title: Reference Documentation updated: 2026-06-13 #

These docs describe current, verified behavior of Tempest. They explain the implementation at a high level and introduce the AT Protocol/PDS concepts needed to understand that implementation.

Graduated reference docs:

• Architecture
• SQLite Storage
• XRPC HTTP Surface
• Repository Core
• Record APIs
• Blobs
• Account Migration
• Migration and Account Lifecycle
• Security, OAuth, and Delegated Access
• Admin and Operator Operations
• Deployment Guide
• Deployment and Observability
• Initial Release Readiness
• PDS Compatibility Matrix
• Lexicon Schemas
• Interop and Integration Testing

• Budget

Additional reference notes:

• Identity Troubleshooting
• Sync and Firehose

When a spec graduates, docs/specs/<topic>.md becomes a short pointer to the reference doc and its verification commands.