-empty type. Everything else is optional and tolerated when missing.

---
type: Service
title: Auth API
description: Issues and verifies short-lived access tokens.
resource: https://github.com/acme/auth
tags: [auth, platform]
timestamp: 2026-06-14T10:00:00Z
---

# Endpoints
| Method | Path     | Description                |
|--------|----------|----------------------------|
| `POST` | `/token` | Exchange creds for a JWT.  |

Repository layout

okf-skills/
├── .claude-plugin/{plugin.json, marketplace.json}
├── skills/okf/{SKILL.md, reference/SPEC.md, templates/}
├── skills/validate/{SKILL.md, scripts/okf_validate.py}
├── skills/visualize/{SKILL.md, scripts/okf_visualize.py}
├── examples/sample-bundle/
├── templates/CLAUDE-okf.md
└── .github/workflows/ci.yml

Contributing

Issues and PRs welcome — new templates, producers for more sources, validator improvements. CI validates the plugin manifest and the example bundle on every push.

Credits & license

• The Open Knowledge Format specification is by the Google Cloud Data Cloud

team, released under Apache-2.0. skills/okf/reference/SPEC.md is vendored verbatim from the reference repository with attribution.

• This plugin's own code and content: MIT © Marco Boffo (@scaccogatto).