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lemlist

lemlist Contacts API

CRM-side contacts, contact lists, list membership and exports.

Documentation Provider Profile APIs.io OpenAPI GitHub

lemlist Contacts API is one of 22 APIs that lemlist publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Contacts and CRM. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 8 operations across 5 paths, and defines 2 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://api.lemlist.com/api.

8 operations 5 paths 2 schemas 1 DELETE4 GET3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.lemlist.com/api
Authentication
HTTP Basic
Resource Areas
1

Authentication & Security 1

lemlist Contacts API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (basicAuth).

Paths & Operations 8

Across 5 paths, the API surfaces 8 operations — 1 DELETE, 4 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.

Contacts 8
GET
/contacts/{idOrEmail}
Get contact
2 params → 200
DELETE
/contacts/{idOrEmail}
Delete Contact
1 param → 200401404409405
GET
/contacts
Get contacts
1 param → 200
POST
/contacts
Add and update contact
body → 201200400401
GET
/contacts/lists
Get Contact Lists
1 param → 200400401405
POST
/contacts/lists
Create Contact List
body → 201400401405
POST
/contacts/lists/{listId}/entities
Add or Remove Contacts in a List
2 params body → 200400401404405500
GET
/contacts/export
Export Contact List
2 params → 200400401

Schemas 2

The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are Contact (11 properties), FieldRejection (6 properties). Each schema is shown below with its type and property counts.

FieldRejection
object
A value lemlist refused to write on a Contact or Company, with the reason why. Surfaced under fieldRejections[] on those objects; filter a list endpoint to onl…
6 properties
Contact
object
A contact record in your CRM. Not to be confused with a lead which is a contact specifically added to a campaign.
11 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lemlist-contacts-api-openapi.yml Raw ↑

Other APIs lemlist publishes across the network.

lemlist MCP Server
AE Profile APIs.io
lemlist Campaigns API
AE Profile APIs.io
lemlist Sequences API
AE Profile APIs.io
lemlist Leads API
AE Profile APIs.io
lemlist People Database API
AE Profile APIs.io
lemlist Enrich API
AE Profile APIs.io
lemlist Inbox API
AE Profile APIs.io
lemlist Companies API
AE Profile APIs.io
lemlist Signal Agents API
AE Profile APIs.io
lemlist Webhooks API
AE Profile APIs.io
lemlist Unsubscribes API
AE Profile APIs.io
lemlist Schedules API
AE Profile APIs.io
#Contacts#CRM
← Back to L APIs
API Details
ID
lemlist:lemlist-contacts-api
Base URL
https://api.lemlist.com/api
Docs
https://developer.lemlist.com/api-reference
Provider
lemlist
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