OCF Validator

Reference validator for the Open Coaching Format. Checks an OCF document against the JSON Schema and the semantic rules the schema cannot express (ball-possession consistency, branch-target integrity, reference integrity), serving both authoring tools (LLM / editor) and the rendering gate.

• packages/ts — TypeScript library + ocf-validate CLI (reference impl).
• packages/py — Python mirror (same conformance suite).
• shared/ — language-neutral contract: model schema, error-code registry, named-position catalog, conformance fixtures.

Quick start (TypeScript)

npm install @opencoachingformat/validator
npx ocf-validate path/to/play.ocf.json

import { validate } from "@opencoachingformat/validator";
const result = validate(doc);
if (!result.valid) console.error(result.errors);

Building from source instead (this repo, not the published package):

cd packages/ts && npm install && npm run build
node dist/cli.js path/to/play.ocf.json

See the design doc for the full rule set and result format.