# agentgateway [Platforms & harness multiplexers](https://www.agentlist.io/categories/platform)agentgateway[Last checked Nov 12, 2026](https://www.agentlist.io/changelog) agentgateway is an open-source proxy for agent-to-LLM, agent-to-tool and agent-to-agent traffic, built on MCP and A2A with security, observability and governance. [Visit agentgateway](https://agentgateway.dev/) - [agentgateway.dev](https://agentgateway.dev/) - [github.com/agentgateway/agentgateway](https://github.com/agentgateway/agentgateway) - Open source (Apache-2.0) - MCP gateway - A2A - Kubernetes ## At a glance **Who it's for**: Platform teams putting authentication, rate limits and audit in front of MCP servers, LLM providers and agents. **What does it do?**: An agentic proxy with an LLM gateway (one OpenAI-compatible API over OpenAI, Anthropic, Gemini, Bedrock and more), an MCP gateway with tool federation and OAuth, an A2A gateway, inference routing, guardrails, and auth with RBAC. [github.com (source for What does it do?)](https://github.com/agentgateway/agentgateway) [agentgateway.dev (source for What does it do?)](https://agentgateway.dev/) **Where does it run?**: Self-hosted, either standalone or on Kubernetes. [github.com (source for Where does it run?)](https://github.com/agentgateway/agentgateway) [agentgateway.dev (source for Where does it run?)](https://agentgateway.dev/) **What does it cost?**: Free and open source under Apache-2.0. The site also lists an Enterprise option. [github.com (source for What does it cost?)](https://github.com/agentgateway/agentgateway) [agentgateway.dev (source for What does it cost?)](https://agentgateway.dev/) **Which protocols and providers does it support?**: MCP over stdio, HTTP, SSE and Streamable HTTP, A2A, OpenAPI, and major LLM providers. [github.com (source for Which protocols and providers does it support?)](https://github.com/agentgateway/agentgateway) **Who makes it?**: The agentgateway project (GitHub org agentgateway). [github.com (source for Who makes it?)](https://github.com/agentgateway/agentgateway) ## Common questions What is agentgateway? agentgateway is an open-source proxy for agent-to-LLM, agent-to-tool and agent-to-agent traffic, built on MCP and A2A with security, observability and governance. Who is agentgateway for? Platform teams putting authentication, rate limits and audit in front of MCP servers, LLM providers and agents. How much does agentgateway cost? Free and open source under Apache-2.0. The site also lists an Enterprise option. Checked against the vendor's pages on Nov 12, 2026. Plans change often, so confirm before you decide. Does agentgateway run locally or in the cloud? agentgateway runs in the vendor's cloud. You use it through chat apps and an API. What are alternatives to agentgateway? See the Platforms & harness multiplexers shortlist for the other options. [See all agent platforms](https://www.agentlist.io/categories/platform) --- Source: [agentgateway: pricing & alternatives | agentlist.io](https://www.agentlist.io/systems/agentgateway). This is the public page rendered as Markdown; interactive controls require the website.