Dex Editor

Job editor — mappers, drivers, test runner

In test

Python

FastAPI MCP Visual Builder

Dex Editor is where you define Data Exchange jobs. Visual editor to build transformation mappers, library of ready-to-use drivers, connection tester for each driver, inline test runner that runs the job with sample data (without touching real systems), pre-run validator that explains in plain text what is about to happen, and job templates for quick starts. Compatible with feature flags for dev/staging/prod environments.

Features

Visual mapper builder (drag & drop)
Drivers: Kafka, RabbitMQ, resilient Webhook, REST, file system, SQL
Connection tester for each driver
Inline test runner with sample data
Pre-run validator (explains what the job will do)
Job templates for common patterns
Workspace watcher (auto-reload changed jobs)
MCP server exposed (tools accessible from Dex Assistant)
Import / export jobs as JSON

Configuration

HTTP port (default 3002)
DB engine
Workspace path: jobs folder
DEXSUITE_MODE: RUN | DESIGN
Feature flags: ALLOW_RUN, ALLOW_RUN_CHAIN, TRACKING_HIDDEN
Connection string per driver (in mapper)

Technical prerequisites

Python 3.11+ (with venv) — for the MCP backend
Node.js 20+ — for the UI
SQL DB: SQLite (default) / PostgreSQL / MariaDB
Reachable Dex Hub (optional, to push jobs to the queue)