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Database

Connect Firebase to any app with two-way sync.

Two-way sync Firebase across all your CRMs, databases, data warehouses, EDI systems, and AI tools, with custom workflows tailored to your data.

  • SOC 2 and 6 other compliance frameworks
  • POC with real engineers in minutes

Adopted by fast-scaling companies moving mission-critical data in real time

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Object catalog

What Stacksync syncs in Firebase.

These objects sync between Firebase and any connected system, with field-level mapping and conflict resolution. Custom fields are picked up from the live schema where Firebase exposes them.

Firestore Collections
Top-level groupings of documents that a sync maps to tables or SaaS objects.
Firestore Documents
Schemaless JSON-like records, the primary unit synced to and from external systems.
Subcollections
Nested collections under documents, typically flattened into related tables during sync.
Realtime Database Nodes
JSON tree paths in the older Realtime Database, synced by path.
Authentication Users
User accounts read into CRMs and warehouses for customer records.
Cloud Storage Objects
Files referenced from documents; usually synced as metadata plus URLs.
Cloud Functions Triggers
Server-side hooks that fire on document changes and can push updates outward.
API surface

How Stacksync connects to Firebase.

The connector runs on Firebase's native API. Stacksync manages authentication, rate limits, retries, and schema changes so your team does not maintain integration code.

Connection
REST and gRPC APIs, typically accessed through the Firebase Admin SDK
Authentication
Google service account credentials (IAM) for server-side access; Firebase Auth tokens for client contexts
Change detection
Real-time snapshot listeners on Firestore queries and Cloud Functions triggers on document changes
Rate limits
Subject to Firestore's documented operation quotas and per-document write throughput limits

Sync directions

  • Read Supported
  • Write Supported
  • Change data capture Not available
  • Webhooks Not available
What ships with Firebase

Connect Firebase for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every connection.

Real-time

Two-way sync

Changes in Firebase instantly reflect across connected systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Firebase data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.

At scale

Event queues

Handle millions of events per minute without losing a single Firebase record.

Observability

Monitoring

Track your Firebase sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions.

Use cases

What teams run on the Firebase connector.

Firebase is bought by mobile and web product engineering teams building on Google's app platform; it supplies the app backend, with Firestore and Realtime Database for state, Authentication for identity, Cloud Storage for files, and Cloud Functions for server logic. Because the app writes user and event data there first, Firebase accumulates product data that the rest of the business, including CRM, warehouse, and support tooling, cannot see without an integration layer.

  • Mobile and web app developers
  • Backend engineering
  • Product engineering
  • Data engineering

  1. Sync Firestore user and account documents into a CRM so go-to-market teams see live product data.

  2. Mirror Firestore collections into Postgres or a warehouse to run SQL analytics on app data.

  3. Write CRM-side changes (plan, status, owner) back into Firestore documents the app reads.

  4. Combine Firebase Authentication users with billing and CRM records into one customer table.

  5. Replace one-off Cloud Functions export code with managed, continuous sync.

  6. Syncing Firestore Collections and Documents into PostgreSQL so backend and analytics teams query app data in SQL while approved changes flow back to the app.

All Firebase integrations

Pick the system you need to keep in sync with Firebase. Each page covers the sync setup, field mapping, and common workflows for that pair.

CRM · 38

ERP · 39

Database · 49

Data warehouse · 29

Business productivity · 39

Accounting and finance · 17

How it works

Set up Firebase in minutes, without APIs.

Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.

  1. 01

    Connect your apps

    Authenticate Firebase with its native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Firebase connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Firebase objects to sync — Stacksync auto-detects the schema, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Firebase
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Firebase database
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Firebase connector FAQ

What can I sync with the Firebase connector?

Firebase's core objects — Firestore Collections, Firestore Documents, Subcollections, Realtime Database Nodes and custom fields — can sync with any of 302 other systems. Every integration is real-time and bidirectional, with field-level mapping and conflict resolution.

How does Stacksync connect to Firebase?

Via REST and gRPC APIs, typically accessed through the Firebase Admin SDK, authenticated with Google service account credentials (IAM) for server-side access; Firebase Auth tokens for client contexts. Changes are detected as follows — real-time snapshot listeners on Firestore queries and Cloud Functions triggers on document changes. Stacksync manages rate limits, retries, and schema changes automatically.

Is the Firebase connector two-way?

Yes. Changes made in Firebase propagate to the connected system and vice versa, in milliseconds. One-way flows are also supported when a direction should stay read-only.

How long does a Firebase integration take to set up?

Most Firebase integrations go live in minutes: authenticate Firebase and the other system, pick objects and fields, and enable the sync. No code and no infrastructure to manage.

Is Firebase data secure in transit?

Stacksync is SOC 2 Type II, ISO 27001, GDPR and HIPAA compliant. Firebase data is encrypted in transit, and a zero-persistent-storage architecture means records are not retained after a sync operation.

SECURITY

Security teams trust Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more
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