Browser CDP Supervisor
The CDP supervisor closes two long standing gaps in Hermes' browser tooling: 1. Native JS dialogs ( / / / ) block the page's JS thread. Without supervision, the
The CDP supervisor closes two long-standing gaps in Hermes' browser tooling: 1. Native JS dialogs (///) block the page's JS thread. Without supervision, the agent has no way to know a dialog is open — subsequent tool calls hang or throw opaque errors. 2. Cross-origin iframes (OOPIFs) are invisible to top-level . …
What this page covers
- Backend support
- Architecture
- CDPSupervisor
- Lifecycle
- Dialog policy
- Agent surface
- browserdialog tool
- browsersnapshot extension
- Availability gating
- Cross-origin iframe interaction
- File layout
- Non-goals
- Testing
Section outline mirrored from the official Hermes Agent documentation. Follow any heading to read the complete text on the source site.
More in Developer Guide
Contributing
Thank you for contributing to Hermes Agent! This guide covers setting up your dev environment, understanding the codebase, and getting your PR merged. Contribut
Architecture
This page is the top level map of Hermes Agent internals. Use it to orient yourself in the codebase, then dive into subsystem specific docs for implementation d
Agent Loop Internals
The core orchestration engine is 's class — a large file that handles everything from prompt assembly to tool dispatch to provider failover. Core Responsibiliti
Prompt Assembly
Hermes deliberately separates: cached system prompt state ephemeral API call time additions This is one of the most important design choices in the project beca
Context Compression and Caching
Context Compression and Caching Hermes Agent uses a dual compression system and Anthropic prompt caching to manage context window usage efficiently across long
Gateway Internals
The messaging gateway is the long running process that connects Hermes to 20+ external messaging platforms through a unified architecture. Key Files File Purpos