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Open-source tools & agent skills to build the things you’re paying for.

Locust

Project28.2K

Write Python load tests for HTTP and other protocols, then run them through a web UI or headlessly.

Added 2026-10-07
Replaces
GitHub

What you can build

  • Code a converter that reads your team's journey CSV and produces Python Locust tasks, preserving the source file and reporting malformed rows.
  • Build a Python helper that accepts your API's request data, handles its documented response quirks, and gives Locust tasks a consistent result to check.
  • Read time points and user counts from a schedule file, validate the entries, and use them to drive a custom load shape during a test.
  • Write a client for your system's protocol and use it in Locust scenarios to turn defined operations into measurable test traffic.
  • Build a parser that reads exported Locust results and produces a CI-friendly report of selected response-time and error measurements for later analysis.

Try this prompt

Build a small end-to-end converter from a clearly specified journey CSV into a Locust Python test file. Validate headers and malformed rows, generate tasks that preserve the journey order, and include a sample input and generated output. Never modify the input file. Explain how to use the generated test with Locust's documented UI or headless workflow. Keep the converter focused; do not assume hosted infrastructure or add undocumented integrations.

Get started

  1. Prepare Python

    Follow the official installation guide at https://docs.locust.io/en/stable/installation.html for setup requirements and instructions.

  2. Create a test file

    Write Python user classes and tasks to describe request sequences. Locust supports ordinary Python logic and libraries.

  3. Run and inspect a test

    Run with the web UI to view progress and change load during a test, or without the UI for CI/CD. Review throughput, response times, and errors.

License & notes

MITLocust is MIT-licensed, with no license fee; retain the copyright and license notice when distributing copies or substantial portions. You provide compute for load generators and the system under test; distributed runs use multiple machines. Optional hosting or reporting services may cost extra. No prices are quoted here.

  • Load generation uses compute and can affect the system under test; distributed runs require multiple machines.
  • Locust does not provide managed test infrastructure. Optional hosting and reporting services may have separate costs.
  • Testing a non-HTTP system requires an appropriate client; Locust does not supply a universal client for every protocol.

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