{
  "id": "mcp-transport:stdio",
  "_kind": "MCPTransport",
  "_file": "compute/mcp-transports/stdio.yaml",
  "_cluster": "compute",
  "attributes": {
    "displayName": "stdio",
    "kind": "stdio",
    "specVersion": "2024-11-05",
    "currentSpecRevision": "2025-11-25",
    "specRevisions": [
      "2024-11-05",
      "2025-03-26",
      "2025-06-18",
      "2025-11-25"
    ],
    "status": "live",
    "streaming": "partial",
    "specUrl": "https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#stdio",
    "connectionLifecycle": "Lifecycle is bound to the child-process lifetime:\n  1. Host spawns the server as a subprocess; stdin/stdout become the\n     JSON-RPC channel (stderr is reserved for human-readable logs).\n  2. Client sends `initialize` (request) with `protocolVersion`,\n     `clientInfo`, and `capabilities`.\n  3. Server responds with its own `protocolVersion`, `serverInfo`,\n     and `capabilities`.\n  4. Client sends `notifications/initialized`. Session is now ready.\n  5. Shutdown is signalled by closing stdin (EOF). Server is expected\n     to exit cleanly; host may follow up with SIGTERM / SIGKILL.\n",
    "capabilityNegotiation": "`initialize` request:\n  { \"jsonrpc\": \"2.0\", \"id\": 1, \"method\": \"initialize\",\n    \"params\": { \"protocolVersion\": \"<spec-rev>\",\n                \"clientInfo\": { \"name\": \"...\", \"version\": \"...\" },\n                \"capabilities\": { \"roots\"?: {...}, \"sampling\"?: {...},\n                                  \"elicitation\"?: {...} } } }\n`initialize` response:\n  { \"jsonrpc\": \"2.0\", \"id\": 1,\n    \"result\": { \"protocolVersion\": \"<spec-rev>\",\n                \"serverInfo\": { \"name\": \"...\", \"version\": \"...\" },\n                \"capabilities\": { \"tools\"?: {...}, \"resources\"?: {...},\n                                  \"prompts\"?: {...}, \"logging\"?: {...} },\n                \"instructions\"?: \"...\" } }\n",
    "notificationModel": "Standard JSON-RPC 2.0 notifications (no `id` field). Server pushes\nnotifications inline on stdout interleaved with responses; client\ndemultiplexes by presence-or-absence of `id`. Examples:\n`notifications/tools/list_changed`, `notifications/resources/updated`,\n`notifications/progress`, `notifications/message` (logging).\n",
    "reconnectPolicy": "No reconnect — stdio sessions are tied 1:1 to the subprocess. Loss\nof the child process is terminal; the host must respawn and run a\nfresh `initialize` handshake. No session-resumption identifier.\n",
    "authentication": "None at the transport layer. The host process inherits the security\nboundary of the spawning user; any per-server credentials are passed\nvia environment variables / argv / config files outside the JSON-RPC\nchannel itself.\n",
    "streamingFraming": "Newline-delimited JSON (NDJSON): each JSON-RPC message is exactly one\nline on stdout/stdin terminated by `\\n`; no embedded newlines in the\npayload. Logs and free-form output go on stderr to keep the JSON-RPC\nchannel clean. Message-id discipline is standard JSON-RPC: requests\ncarry a unique `id` (string or integer); responses echo it; notifications\nomit it. The 2025-06-18 spec revision removed JSON-RPC batch arrays.\n"
  },
  "outgoingEdges": [
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      "kind": "spoken_by",
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    },
    {
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      "kind": "spoken_by",
      "attributes": {}
    },
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      "kind": "spoken_by",
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    },
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    },
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    },
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      "kind": "spoken_by",
      "attributes": {}
    },
    {
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      "to": "agent-runtime-impl:openclaw.runtime@current",
      "kind": "spoken_by",
      "attributes": {}
    },
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      "to": "agent-runtime-impl:opencode.runtime@1.x",
      "kind": "spoken_by",
      "attributes": {}
    },
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      "to": "agent-runtime-impl:pi.runtime@current",
      "kind": "spoken_by",
      "attributes": {}
    },
    {
      "from": "mcp-transport:stdio",
      "to": "agent-runtime-impl:qwen.runtime@current",
      "kind": "spoken_by",
      "attributes": {}
    }
  ],
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    },
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      "kind": "speaks",
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    }
  ]
}