Dex Guide
Dex Dashboard
API

Authentication

How to authenticate requests to the Dex API.

To call Dex API endpoints, include your API key as a Bearer token.

Base URL

https://api.prod.getdex.com

Required header

Authorization: Bearer dex_your_api_key
Content-Type: application/json
Keep your API key private. Never expose it in client-side apps, public repos, or screenshots.

Create an API key

  1. Open Settings → Workflow → Dex API & MCP.
  2. Click Create API key, give the key a name, choose its access, and click Create key.
  3. Copy the key from the dialog, including its dex_ prefix, and store it somewhere safe.

A full key is dex_ followed by 64 characters. If Dex rejects a key you just created, check that the whole key was copied.

Dex shows a key in full only once, in the dialog right after you create or regenerate it. After that, the Settings list shows a masked key such as dex_••••••••a1b2, so you can tell keys apart but can't copy them again. If you lose a key, regenerate it or create a new one.
Dex Professional required. Creating a personal key, regenerating it and calling the API with it all need the Dex Professional plan.
Regenerating replaces your key. Open the key's menu in the list and choose Regenerate. The existing key stops working immediately, so any integration using it, including Zapier, has to be updated with the new one.

Rate limits

Each API key can make 100 requests per minute to each endpoint. Every key keeps its own count for every endpoint, so a second key, or a call to a different endpoint, doesn't use up the first one's allowance. Counts reset every minute.

Going over it returns HTTP 429 with the error code rate_limited. The connection isn't dropped. Wait for the number of seconds in the Retry-After header, then retry. Every response also carries x-ratelimit-limit, x-ratelimit-remaining and x-ratelimit-reset headers (the reset is in seconds from now), so you can slow down before you hit the limit. Spread requests out rather than sending them in parallel bursts.

Quick test

curl --request GET \
  --url https://api.prod.getdex.com/v1 \
  --header 'Authorization: Bearer dex_your_api_key'

API Overview

Human-friendly entrypoint to Dex API docs.

Filtering contacts

The where filter DSL for the contacts endpoints — every key, its value shapes, and how conditions combine.

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