Amazon S3 Connector

Amazon S3 is an object storage service that offers industry-leading scalability, data availability, security, and performance.

Start for free View documentation

4.8 on G2

Weld · Data Sources

Amazon S3Your 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.

Amazon S3

Destination

Host

account.amazon s3.com

Database

analytics_db

Overview

Amazon S3, both ways.
As a source or your warehouse.

Amazon S3 is an object storage service that offers industry-leading scalability, data availability, security, and performance. Weld works with Amazon S3 in both directions: replicate its tables into another warehouse, or use Amazon S3 as the warehouse your other sources load into. Either way the data lands in a clean, documented schema that analysts can query with SQL or dbt, and agents can query over the Weld MCP server.

Weld MCP server

Ask your agent.
It can reach Amazon S3.

Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It finds the Amazon S3 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 Amazon S3 tables do we have, and which one is the largest?

Looking up what the Amazon S3 connection has synced.

●weld·search_available_references

⎿raw.aws_s3.*

tables, columns and freshness

●weld·get_reference_schema

⎿columns, types and nullability

●weld·run_query

⎿select count(*) from {{raw.aws_s3.…}}

submitted

●weld·get_query_status

⎿DONE

●weld·get_query_result

⎿rows returned

✓Answered from Amazon S3 data in your warehouse

>Ask about your Amazon S3 dataMCP

Destinations

Load Amazon S3 into any warehouse.
Set up in minutes, no code.

Resources

Everything you need.
To get started.

Documentation

Amazon S3 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 Amazon S3 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 Amazon S3 ELT sync
curl -X POST https://connect.weld.app/elt_syncs \
  -H "x-api-key: $API_KEY" \
  -d '{
    "connection_id": "conn_abc123",
    "integration_id": "aws-s3",
    "destination_schema_name": "aws-s3_data",
    "sync_interval": "0 * * * *"
  }'
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