Locust

aid: locust
name: Locust
description: Locust is an open source load testing tool written in Python that lets you define user behavior with code and
  swarm your system with millions of simultaneous users. Supports HTTP, WebSocket, MQTT, SocketIO, PostgreSQL, MongoDB, and
  other protocols via pluggable user classes, with a real-time web UI for orchestrating tests.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/locust/refs/heads/main/apis.yml
tags:
- Load Testing
- Performance Testing
- Open Source
- Python
- Testing
created: '2026-03-25'
modified: '2026-04-28'
specificationVersion: '0.19'
apis:
- aid: locust:locust
  name: Locust
  description: Open source distributed load testing tool. Tests are written in Python by defining User classes and tasks;
    tests can be run from a web UI, the command line, or embedded as a library.
  humanURL: https://locust.io
  tags:
  - Load Testing
  - Python
  - Performance
  properties:
  - type: Documentation
    url: https://docs.locust.io
  - type: APIReference
    url: https://docs.locust.io/en/stable/api.html
  - type: GettingStarted
    url: https://docs.locust.io/en/stable/quickstart.html
  - type: Configuration
    url: https://docs.locust.io/en/stable/configuration.html
  - type: SourceCode
    url: https://github.com/locustio/locust
common:
- type: Website
  url: https://locust.io
- type: Documentation
  url: https://docs.locust.io
- type: GitHubOrganization
  url: https://github.com/locustio
- type: SourceCode
  url: https://github.com/locustio/locust
- type: License
  url: https://github.com/locustio/locust/blob/master/LICENSE
- type: LlmsText
  url: https://docs.locust.io/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com