Horizon PDF diagnostics

Access boundary: Current capability and authority required.

Implemented diagnostics/subscription contracts; runtime capability, private validator and scanner gates apply.

Surfaces: Web, REST and MCP diagnostics; browser administrator alone manages recurring subscription.

Read the engineering guide · All features

Capabilities

1. EUR30 monthly subscription from available credits, including remaining welcome credits for the first period; private /app/plan entry
2. Immutable recurring consent by a browser administrator
3. Cancellation, renewal and suspension without debt; top-up remains unavailable
4. 100 attempts per calendar month under atomic quota
5. Pinned private veraPDF for PDF/UA-1/-2 and PDF/A-1b/2b/3b/4, with official positive/negative corpus and separate offline/hosted qualification
6. Exact-byte reports, history and JSON export
7. Web/MCP diagnostics with required human review; same-key recovery for uncertain network responses and new-key independent checks
8. Public/server availability share HORIZON_ENABLED, private validator and production scanner gates; activation after hosted qualification, never legal certification
9. PDF-accessibility exclusions apply to originals and existing reports; person-redacted recovery without web bypass
10. Home → signed-in workspace → home preserves private capability reads and performs one fresh public read after failure, without writes or stale availability inference

REST operations

• GET /api/documents/{id}/validation
• POST /api/documents/{id}/validation

Read the REST integration guide for authentication, errors and contract discovery.

MCP tools

• get_pdf_validation
• validate_pdf

Read the MCP integration guide for scope, approval and host boundaries.