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Langfuse Projects API

The Projects API from Langfuse — 4 operation(s) for projects.

Langfuse Projects API is one of 28 APIs that Langfuse publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Project. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 7 operations across 4 paths, and defines 8 schemas. It is described by OpenAPI 3.0.1, at version 1.0.

Requests are made against the base URL https://cloud.langfuse.com/api/public.

7 operations 4 paths 8 schemas 2 DELETE2 GET2 POST1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
1.0
Base URL
https://cloud.langfuse.com/api/public
Authentication
HTTP Basic
Resource Areas
1

Authentication & Security 1

Langfuse Projects API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (BasicAuth).

Paths & Operations 7

Across 4 paths, the API surfaces 7 operations — 2 DELETE, 2 GET, 2 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.

Projects 7
GET
/api/public/projects
Get Project associated with API key (requires project-scoped API key). You can use GET /api/public/organizations/projects to get all projects with an organization-scoped key.
projects_get → 200400401403404405
POST
/api/public/projects
Create a new project (requires organization-scoped API key)
projects_create body → 200400401403404405
PUT
/api/public/projects/{projectId}
Update a project by ID (requires organization-scoped API key).
projects_update 1 param body → 200400401403404405
DELETE
/api/public/projects/{projectId}
Delete a project by ID (requires organization-scoped API key). Project deletion is processed asynchronously.
projects_delete 1 param → 202400401403404405
GET
/api/public/projects/{projectId}/apiKeys
Get all API keys for a project (requires organization-scoped API key)
projects_getApiKeys 1 param → 200400401403404405
POST
/api/public/projects/{projectId}/apiKeys
Create a new API key for a project (requires organization-scoped API key)
projects_createApiKey 1 param body → 200400401403404405
DELETE
/api/public/projects/{projectId}/apiKeys/{apiKeyId}
Delete an API key for a project (requires organization-scoped API key)
projects_deleteApiKey 2 params → 200400401403404405

Schemas 8

The contract defines 8 schemas that model the data the API accepts and returns. The most detailed are ApiKeySummary (7 properties), ApiKeyResponse (6 properties), Project (5 properties), ProjectDeletionResponse (2 properties). Each schema is shown below with its type and property counts.

ApiKeyList
object
List of API keys for a project
1 property 1 required
ApiKeyDeletionResponse
object
Response for API key deletion
1 property 1 required
ProjectDeletionResponse
object
2 properties 2 required
ApiKeySummary
object
Summary of an API key
7 properties 4 required
Projects
object
1 property 1 required
ApiKeyResponse
object
Response for API key creation
6 properties 5 required
Project
object
5 properties 4 required
Organization
object
2 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

langfuse-projects-api-openapi.yml Raw ↑

Other APIs Langfuse publishes across the network.

Langfuse AnnotationQueues API
Langfuse BlobStorageIntegrations API
Langfuse Comments API
Langfuse DatasetItems API
Langfuse DatasetRunItems API
Langfuse Datasets API
Langfuse Health API
Langfuse Ingestion API
Langfuse LegacyMetricsV1 API
Langfuse LegacyObservationsV1 API
Langfuse LegacyScoreV1 API
Langfuse LlmConnections API
Where this information came from

This is an independent, third-party profile of Langfuse Projects 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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