{
  "id": "model-transport:bedrock-bidirectional-stream",
  "_kind": "ModelTransportProtocol",
  "_file": "compute/model-transport-protocols/bedrock-bidirectional-stream.yaml",
  "_cluster": "compute",
  "attributes": {
    "displayName": "AWS Bedrock InvokeModelWithBidirectionalStream",
    "vendor": "Amazon Web Services",
    "specUrl": "https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_InvokeModelWithBidirectionalStream.html",
    "streamingFraming": "aws-event-stream",
    "usageEnvelope": "bedrock-usage",
    "thinkingChannel": "none",
    "firstSpecVersion": "2025-12-02",
    "currentSpecVersion": "2025-12-02",
    "status": "standard",
    "requestBodyShape": "POST /model/{modelId}/invoke-with-bidirectional-stream\nA Bedrock Runtime bidirectional event stream where the client sends\nprovider-native input events and receives model output events over the\nsame invocation. Nova 2 Sonic uses this surface for low-latency\nspeech-to-speech conversation flows.\n",
    "responseBodyShape": "HTTP 200 application/vnd.amazon.eventstream with interleaved model output\nand metadata/error events. Payload details are provider/model native for\nspeech-to-speech streaming models such as Amazon Nova 2 Sonic.\n",
    "streamingEventTypes": [
      "input",
      "output",
      "metadata",
      "validationException",
      "throttlingException",
      "modelStreamErrorException",
      "internalServerException"
    ],
    "errorEnvelope": "Errors follow Bedrock Runtime event-stream exception events or the standard\nBedrock JSON error envelope with `message` and `__type` fields.\n",
    "rateLimitSignaling": "On throttling or service quota failures, clients should use standard AWS\nretry semantics with exponential backoff and jitter. Per-model quota state\nis managed through AWS Service Quotas and CloudWatch rather than a\ncross-provider remaining-budget response header.\n",
    "authHeaderFormat": "AWS Signature Version 4 over the request:\n  `Authorization: AWS4-HMAC-SHA256 ...`\n  `x-amz-date: <ISO8601>`\n  `x-amz-security-token: <session-token>` for STS / role credentials.\nEndpoint: `https://bedrock-runtime.<region>.amazonaws.com`.\n",
    "versioningHeader": "No protocol-version header on the request. The API surface is versioned\nthrough the Bedrock Runtime endpoint and model id.\n",
    "notes": "This protocol node is separate from Bedrock Converse because Nova 2 Sonic\nis tracked as bidirectional speech-to-speech streaming, not a standard\nrequest/response text chat model.\n"
  },
  "outgoingEdges": [
    {
      "from": "model-transport:bedrock-bidirectional-stream",
      "to": "layer:3-transport",
      "kind": "realizes",
      "attributes": {}
    },
    {
      "from": "model-transport:bedrock-bidirectional-stream",
      "to": "provider:aws-bedrock",
      "kind": "served_by"
    },
    {
      "from": "model-transport:bedrock-bidirectional-stream",
      "to": "model:amazon-nova-2-sonic@current",
      "kind": "spoken_by"
    }
  ],
  "incomingEdges": [
    {
      "from": "model:amazon-nova-2-sonic@current",
      "to": "model-transport:bedrock-bidirectional-stream",
      "kind": "speaks"
    }
  ]
}