An open format · not another content silo

Anyone can publish a lesson.

Make a course or a deck with the LLM you choose. Check it locally. Host it on any static site. Learners can use the publisher’s site directly or verify the feed here before saving a copy on their device.

Open a learning feed View the standalone example

Author anywhere

A person or any capable LLM writes the same public JSON format. No model-specific API is required.

Check locally

Strict schemas, source references, objective coverage, and deterministic builds catch common failures before publishing.

Host anywhere

The result is a static site and a digest-pinned feed. The publisher keeps the URL and the learner keeps progress.

Learn from any publisher

Open a hosted lesson feed.

Paste a publisher’s HTTPS feed. Latent checks its format, byte count, identity, and SHA-256 digest before rendering anything. Nothing in a community pack can execute code.

Publish from this browser

Make your own lesson or flash-card site.

Ask any LLM to follow the public schema, or edit the starter directly. Validation and the static builder run here on your device. The download can go on GitHub Pages, Cloudflare Pages, S3, or any ordinary web server.

learning-pack.jsonOpen JSON

{
  "flashcardDecks": [
    {
      "cards": [
        {
          "back": "TODO: write a concise, accurate definition.",
          "explanation": "TODO: connect the definition directly to the cited firsthand source.",
          "front": "What is the core idea?",
          "id": "core-definition",
          "objectiveIds": [
            "explain-core-idea"
          ],
          "sourceIds": [
            "primary-source"
          ]
        },
        {
          "back": "TODO: write one important boundary or failure case.",
          "explanation": "TODO: explain how this boundary prevents overgeneralization.",
          "front": "When does the core idea not apply?",
          "id": "core-boundary",
          "objectiveIds": [
            "explain-core-idea"
          ],
          "sourceIds": [
            "primary-source"
          ]
        }
      ],
      "description": "Recall the definition, boundary, and a practical application of the core idea.",
      "id": "core-review",
      "objectiveIds": [
        "explain-core-idea"
      ],
      "order": 1,
      "sourceIds": [
        "primary-source"
      ],
      "title": "Core idea review"
    }
  ],
  "format": "latent-learning-pack",
  "lessons": [
    {
      "blocks": [
        {
          "text": "TODO: write a clear explanation grounded in the cited source.",
          "type": "paragraph"
        },
        {
          "text": "TODO: add a small example that lets the learner predict an outcome before revealing the answer.",
          "title": "Make it concrete",
          "tone": "tip",
          "type": "callout"
        },
        {
          "choices": [
            {
              "id": "correct",
              "text": "TODO: write the correct application."
            },
            {
              "id": "distractor",
              "text": "TODO: write a plausible misconception."
            }
          ],
          "correctChoiceId": "correct",
          "explanation": "TODO: explain why the correct choice follows from the source and why the distractor does not.",
          "id": "check-core-idea",
          "objectiveIds": [
            "explain-core-idea"
          ],
          "prompt": "Which answer best demonstrates the core idea in the situation you taught?",
          "sourceIds": [
            "primary-source"
          ],
          "type": "quiz"
        }
      ],
      "durationMinutes": 10,
      "id": "core-idea",
      "objectiveIds": [
        "explain-core-idea"
      ],
      "order": 1,
      "sourceIds": [
        "primary-source"
      ],
      "summary": "Build an accurate mental model, then check it with one concrete question.",
      "title": "The core idea"
    }
  ],
  "objectives": [
    {
      "description": "Explain the core idea accurately and identify when it is useful.",
      "id": "explain-core-idea"
    }
  ],
  "package": {
    "authors": [
      {
        "name": "TODO: publisher name"
      }
    ],
    "description": "A short, source-grounded lesson and review deck that teaches one useful idea.",
    "id": "todo-publisher/topic",
    "language": "en",
    "license": "CC-BY-4.0",
    "publishedAt": "2026-01-01T00:00:00Z",
    "title": "A focused learning pack",
    "version": "0.1.0"
  },
  "schemaVersion": 1,
  "sources": [
    {
      "id": "primary-source",
      "kind": "primary",
      "note": "TODO: explain exactly how this source supports the learning material.",
      "title": "TODO: add a firsthand source",
      "url": "https://example.com/source"
    }
  ]
}

The public contract

Portable content. Constrained runtime.

Publishers own: The source, license, domain, version history, and audience relationship.
LLMs can extend: Lessons, explanations, quizzes, objectives, citations, decks, cards, and namespaced metadata.
Packs cannot run: Remote JavaScript, HTML, Python, React, iframes, workers, or executable tests in a learner’s browser.
Latent may add: Optional discovery, verified publisher identity, editorial review, private registries, and managed hosting.