From https://manifold.markets/terms.html

As a user of the Site, you agree not to:

• (...)

• Engage in any automated use of the system, such as using scripts to send comments or messages, or using any data mining, robots, or similar data gathering and extraction tools.

This is seemingly at odds with their having a public API https://docs.manifold.markets/api

The market resolves "yes" if, before the end of 2023, the terms of service no longer ban "engaging in any automated use of the system", or anything similarly broad about API usage.

The market resolves "no" if that wording, or a similar one, remains in the terms of service by 2024.

Manifold API | Manifold Docs

Programatic access to Manifold.