Uber explains the MCP Gateway that controls its agents' access to tools
Sorted AI6d agoUber's engineering team has described MCP Gateway, a central service between its AI agents and internal systems that Uber says hosts over 800 MCP servers and over 5,000 tools. A crawler turns existing internal APIs into MCP tools automatically, but every server and tool starts disabled until the owning team reviews and enables it, and changes to tool descriptions need the owner's approval. The gateway applies access policies to humans, services and agents, set per server with optional per-tool overrides, and redacts personal or sensitive data from tool responses. To keep agent context small, agents discover servers and tools step by step, and Uber's coding agents by default call tools through its aifx command-line tool and write results to files.
Why it matters: If several teams are connecting agents to internal systems, copy two rules: tools stay off until their owner approves them, and access checks and data redaction live in one gateway rather than in each agent. A single registry of your MCP servers is a sensible first step.
Uber Engineering ↗AI-assisted, reviewed by Sorted AI
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