Firebase Data Connect

A comprehensive assistant for building Firebase SQL Connect (formerly Data Connect) backends with PostgreSQL and GraphQL. It handles the full workflow from schema design with table directives and relationships to writing type-safe queries and mutations, plus generating SDKs for web, mobile, and Flutter. The skill emphasizes GraphQL-first development over raw SQL, walks through proper authorization patterns, and covers advanced features like vector search and full-text search. Solid for anyone building relational apps on Firebase who wants to skip the SQL boilerplate and get type-safe client code generated automatically.

skills.sh installs: 175.9K
GitHub stars: 508
last updated: Aug 21, 2026

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Install

$ npx -y skills add firebase/agent-skills --skill firebase-data-connect --agent claude-code

Installs into .claude/skills of the current project.

Files

Firebase SQL Connect

Firebase SQL Connect is a relational database service using Cloud SQL for PostgreSQL with GraphQL schema, auto-generated queries/mutations, and type-safe SDKs.

[!NOTE] Product Rename: Firebase Data Connect was renamed to Firebase SQL Connect. All instructions, references, and examples in this skill repository referring to "Data Connect" or "Firebase Data Connect" apply to "SQL Connect" and "Firebase SQL Connect" as well.

Project Structure

dataconnect/
├── dataconnect.yaml      # Service configuration
├── seed_data.gql         # LOCAL ONLY — prototype/test data
├── schema/
│   └── schema.gql        # Data model (types with @table)
└── connector/
    ├── connector.yaml    # Connector config + SDK generation
    ├── queries.gql       # Queries
    └── mutations.gql     # Mutations

Key Tools for Validation

Rely on these two mechanisms to ensure project correctness:

Review GraphQL Schema: Both user-defined and generated extensions (in .dataconnect/schema/main/).
Validate Operations: Run npx -y firebase-tools@latest dataconnect:compile against the schema.

SKILL.md on GitHub