Enkrypt AI Secure MCP Gateway

title Enkrypt Secure MCP Gateway Flow participant User participant "MCP Client" as Client participant LLM participant "MCP Gateway" as Gateway participant "EAI Guardrails" as Guardrails participant "MCP Server" as Server participant Tools parallel note over Client, LLM: === Client Layer === note over Gateway, Guardrails: === EAI Layer === note over Server, Tools: === Server Layer === parallel off note over LLM: LLM operates in two main phases:\n1. Discovery - Finds available safe servers and tools.\n2. Execution - Executes the chosen tool through Gateway. # Discovery ------------------------- User->Client: Discovery query Client->LLM: Discovery request LLM->Gateway: Discover all servers and tools Gateway->Server: Get server and tools info Server->Gateway: Return info Gateway->Guardrails: Validate servers and tools safety Guardrails->Gateway: Return validation result Gateway->LLM: Return list of safe servers and tools LLM->Client: Process list of servers and tools Client->User: Display list # Tool Query ------------------------- User->Client: Send query Client->LLM: Send request LLM->LLM: Identify tool and server if required alt No tool required or no matching tool found LLM->Client: Generate and return direct response Client->User: Display LLM-only response else Tool required LLM->Gateway: Request to execute tool Gateway->Guardrails: Validate request safety Guardrails->Gateway: Return validation result alt Request blocked Gateway->LLM: Return blocked request else Request safe Gateway->Server: Forward tool call Server->Tools: Execute tool Tools->Server: Return tool output Server->Gateway: Send response Gateway->Guardrails: Validate response safety Guardrails->Gateway: Return validation result alt Response blocked Gateway->LLM: Return blocked response else Response safe Gateway->LLM: Return server response end end LLM->Client: Process and send final output Client->User: Display result end