OpenAI Introduces WebMCP Annotations Extension for Browser Agents

OpenAI has introduced an Annotations extension for WebMCP, letting developers add custom annotation controls and suggested prompts to give browser agents richer page context. It also published full documentation and demoed use cases like scene editing and bookkeeping.

2026-10-13 ~ 2026-10-13 · 3 related posts

• OpenAI ships WebMCP annotations to give browser agents richer page context — OpenAIDevs · 2026-10-13
• OpenAI publishes full Annotations extensibility docs for WebMCP agents — OpenAIDevs · 2026-10-13
• OpenAI Demos WebMCP Annotations: Guiding Agents in ChatGPT's Browser — reach_vb · 2026-10-13