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lemlist People Database API

Search the lemlist B2B people and company database, list its filters, and manage saved personas.

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

Tagged areas include People Database and Lead Generation. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 8 operations across 7 paths, and defines 9 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 7 paths 9 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 People Database API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (basicAuth).

Paths & Operations 8

Across 7 paths, the API surfaces 8 operations — 1 DELETE, 4 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.

People database 8
GET
/database/filters
Filters
1 param → 200
POST
/database/people
People database
1 param body → default
GET
/schema/people
People schema
1 param body → default
POST
/database/companies
Companies database
1 param body → default
GET
/schema/companies
Companies schema
1 param body → default
GET
/database/personas
List Personas
listPersonas 1 param → 200400401403500
POST
/database/personas
Create Persona
createPersona body → 201400401403409500
DELETE
/database/personas/{personaId}
Delete Persona
deletePersona 1 param → 200400401403404500

Schemas 9

The contract defines 9 schemas that model the data the API accepts and returns. The most detailed are CompaniesSchema (29 properties), PeopleSchema (28 properties), Persona (6 properties), PersonaFilter (4 properties). Each schema is shown below with its type and property counts.

PersonaError
object
Error envelope returned by the persona endpoints.
2 properties
DatabaseFilter
object
Saved search criteria for querying the People database.
3 properties
Persona
object
A People Database persona: a named, reusable set of People Database filters saved by your team. A persona id can be referenced elsewhere in the API, for exampl…
6 properties
PersonaCreateResponse
object
1 property
PersonaListResponse
object
1 property
PeopleSchema
object
A person record from lemlist's People database.
28 properties
PersonaFilter
object
One People Database filter of a persona. in includes matching values, out excludes them. There is no type property: it is derived from filterId server-side.
4 properties 1 required
CompaniesSchema
object
A company record from lemlist's Companies database.
29 properties
PersonaDeleteResponse
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

lemlist-people-database-api-openapi.yml Raw ↑

Other APIs lemlist publishes across the network.

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

This is an independent, third-party profile of lemlist People Database 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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