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Pass Holo a screenshot (URL or base64 data URI) and a text description of an element; get click coordinates back. Single-turn, no history, no thinking: set temperature=0.0 and enable_thinking=False. It is a grounding primitive you can use as a vision tool inside any agent, and both Holo3 and Holo3.1 support it. Set up the OpenAI client first by following the Quickstart.
Coordinates come back as integers in [0, 1000], normalized to the image you sent. Scale them to pixels with the image’s own dimensions, and send and scale against the same image bytes: any resize, crop, or DPI mismatch will misplace the point.

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.