Kilawatt Cloud

Endpoints and prices

Payment evidence

402 payload captured at 2026-10-10 16:28:11 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "PAYMENT-SIGNATURE header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xf441ad71d29502c33ef911de45aaec0060b34c66",
      "amount": "540000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 600
    }
  ],
  "resource": {
    "url": "https://www.kilawattcloud.dev/api/public/x402/exec",
    "mimeType": "application/json",
    "description": "Kilawatt GPU compute: 1x nvidia-h100 for 600s"
  },
  "extensions": {
    "x402.discovery": {
      "name": "Kilawatt Cloud GPU compute",
      "method": "POST",
      "openapi": "https://www.kilawattcloud.dev/api/public/x402/openapi.json",
      "resource": "https://www.kilawattcloud.dev/api/public/x402/exec",
      "description": "Pay-per-job GPU capacity with multi-provider failover, settled in USDC on Base. The request provisions capacity and does not accept code or commands.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "gpu_type": {
            "enum": [
              "nvidia-b300",
              "nvidia-b200",
              "nvidia-h200",
              "nvidia-h100",
              "nvidia-a100",
              "nvidia-l40s",
              "nvidia-l40",
              "nvidia-a40",
              "nvidia-a10",
              "nvidia-rtx-a6000",
              "nvidia-rtx-a5000",
              "nvidia-rtx-a4500",
              "nvidia-rtx-a4000",
              "nvidia-rtx-5090",
              "nvidia-rtx-4090",
              "nvidia-rtx-3090"
            ],
            "type": "string",
            "default": "nvidia-h100",
            "maxLength": 64,
            "minLength": 1,
            "description": "GPU model to provision. Any other value returns HTTP 400 unknown_gpu_type with the list of valid values."
          },
          "card_count": {
            "type": "integer",
            "default": 1,
            "maximum": 16,
            "minimum": 1,
            "description": "Number of GPUs in the job. Minimum 1. Maximum: 8 for H100, H200, A100, and L40S; 4 for B200; 16 for workstation-class cards. Other GPU classes use the server-enforced class limit."
          },
          "workload_type": {
            "enum": [
              "agent_exec",
              "fine_tune",
              "batch_inference"
            ],
            "type": "string",
            "default": "agent_exec",
            "description": "Workload class dispatched through the Kilawatt gateway."
          },
          "routing_policy": {
            "enum": [
              "lowest_cost",
              "lowest_latency",
              "zero_quota"
            ],
            "type": "string",
            "default": "lowest_cost",
            "description": "Provider selection policy across the failover chain."
          },
          "duration_seconds": {
            "type": "number",
            "default": 600,
            "maximum": 86400,
            "minimum": 60,
            "description": "Requested runtime in seconds. Billing and pre-authorization use this value."
          }
        },
        "description": "Only the listed fields affect the request. Other fields are ignored. There is no field for source code, commands, container images, or workload payloads.",
        "additionalProperties": true
      },
      "outputSchema": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "Kilawatt job identifier, normally the same value as job_id."
          },
          "ready": {
            "type": "boolean"
          },
          "job_id": {
            "type": [
              "string",
              "null"
            ],
            "description": "Execution record identifier used by GET /api/public/v1/jobs/{job_id}."
          },
          "status": {
            "type": "string",
            "description": "provisioning when the node accepts the job."
          },
          "api_key": {
            "type": "string",
            "description": "The machine account's long-lived API key. Returned only in the wallet's first successful paid response because only its hash is stored; it cannot be recovered later."
          },
          "payment": {
            "type": "object",
            "properties": {
              "payer": {
                "type": "string"
              },
              "network": {
                "type": "string"
              },
              "amount_usd": {
                "type": "number",
                "description": "Full signed amount settled on-chain and credited, expressed in whole cents."
              },
              "transaction_hash": {
                "type": "string"
              }
            }
          },
          "gpu_type": {
            "type": "string"
          },
          "provider": {
            "type": "string"
          },
          "billed_usd": {
            "type": "number",
            "description": "Exact job charge from the credited balance. The current x402 pricing path rounds this charge up to whole cents."
          },
          "card_count": {
            "type": "integer"
          },
          "instance_id": {
            "type": "string"
          },
          "failover_hops": {
            "type": "integer"
          },
          "health_status": {
            "type": "string"
          },
          "pricing_basis": {
            "type": "string"
          },
          "real_cost_usd": {
            "type": "number"
          },
          "workload_type": {
            "type": "string"
          },
          "routing_policy": {
            "type": "string"
          },
          "sla_credit_usd": {
            "type": "number"
          },
          "provisioned_gpu": {
            "type": [
              "string",
              "null"
            ]
          },
          "health_monitoring": {
            "type": "object"
          },
          "real_cost_precision": {
            "type": "string"
          }
        }
      }
    }
  },
  "x402Version": 2
}