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The Leonar API is organized around REST. It uses standard HTTP methods, returns JSON responses, and uses Bearer token authentication.

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Base URL

https://app.leonar.app/api/v1

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Authentication

Include your API key in the Authorization header: 
Authorization: Bearer leo_your_api_key

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Resources

Contacts

Manage contacts, search, enrich, and read custom field values.

Companies

Track companies, their contacts, and company custom fields.

Deals

Manage sales pipeline and deal stages.

Projects

Organize recruiting projects.

Sequences

Automate outreach campaigns.

Tasks

Track to-dos and follow-ups.

Messages

Send emails, LinkedIn messages.

Sourcing

Search and import candidates.

Enrichment

Find emails and phone numbers.

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Custom fields

Contacts and companies can include workspace-defined custom fields in the custom_data object.
  • use GET /contacts/custom-fields and GET /companies/custom-fields to discover valid keys
  • read values from custom_data on contact and company responses
  • update values with partial merge semantics on PUT /contacts/{id} and PUT /companies/{id}