Leadian API

Introduction

Find leads, reveal contacts and manage lists from your own code.

The Leadian API is a JSON over HTTPS API. It does everything the app does with the same credits and the same prices: credits are held when a search starts, only leads delivered are charged, and the rest comes back.

Base URL

https://leadian.me/api/v1

Create a key on the Developer page, then send it in the Authorization header.
Requests and responses are JSON. Field names use snake_case and dates are ISO 8601.
Every object carries an object field, like search, lead, reveal or lead_list.
Every response carries Leadian-Version: 2026-10-01 and an X-Request-Id. Quote the request id when you contact support.

Quick start

Start a search, then check it until it is completed. Searches usually take 30 to 120 seconds.

Terminal

curl -X POST "https://leadian.me/api/v1/searches" \
  -H "Authorization: Bearer $LEADIAN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"Heads of Growth at Series B SaaS companies in London","count":25}'

Tip. Instead of checking again and again, add a webhook and Leadian will tell you when the search is done.