Best Agent Gateways for Tool Calling at Scale in 2026

AI agent and MCP gateways are presented as production infrastructure for centrally securing, authorizing, monitoring, and managing agent connections to enterprise tools and data, reducing credential sprawl, fragmented policies, and audit gaps. The comparison examines 12 gateway and related platforms—including MintMCP, Bifrost, TrueFoundry, Portkey, LiteLLM, Kong, Solo.io’s agentgateway, Zuplo, Cloudflare, Azure API Management, Gravitee, and IBM ContextForge—based on performance, security, MCP and A2A protocol support, deployment options, compliance, and fit with existing infrastructure. Options range from managed SaaS products with enterprise identity, policy, and observability features to open-source, self-hosted platforms emphasizing throughput, multi-model routing, cloud-native deployment, or MCP-server federation. MintMCP is highlighted for combining MCP governance with agent identities, permissions, monitoring, scoped tool bundles, OAuth brokering, and managed connectors, while other products target use cases such as API-platform extension, Azure integration, edge deployment, air-gapped environments, or vendor-neutral open-source governance. Selection guidance emphasizes matching latency needs, deployment and data-residency requirements, required MCP capabilities, compliance evidence, and existing cloud or API investments, as MCP adoption across major AI tools makes governed agent connectivity increasingly important for enterprise deployments.

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