Heroku PostgreSQL Connector

PostgreSQL is a powerful, open-source object-relational database system known for its robustness, extensibility, and compatibility.

Start for free View documentation

4.8 on G2

Weld · Data Sources

Heroku PostgreSQLYour 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.

Heroku PostgreSQL

Data source

Authenticating...

Ready to connect

Overview

Heroku PostgreSQL in your warehouse.
Ready for your agents.

PostgreSQL is a powerful, open-source object-relational database system known for its robustness, extensibility, and compatibility. Weld's Heroku PostgreSQL connector is fully managed: it extracts data from Heroku PostgreSQL, 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 Heroku PostgreSQL.

Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It finds the Heroku PostgreSQL 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 Heroku PostgreSQL tables do we have, and which one is the largest?

Looking up what the Heroku PostgreSQL connection has synced.

●weld·search_available_references

⎿raw.heroku_postgres.*

tables, columns and freshness

●weld·get_reference_schema

⎿columns, types and nullability

●weld·run_query

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

submitted

●weld·get_query_status

⎿DONE

●weld·get_query_result

⎿rows returned

✓Answered from Heroku PostgreSQL data in your warehouse

>Ask about your Heroku PostgreSQL dataMCP

Destinations

Load Heroku PostgreSQL into any warehouse.
Set up in minutes, no code.

Resources

Everything you need.
To get started.

Documentation

Heroku PostgreSQL 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 Heroku PostgreSQL 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 Heroku PostgreSQL ELT sync
curl -X POST https://connect.weld.app/elt_syncs \
  -H "x-api-key: $API_KEY" \
  -d '{
    "connection_id": "conn_abc123",
    "integration_id": "heroku-postgres",
    "destination_schema_name": "heroku-postgres_data",
    "sync_interval": "0 * * * *"
  }'
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