Documentation

Mosaic is infrastructure
for engineers who ship with AI.

Every Mosaic project gets a dedicated PostgreSQL 17 database, S3-compatible storage, Redis, real-time WebSocket subscriptions, user authentication, custom-domain email, a private git remote, and one-command container deploys — all driven by a single API key.

In one sentenceOne API key. One platform. Everything your app needs to ship.

What's in the platform

Database

SQL & pgvector

Dedicated Postgres 17 per project. Parameterized SQL over HTTP, no driver to install.

Object store

S3 Storage

Presigned upload & download URLs. Per-project bucket isolation.

Identity

User Auth

Magic links + email/password. Argon2 hashing, JWT sessions.

Live data

Realtime WS

Subscribe to row-level changes over WebSocket. Event + row filters.

Cache

Redis

Tenant-isolated KV, counters, lists, queues, pub/sub.

Compute

Deploy from Git

Node, Python, Go, Rust, PHP, Ruby, Java, Static — auto-detected.

Mail

Custom Domain Email

Bring your domain. DKIM, SPF, DMARC, IMAP, SMTP.

Edge

Custom Domains + SSL

CNAME or A record, automatic Let's Encrypt.

Spec

Full API Reference

Swagger, ReDoc, and the agent-facing skill.md.

How a request looks

Every endpoint is https://api.mosaic.site/v1/project/..., authenticated with one header:

# Run a query on your project's dedicated Postgres
curl -X POST https://api.mosaic.site/v1/project/{slug}/sql \
  -H "X-API-Key: $MOSAIC_API_KEY" \
  -d '{"query":"SELECT * FROM users WHERE id = $1","params":["abc-123"]}'

Where to start