LeadQuasar
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REST APIConnect LeadQuasar with your applications

Your leads and CRM,
in your own code

Read your saved lists and the leads you can see, and read and write your CRM, with a Bearer key and plain JSON.

  • Read your lists and their leads
  • Fetch a lead you can see in full
  • Read and update your CRM
  • Bearer keys you can revoke
Get an API keyView documentation
  • No credit card required
  • Free forever plan
  • On Max
Example data

What you get with REST API

  • Live Data

    Your lists and leads as they are now.

  • Two-way CRM

    Read records, add leads, move stages.

  • Secure Keys

    Bearer tokens you can revoke any time.

  • Your Lists

    Page through 100 leads at a time.

  • Plain JSON

    Readable fields and clear errors.

  • Build Your Own

    Use LeadQuasar in your own tools.

How it works

Start using the LeadQuasar API in 3 simple steps.

  1. 1

    Make a Key

    Settings, Integrations.

  2. 2

    Send It as Bearer

    Authorization: Bearer …

  3. 3

    Call /api/v1/me

    A cheap test of the key.

Example Request

List your saved lists, and what comes back:

curl https://leadquasar.com/api/v1/lists \  -H "Authorization: Bearer lq_live_…" {  "lists": [    {      "id": "…",      "name": "Texas dentists",      "leads": 120,      "updatedAt": "2026-10-22T09:30:00.000Z"    }  ]}

Supported Endpoints

Choose from these requests:

  • GET/api/v1/meThe account and plan the key belongs to
  • GET/api/v1/listsYour saved lists
  • GET/api/v1/lists/{id}/leadsA list's leads, 100 a page, with a cursor
  • GET/api/v1/leads/{id}One lead you can see in full
  • GET/api/v1/crmEvery CRM record, the stages and the currency
  • POST/api/v1/crmAdd leads (leadIds) or your own contacts
  • PATCH/api/v1/crmMove a record, or set its value, notes or follow-up

Start building with the LeadQuasar API today

Build lists free, then read them from your own code.

Get an API key
In detail

What the REST API integration does

The LeadQuasar API reads what your account already has, your saved lists and the leads you can see, and reads and writes your CRM, so your own tools can use them.

  • Lists and leads

    List your saved lists, page through a list's leads 100 at a time, or fetch one lead you have unlocked.

  • Your CRM

    Read every record with the pipeline's stages, add LeadQuasar leads or your own contacts, and move records, set values, notes and follow-ups.

  • Simple keys

    Make a key in Settings → Integrations and send it as a Bearer token. Up to 5 keys per account; revoke one any time.

  • Plain JSON

    Every response is JSON with readable field names, and every error says what to fix.

Max plan. Part of Max ($29.99/month). Compare plans

Set it up

  1. 1Open Settings, then Integrations, and make an API key. It is shown once: copy it.
  2. 2Send it on every request as Authorization: Bearer lq_live_…
  3. 3Call GET /api/v1/me first: it answers with your account and plan, a cheap way to test the key.

Endpoints

RequestWhat it does
GET /api/v1/meThe account and plan the key belongs to
GET /api/v1/listsYour saved lists
GET /api/v1/lists/{id}/leadsA list's leads, 100 a page, with a cursor
GET /api/v1/leads/{id}One lead you can see in full
GET /api/v1/crmEvery CRM record, the stages and the currency
POST /api/v1/crmAdd leads (leadIds) or your own contacts
PATCH /api/v1/crmMove a record, or set its value, notes or follow-up
FAQ

REST API: questions

Can the API search the whole lead database?

No. It reads what your account already has: saved lists, leads you can see and your CRM. Build lists in LeadQuasar or with its AI, then read them here.

Is there a limit?

Each key has a daily cap on list pages, and the API answers 429 with a plain message when it is reached.

Can Claude or ChatGPT use LeadQuasar?

Yes. LeadQuasar's MCP server lets them count and search businesses by industry and place, without contact details.

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