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lemlist Webhooks API

Webhook subscription management - list, create with an optional shared secret, and delete. 76 event types are documented.

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

Tagged areas include Webhook. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 3 operations across 2 paths, and defines 1 schema. 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.

3 operations 2 paths 1 schemas 1 DELETE1 GET1 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 Webhooks API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (basicAuth).

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 1 DELETE, 1 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Webhooks 3
GET
/hooks
Get All webhooks
→ 200
POST
/hooks
Add a webhook
4 params body → 200default
DELETE
/hooks/{hookId}
Delete a webhook
2 params body → 200404

Schemas 1

The contract defines 1 schema that model the data the API accepts and returns. The most detailed is Webhook (6 properties). Each schema is shown below with its type and property counts.

Webhook
object
Webhooks send real-time HTTP notifications upon campaign events (opens, clicks, replies, etc.).
6 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lemlist-webhooks-api-openapi.yml Raw ↑

Other APIs lemlist publishes across the network.

lemlist MCP Server
lemlist Campaigns API
lemlist Sequences API
lemlist Leads API
lemlist People Database API
lemlist Enrich API
lemlist Inbox API
lemlist Contacts API
lemlist Companies API
lemlist Signal Agents API
lemlist Unsubscribes API
lemlist Schedules API
Where this information came from

This is an independent, third-party profile of lemlist Webhooks API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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