How Flatpay optimized marketing efficiency with Weld
“One of the biggest impacts has been unlocking new ways to buy media. Before, we didn’t have the data to back up strategic decisions – now we do.”
WELD CONNECT
A production-ready REST API for modern data teams.
Full programmatic control of Weld. Create connections, configure ELT syncs, manage schedules, and embed data pipelines directly into your product — all through clean, predictable REST endpoints.
POST/elt_syncs
▌Loved by data teams from around the world
USE CASES
Build, embed, and automate with full API control
From white-labeling integrations inside your product to orchestrating data workflows externally — Weld Connect gives you the building blocks.
WELD CONNECT
YourBrand
JSONSCHEMA
Add Connection
db.example.com
5432
Connect
RAG PIPELINE
AI-ready
Salesforce
Postgres
Zendesk
Notion
WELD
Sync & Transform
clean · dedupe · enrich
VECTOR DB
[0.82, 0.14, ...]
LLM
GPT / Claude
What was our Q4 revenue from enterprise accounts?
Based on Salesforce data synced 3 min ago: Q4 enterprise revenue was $2.4M across 47 accounts.
terminal
$ curl -X POST api.weld.app/v2/connections
-H "Authorization: Bearer sk_..."
-d '{
"connector_id": "postgres",
"name": "Production DB",
"config": { ... }
}'
✓ 201 Created
connection_id: conn_abc123
TRIGGER
Cron · 06:00
EXTRACT
Postgres → Weld
TRANSFORM
dbt Build
COMPLETE
Webhook ✓
Last run: 2 min ago · 12,847 rows synced · Duration: 34s
API KEY MANAGEMENT
| KEY | SCOPE | STATUS | CREATED |
|---|---|---|---|
| sk_prod_•••a3f8 | read/write | ACTIVE | Jan 12, 2025 |
| sk_stg_•••9b21 | read-only | ACTIVE | Mar 04, 2025 |
| sk_dev_•••c7e0 | read/write | REVOKED | Nov 18, 2024 |
Authorization: Bearer sk_prod_•••a3f8
SYNC DASHBOARD
All systems operational
SYNCS TODAY
1,247
ROWS MOVED
4.2M
SUCCESS RATE
99.8%
00:0006:0012:0018:00Now
DEVELOPER RESOURCES
Everything you need to get started
DOCUMENTATION
Step-by-step guides to get you building
Covers authentication, Connection Bridges, ELT sync configuration, stream selection, scheduling, and best practices. Start your first integration in minutes.
Read the docsWELD CONNECT DOCS
Fast and Seamless Integration
Why Choose Weld Connect?
Use Cases
Limitations
API REFERENCE
Complete OpenAPI specification
All endpoints, request/response schemas, authentication methods, and interactive testing. Download the spec in JSON or YAML for your own tooling.
Explore the APIPOST/elt_syncs
{
"connection_id": "conn_abc123",
"destination_schema_name": "hubspot",
"sync_interval": "0 * * * *"
}201Created
EXAMPLE APP
See the full API flow in action
Interactive demo showcasing connection creation, OAuth authentication, ELT setup, stream selection, and sync activation — no code required.
Try the exampleEXAMPLE FLOW
1Create Connection Bridge
2User completes OAuth
3Configure ELT sync
4Enable and run
HOW IT WORKS
From API key to live sync in four steps
All requests go to https://connect.weld.app
1
Authenticate
Generate an API key in Settings → API Keys. Include it as a Bearer token in every request.
x-api-key: YOUR_API_KEY2
Create a Connection Bridge
POST with a redirect URI and integration ID. Redirect the user to the returned authorize_url.
POST /openapi/connection_bridges3
Configure the ELT sync
Create a sync with the connection_id, destination schema, schedule, and any integration settings.
POST /elt_syncs4
Add streams and enable
Select source streams to sync, then enable. Your pipeline is live and running on schedule.
POST /elt_syncs/:id/enableKey endpoints
POST
/openapi/connection_bridges
Initiate OAuth or credential flow
GET
/connections/:id/settings
Fetch JSON Schema for settings
POST
/elt_syncs
Create a new ELT sync
POST
/elt_syncs/:id/source_streams
Add source streams
POST
/elt_syncs/:id/enable
Enable sync scheduling
POST
/elt_syncs/:id/disable
Disable sync scheduling
GET
/elt_syncs
List syncs with pagination
GET
/elt_syncs/:id/status
Get sync status
CODE EXAMPLES
Build with clean, predictable endpoints
RESTful design with consistent response formats, cursor-based pagination, and detailed status codes.
POST/elt_syncs
▌201Created
▌POST /elt_syncs/:id/enable
Enable scheduling. The sync runs on its cron interval automatically.
GET /elt_syncs/:id/status
Returns current status: NOT_STARTED, RUNNING, FAILED, or PAUSED.
GET /elt_syncs/:id/available_source_streams
Discover all available tables and streams for a given integration.
CONNECT
300+ pre-built connectors, all API-accessible
Programmatically create and manage connections to any of Weld's supported integrations — from CRMs and ad platforms to databases and file storage.
Shopify
→ View connector
Salesforce
→ View connector
Quickbooks
→ View connector
HubSpot
→ View connector
Monday.com
→ View connector
Facebook Ads
→ View connector
Google Ads
→ View connector
PostgreSQL
→ View connector
Airtable
→ View connector
Amazon Selling Partner API
→ View connector
Klaviyo
→ View connector
Google Analytics 4
→ View connectorCUSTOMER STORIES
The latest success stories from data-driven companies
How Holafly transformed data management and scaled globally with Weld
“Before Weld, we had to rely on custom Python scripts and manual processes that were time-consuming and error-prone.”
How Dishoom scaled data operations without scaling its team
“We’re still a team of three, but we’re often doing far more than the equivalent of three full-time employees. That’s down to how we're able to leverage systems, data, and processes.”
Inside VitaMoment’s Journey to KPI-Driven Growth and Data Ownership
“We’ve always been a KPI-driven company. But we wanted to scale that mindset across every team member, every team, every decision.”
How Danish Endurance boosted profitability by 77 % and transformed data management with Weld
“Before Weld, our data infrastructure was limited and we relied heavily on Excel files and custom Python scripts.”
How Female Invest centralized data management and saved resources with Weld
“Weld has saved us a ton of time, from not having data ready to having a fully functional data warehouse and connectors.”
How Soundboks streamlined data integration with Weld, S3, and Databricks
“By integrating Weld, Amazon S3, and Databricks, Soundboks built a modern data pipeline that automates data ingestion, improves reporting, and provides up-to-date visibility into sales performance”
How Roccamore unlocked better business insights with Weld
“We didn’t have a good data setup, so we lacked the business insights we needed. Weld has allowed us to set up a structured data infrastructure and access insights quickly.”
AWARD WINNING ETL PLATFORM
Recognized as a leading ETL platform for seamless data movement
Get started with Weld
Spend less time managing data and more time getting real insights.
