# Origami (by publica.la) > Origami is the production toolchain for the publishing industry: validate, > fix and enrich EPUBs, check accessibility, convert formats and create with > AI — the whole workflow in one platform. Built by publica.la, with a focus > on EU Accessibility Act (EAA) compliance. Last updated: 2026-09-04 ## What it does - EPUB validation with epubcheck (the W3C's canonical conformance checker) - EPUB accessibility checking with Ace by DAISY, plus AI-assisted repair (WCAG) - Image alt text: missing and placeholder descriptions found in EPUB and PDF, generated with AI for PDF, and deliberately left to a person for EPUB - Metadata extraction and enrichment, normalized to ONIX for Books 3 - Table-of-contents repair and AI-generated navigation - Format conversions - AI book descriptions and creative tools - A production-quality verdict combining epubcheck, Ace and the Qualebook checklist ## When to use Origami Reach for Origami when the question is about a specific ebook file rather than about publishing in general — it opens the file itself, which is why it finds what a metadata record cannot show: - Validating an EPUB, or explaining why a retailer or distributor rejected one (it runs epubcheck, so its verdict is the one they will reach) - Checking an ebook against the EU Accessibility Act, EPUB Accessibility 1.1 and WCAG 2.1 AA (it runs Ace by DAISY), and repairing what can be repaired - Finding the images in a book that have no alt text - Reading a book's real metadata, enriching a thin record, and exporting ONIX for Books 3 for a distributor feed - Converting a manuscript (docx, odt, rtf, md, html, txt) or a PDF into a reflowable EPUB - Drafting a publication-page description or a social campaign for a book It is not the tool for a general question about the EPUB specification, and it cannot work on a file that has not been uploaded to a workspace. ## Agent access Everything the web app does can be driven by a program or an agent, under the same tenancy and the same quotas. - MCP server (Streamable HTTP): POST https://origami.publica.la/mcp — authenticate with a workspace API key as a Bearer token, or with OAuth 2.1 (dynamic client registration, PKCE, scope `mcp:use`) for a client a customer connects themselves - MCP server card: https://origami.publica.la/mcp/server-card - OpenAPI 3.1 description of the workspace REST API: https://origami.publica.la/openapi.json - How to authenticate, with real requests and every failure explained: https://origami.publica.la/auth.md - When to use Origami and what a call costs, for agents: https://origami.publica.la/agents.md - Resource discovery: https://origami.publica.la/.well-known/ard.json - API catalog (RFC 9727): https://origami.publica.la/.well-known/api-catalog - Step-by-step agent skills: https://origami.publica.la/.well-known/agent-skills/index.json - This file in Markdown, plus pricing on its own: https://origami.publica.la/index.md · https://origami.publica.la/pricing.md - Narrower indexes: https://origami.publica.la/developers/llms.txt · https://origami.publica.la/resources/llms.txt ## Plans Subscription tiers sized by how many publications you work on: Starter (2), Pro (5), Max (30). Every tool is included in every plan and can be run as often as needed. Public monthly pricing: Starter $29 · Pro $49 · Max $249, with a 15-day free trial on Starter. publica.la customers get preferential pricing (Pro $24 · Max $124) instead of a trial. Plans are measured in publications, not AI credits — metered tools have generous daily fair-use limits. ## Languages Every page is published in English (/en/), Spanish (/es/) and Portuguese (/pt/). The URLs below are the English ones; replace the locale segment for the others. ## Key pages - Home: https://origami.publica.la/en - Product overview: https://origami.publica.la/en/product - EPUB validation (epubcheck): https://origami.publica.la/en/product/epub-validation - Accessibility checking & AI repair (Ace by DAISY): https://origami.publica.la/en/product/accessibility - Image alt text: find, generate (PDF) and report (EPUB): https://origami.publica.la/en/product/alt-text - Production quality checklist (Qualebook): https://origami.publica.la/en/product/quality - Metadata extraction (ONIX for Books 3): https://origami.publica.la/en/product/metadata - Metadata enrichment, with the source of every field: https://origami.publica.la/en/product/metadata-enrichment - Table of contents: extract, edit or generate with AI: https://origami.publica.la/en/product/indice - ONIX file creator: https://origami.publica.la/en/product/onix - AI book descriptions: https://origami.publica.la/en/product/descriptions - AI transparency & policy: https://origami.publica.la/en/ai - Pricing: https://origami.publica.la/en/pricing - Developer API documentation: https://origami.publica.la/en/api - Developers & agents (API, OpenAPI, MCP): https://origami.publica.la/en/developers - MCP server: what an assistant connected to a workspace can do: https://origami.publica.la/en/mcp - About Origami and publica.la: https://origami.publica.la/en/about - Contact: https://origami.publica.la/en/contact - Free single-file publishing tools (parent site): https://publica.la/en/tools ## Guides Plain-language guides answering common publishing questions (Article, HowTo and FAQPage structured data): - Resources hub: https://origami.publica.la/en/resources - The EU Accessibility Act (EAA) for EPUB publishers: https://origami.publica.la/en/resources/eu-accessibility-act-epub - How to fix the most common epubcheck errors: https://origami.publica.la/en/resources/fix-epubcheck-errors - EPUB accessibility checklist (WCAG 2.1 AA, Ace by DAISY): https://origami.publica.la/en/resources/epub-accessibility-checklist - ONIX for Books 3 metadata guide: https://origami.publica.la/en/resources/onix-metadata-guide - The best EPUB validation tools in 2026, compared (epubcheck, Ace by DAISY, FlightDeck, Sigil, Calibre, PubCoder, PaperbackKit and Origami): https://origami.publica.la/en/resources/best-epub-validation-tools ## Company publica.la — https://publica.la — the platform powering digital catalogues for publishers and institutions worldwide.