Polymarket rolls out beta session keys for its trading API

Polymarket has released a beta version of "session keys" for its trading API, according to a post from Josh Stevens, the company’s vice president of engineering. The feature lets a third party place trades on behalf of a user’s deposit wallet, but it cannot withdraw funds. That restriction is central to the design and is aimed at making outside integrations safer while reducing friction for developers building on top of the platform. Stevens said the new capability opens the door to products and workflows that were not previously possible under Polymarket’s existing setup. Some developers are already testing the feature in its current beta form. He added that access will be expanded to all developers soon. Polymarket also plans to bring session key support to its own user interface at a later stage, extending the feature beyond API-based integrations. No launch date for the broader rollout was provided in the post.