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Connect MongoDB to any app with two-way sync.

Two-way sync MongoDB 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
Setup guide: how Stacksync connects to MongoDB

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

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Object catalog

What Stacksync syncs in MongoDB.

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

Databases
Logical groupings of collections that scope a sync connection.
Collections
The table-like sync unit; each collection maps to a table or object in the paired system.
Documents
BSON records created, updated, and deleted during syncs, keyed by _id.
Embedded documents and arrays
Nested structures that syncs flatten or map to related records in relational targets.
Indexes
Keep lookups by sync key fast on large collections.
Views
Read-only aggregation-defined sources for filtered sync datasets.
Change streams
The oplog-backed event feed that powers real-time change capture.
GridFS files
Chunked file storage whose metadata can be referenced by synced documents.
API surface

How Stacksync connects to MongoDB.

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

Connection
MongoDB wire protocol via official drivers; Atlas additionally offers an administration REST API for cluster management
Authentication
Database credentials (username/password) or TLS/SSL X.509 certificate (.pem upload), entered individually or via a MongoDB connection string (SRV or standard); Stacksync IP allowlisting required
Change detection
MongoDB oplog and change streams (requires the database to run as a replica set — even single-node); Stacksync leverages these built-in tools to track changes in real time

Sync directions

  • Read Supported
  • Write Supported
  • Change data capture Supported
  • Webhooks Not available
MongoDB connector documentation
What ships with MongoDB

Connect MongoDB 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 MongoDB instantly reflect across connected systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever MongoDB 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 MongoDB record.

Observability

Monitoring

Track your MongoDB 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 MongoDB connector.

MongoDB is adopted by backend and platform engineering teams as the operational database behind their applications, frequently run as Atlas, MongoDB's managed cloud service. Because it stores live application state - Documents in Collections with flexible, nested schemas - it accumulates strong data gravity: product, user, and event data that downstream analytics, CRM, and ERP systems need access to.

  • Backend engineering
  • Data engineering
  • Database administrators
  • Platform engineering

  1. Sync MongoDB collections with a CRM so customer documents written by the application appear as CRM records, and CRM edits flow back as document updates.

  2. Replicate operational MongoDB data into a relational database, flattening nested documents into normalized tables for SQL reporting.

  3. Capture change stream events and propagate them to SaaS tools in near real time instead of running batch exports.

  4. Keep a MongoDB-backed product catalog aligned with an ERP's item master in both directions.

  5. Consolidate documents from multiple clusters or tenants into a single warehouse-facing store.

  6. Replicate Collections and Documents to Postgres or a warehouse in real time using Change streams, flattening Embedded documents and arrays into relational tables for SQL and BI access.

All MongoDB integrations

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

CRM · 45

ERP · 41

Database · 49

Data warehouse · 29

Business productivity · 38

Accounting and finance · 17

How it works

Set up MongoDB 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 MongoDB 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
    MongoDB connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the MongoDB 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 · MongoDB
    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
    MongoDB database
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

MongoDB connector FAQ

What can I sync with the MongoDB connector?

MongoDB's core objects — Databases, Collections, Documents, Embedded documents and arrays 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 MongoDB?

Via MongoDB wire protocol via official drivers; Atlas additionally offers an administration REST API for cluster management, authenticated with Database credentials (username/password) or TLS/SSL X.509 certificate (.pem upload), entered individually or via a MongoDB connection string (SRV or standard); Stacksync IP allowlisting required. Changes are detected as follows — mongoDB oplog and change streams (requires the database to run as a replica set — even single-node); Stacksync leverages these built-in tools to track changes in real time. Stacksync manages rate limits, retries, and schema changes automatically.

Is the MongoDB connector two-way?

Yes. Changes made in MongoDB 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 MongoDB integration take to set up?

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

Is MongoDB data secure in transit?

Stacksync is SOC 2 Type II, ISO 27001, GDPR and HIPAA compliant. MongoDB 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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