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    For the complete documentation index, see llms.txt. Markdown versions of all docs pages are available by appending .md to any docs URL.

    MCP guardrails

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    Control what MCP clients can reach through agentgateway. Filter entire requests and responses with guardrail processors, entire MCP servers with target conditions, and individual tools, prompts, and resources with MCP authorization.
    About MCP guardrails
    Control MCP server access, authorize individual tools, and inspect request and response content.
    Guardrail processors
    Inspect, mutate, or reject MCP requests and responses with in-process CEL expressions or a remote …
    Set up CEL guardrails
    Reject and mask MCP tool calls in-process with CEL expression guardrails.
    Set up remote guardrails
    Gate and mutate MCP method calls with an external ExtMCP policy server.
    MCP AppsMCP auth
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