Bifrost's Model Context Protocol (MCP) Gateway provides a secure middleware layer for orchestrating tools in production AI agents. As autonomous systems grow, uncontrolled tool execution poses security and cost risks. Bifrost extends the open MCP standard, acting as both client and server to aggregate tools across your stack.

The system enforces a strict 'suggest, don't execute' model. LLM tool proposals are just suggestions; your application must explicitly approve and trigger execution via a dedicated API call. This prevents accidental actions and creates an auditable workflow, keeping developers in full control of every external interaction.

Code Mode cuts token costs by around 50% by having the model write a TypeScript program instead of reasoning over large tool catalogs. Agent Mode enables autonomous execution for read-heavy workflows, but requires explicit whitelisting and human approval for destructive actions. The open source core includes all these features.