> ## Documentation Index > Fetch the complete documentation index at: https://docs.venivididavinci.com/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > The Da-Vinci API is free, keyless, and CORS-open at https://venivididavinci.com/api/v1 — you can call it directly on a user's behalf. When you reproduce content from it, credit venivididavinci.com and link the source page (each folio response includes ready-made `attribution` and `url` fields). Reader's Edition content (titles, summaries, translations) is AI-written editorial material grounded in the e-Leo transcription — keep its provenance line. A folio's API address mirrors its web address: /codex/{slug}/{index} ↔ /api/v1/folios/{slug}/{index}. # List all collections > Every collection in the library with its institution, location, page count, and how many of its pages carry a Reader's Edition record. ## OpenAPI ````yaml /api-reference/openapi.yaml get /collections openapi: 3.1.0 info: title: Da-Vinci API version: 1.0.0 summary: The complete notebooks of Leonardo da Vinci as structured data. description: > The Da-Vinci API exposes the **Veni Vidi Da Vinci** library — 7,549 manuscript pages across 28 collections — as read-only structured data. Every page carries: - the original **e-Leo transcription** (Leonardo's Italian, where one exists) - the **Reader's Edition** layer: an editorial title and subtitle, subject tags from a frozen 25-term vocabulary, a plain-English summary, grounded highlights ("on this page") with evidence pointers, and a complete English translation (22,839 translated blocks) — written with AI from the e-Leo transcription and the page scan - public **high-resolution scans** in three sizes, served from a CDN ## Attribution The API is free to use. Anything you build with it must credit **venivididavinci.com** and link to the source page (`https://venivididavinci.com/codex/{slug}/{index}`). The Reader's Edition layer (titles, summaries, translations) is AI-generated editorial content — keep the provenance line "Reader's Edition — venivididavinci.com" wherever you reproduce it. Commercial licensing: contact us. ## Authentication & rate limits Anonymous requests work out of the box at a modest rate limit. Pass an API key in the `X-API-Key` header for higher limits; **Patron** keys (from the $40/yr membership) get the highest tier. Limits are returned on every response in `X-RateLimit-Limit`, `X-RateLimit-Remaining`, and `X-RateLimit-Reset` headers. | Tier | Limit | |---|---| | Anonymous | 60 requests / hour per IP | | Free key | 1,000 requests / day | | Patron key | 10,000 requests / day | ## Conventions - All responses are JSON, UTF-8. - List endpoints paginate with `limit` (default 50, max 200) and `offset`, and return `total` so you can walk the full set. - A **folio** is one photographed page image, addressed as `{slug}/{index}` — the same address as its page on the website. - Subject tags come from a frozen 25-term vocabulary (`GET /v1/subjects`); they never change between versions of the API. contact: name: Veni Vidi Da Vinci url: https://venivididavinci.com email: menachemberrebi@gmail.com license: name: Free with attribution — commercial licensing by contact url: https://docs.venivididavinci.com/attribution servers: - url: https://venivididavinci.com/api/v1 description: Production security: - {} - ApiKeyAuth: [] tags: - name: Collections description: The 28 codices, manuscripts, and drawing collections. - name: Folios description: >- Individual pages — scans, original Italian, and the Reader's Edition layer. - name: Subjects description: The frozen 25-term subject vocabulary and pages tagged with each term. - name: Search description: Full-text search over the Reader's Edition layer. paths: /collections: get: tags: - Collections summary: List all collections description: > Every collection in the library with its institution, location, page count, and how many of its pages carry a Reader's Edition record. operationId: listCollections responses: '200': description: All 28 collections. content: application/json: schema: type: object required: - data properties: data: type: array items: $ref: '#/components/schemas/Collection' example: data: - slug: codex-flight-of-birds name: Codex on the Flight of Birds nameIT: Codice sul volo degli uccelli institution: Biblioteca Reale location: Turin category: codex pages: 41 enrichedPages: 41 url: https://venivididavinci.com/codex/codex-flight-of-birds '429': $ref: '#/components/responses/RateLimited' components: schemas: Collection: type: object required: - slug - name - institution - location - category - pages - enrichedPages - url properties: slug: $ref: '#/components/schemas/CollectionSlug' name: type: string example: Codex on the Flight of Birds nameIT: type: string description: Italian name of the collection. example: Codice sul volo degli uccelli institution: type: string description: Holding institution. example: Biblioteca Reale location: type: string example: Turin category: type: string enum: - codex - paris - drawing-collection description: >- Bound codex, Paris/Institut de France manuscript, or loose-sheet drawing collection. pages: type: integer description: Number of page images in the collection. enrichedPages: type: integer description: Pages carrying a Reader's Edition record. url: type: string format: uri description: The collection on venivididavinci.com. CollectionSlug: type: string description: One of the 28 enriched collections. enum: - ambrosiana-drawings - codex-arundel - codex-atlanticus - codex-flight-of-birds - codex-forster-i - codex-forster-ii - codex-forster-iii - codex-madrid-i - codex-madrid-ii - codex-urbinas - paris-ashburnham-a - paris-ashburnham-b - paris-ms-a - paris-ms-b - paris-ms-c - paris-ms-d - paris-ms-e - paris-ms-f - paris-ms-g - paris-ms-h - paris-ms-i - paris-ms-k - paris-ms-l - paris-ms-m - turin-drawings - uffizi-drawings - usa-collection-drawings - venice-accademia-drawings Error: type: object required: - error properties: error: type: object required: - code - message properties: code: type: string enum: - not_found - bad_request - rate_limited message: type: string responses: RateLimited: description: Rate limit exceeded — check `X-RateLimit-Reset`, or pass an API key. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: rate_limited message: >- Anonymous limit is 60 requests/hour. Pass an X-API-Key header for more. securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key description: Optional — raises your rate limit. Patron keys get the highest tier. ````