What Is an Agent Gateway? The Definitive Guide (2026)

Agent gateways are presented as a centralized control layer for governing AI agents that access tools, databases, APIs, and other agents, replacing complex point-to-point integrations with authenticated, policy-controlled, and observable workflows. Unlike conventional API and LLM gateways, they are designed for stateful, multi-step agent activity and support protocols such as the Model Context Protocol for tool discovery and access and Agent-to-Agent coordination protocols. Core functions include tool registries, per-agent identities and rotating credentials, authorization, protocol translation, session management, rate and budget limits, data-loss prevention integrations, and detailed audit logging of prompts, tool calls, responses, and policy decisions. The discussion emphasizes zero-trust controls, protection against prompt injection, credential leaks, destructive commands, and unmonitored “shadow AI” usage, while describing MintMCP’s bundle-based access model, managed connector catalog, custom policy middleware, and compliance-oriented features. It also states that basic deployments can be completed quickly, whereas enterprise implementation involving SSO, policies, connectors, pilots, and approvals commonly takes several weeks.

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