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Pass Holo a screenshot (URL or base64 data URI) and a text description of an element, and get click coordinates back. It is single-turn, with no history and no thinking, so set temperature=0.0 and enable_thinking=False. Use it as a grounding primitive inside any agent. Both Holo3 and Holo3.1 support it. Set up the OpenAI client first by following the Quickstart.

Localize an element

Coordinates come back as integers in [0, 1000], normalized to the image you sent. Scale against the same image bytes you sent. See Coordinates.

Common pitfalls

Next steps

Agent loop

How to use Holo in your computer-use harness.

API reference

Endpoint, models, parameters, and limits.

Quickstart

Back to setup and your first call.
Last modified on September 11, 2026