Azure Cosmos DB Connector

Azure Cosmos DB is a globally distributed database service, offering multi-model support and scalability for app development.

Start for free View documentation

4.8 on G2

Weld · Data Sources

Azure Cosmos DBYour warehouseLive

Pick the tables to sync, and they appear here with their status.

Lands in

Queryable over MCP

How it works

Set up in minutes.
No code, no maintenance.

Azure Cosmos DB

Data source

Authenticating...

Ready to connect

Overview

Azure Cosmos DB in your warehouse.
Ready for your agents.

Azure Cosmos DB is a globally distributed database service, offering multi-model support and scalability for app development. Weld's Azure Cosmos DB connector is fully managed: it extracts data from Azure Cosmos DB, loads it into your warehouse, and keeps it in sync. The data lands in a clean, documented schema with agent context attached, so analysts can query it with SQL or dbt, and agents can query it over the Weld MCP server without guessing at tables or joins.

Weld MCP server

Ask your agent.
It can reach Azure Cosmos DB.

Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It finds the Azure Cosmos DB tables Weld has synced and queries your warehouse.

DiscoverSynced tables, columns and freshness
QuerySQL against your warehouse
OperateCheck, rerun and refresh syncs

Set up the MCP server

Claude CodeOpus 5

ConnectedWeld MCP

Which Azure Cosmos DB tables do we have, and which one is the largest?

Looking up what the Azure Cosmos DB connection has synced.

●weld·search_available_references

⎿raw.azure_cosmos_db.*

tables, columns and freshness

●weld·get_reference_schema

⎿columns, types and nullability

●weld·run_query

⎿select count(*) from {{raw.azure_cosmos_db.…}}

submitted

●weld·get_query_status

⎿DONE

●weld·get_query_result

⎿rows returned

✓Answered from Azure Cosmos DB data in your warehouse

>Ask about your Azure Cosmos DB dataMCP

Destinations

Load Azure Cosmos DB into any warehouse.
Set up in minutes, no code.

Resources

Everything you need.
To get started.

Documentation

Azure Cosmos DB setup guide

Step-by-step instructions to configure and start syncing.

MCP server

Connect your agents

Set up Claude, Cursor, ChatGPT or Codex against your Weld workspace.

Weld Connect API

Build custom connectors

Use the Weld Connect API to build and publish your own connector.

FAQ

Common questions

Answers to frequently asked questions about Weld connectors.

Weld Connect API

Set it up in code.
One REST API.

Use the Weld Connect REST API to create Azure Cosmos DB connections, configure ELT syncs, and manage pipelines entirely through code. Built for embedding, automation, and CI/CD workflows.

Explore Weld Connect API reference

POST/elt_syncs

# Create a Azure Cosmos DB ELT sync
curl -X POST https://connect.weld.app/elt_syncs \
  -H "x-api-key: $API_KEY" \
  -d '{
    "connection_id": "conn_abc123",
    "integration_id": "azure-cosmos-db",
    "destination_schema_name": "azure-cosmos-db_data",
    "sync_interval": "0 * * * *"
  }'
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