Instant DB

Realtime graph database with sync

Free tier + paidDatabases & backendinstantdb.com

What it is

An open-source realtime database modelled on Firebase but with real relations and a graph query language, offering optimistic updates, offline support and presence out of the box. The free plan gives 1GB of storage with unlimited API requests, one team member per app, and explicitly permits commercial use.

Why it earns a slot

Free projects are never paused, which is rare here — your weekend demo still works in six months. Ships a hosted MCP server at mcp.instantdb.com plus an agent skill that teaches models its schema syntax.

Know before you commit

Small team and a young ecosystem, so models know it far less well than Firebase or Supabase — expect to paste docs into context. The jump to Pro is $30, steeper than Supabase's $25.

Getting started

npx skills add instantdb/skills

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Pricing snapshot

Free: 1GB storage, unlimited API requests, 1 team member per app, never paused, commercial use allowed. Pro $30/mo (10GB, then $0.125/GB, 10 members, 7-day backups).

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Instant DB (https://www.instantdb.com) for this project, then use it only if it fits what we are already building.
Context: Realtime graph database with sync. An open-source realtime database modelled on Firebase but with real relations and a graph query language, offering optimistic updates, offline support and presence out of the box. The free plan gives 1GB of storage with unlimited API requests, one team member per app, and explicitly permits commercial use.
Reviewer notes (general, not written for this codebase): Free projects are never paused, which is rare here — your weekend demo still works in six months. Ships a hosted MCP server at mcp.instantdb.com plus an agent skill that teaches models its schema syntax.
Watch out for: Small team and a young ecosystem, so models know it far less well than Firebase or Supabase — expect to paste docs into context. The jump to Pro is $30, steeper than Supabase's $25.
Pricing: Free: 1GB storage, unlimited API requests, 1 team member per app, never paused, commercial use allowed. Pro $30/mo (10GB, then $0.125/GB, 10 members, 7-day backups).
Setup: npx skills add instantdb/skills
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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Named in the wiringFirebase

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