pool.linkrra.com

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "PAYMENT-SIGNATURE header is required — POST an OpenAI chat-completion body with it to pay",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://pool.linkrra.com/api/billing/x402/chat/completions",
    "tags": [
      "inference",
      "llm",
      "chat-completion",
      "ai-compute"
    ],
    "mimeType": "application/json",
    "description": "Linkrra Synap inference — pay-per-call chat completion for model \"any catalogue model (see GET /v1/models) — this quote is generic; POST model + messages for an exact price\". Price covers up to 4096 output tokens, billed at this model's own per-token price (see GET /v1/models) converted at $0.2273 per million credits. Minimum charge $0.01 per paid call — a request whose usage-based price is below the minimum is quoted and settled at exactly the minimum, so a small call costs the minimum and not less. If the completion uses fewer tokens the difference is not refunded in v1 — it is credited to your paying wallet address on the same ledger the topup endpoint uses, so nothing is lost: spend it with another paid request, or register it as a free-standing account.",
    "serviceName": "Linkrra Synap Inference"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "model": "string, required — see GET /v1/models for the catalogue",
            "stream": "boolean, optional",
            "messages": "array, OpenAI chat-completion message objects",
            "max_tokens": "number, optional, capped at 4096"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "id": "chatcmpl-...",
            "usage": {
              "total_tokens": 0,
              "prompt_tokens": 0,
              "completion_tokens": 0
            },
            "object": "chat.completion",
            "choices": [
              {
                "message": {
                  "role": "assistant",
                  "content": "..."
                }
              }
            ],
            "payment": {
              "network": "eip155:8453",
              "paidUsd": 0,
              "transaction": "0x..."
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "required": [
          "input",
          "output"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object"
              },
              "type": {
                "type": "string"
              },
              "method": {
                "type": "string"
              },
              "bodyType": {
                "type": "string"
              }
            }
          },
          "output": {
            "type": "object",
            "required": [
              "type",
              "example"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://pool.linkrra.com/api/billing/x402/chat/completions",
    "description": "",
    "maxAmountRequired": "1000",
    "maxTimeoutSeconds": 120
  }
]

Provenance

Seen in the source catalog

2026-10-22 16:33Z

Last indexed by Roundhouse

2026-10-22 16:46Z

Last enriched (probe, favicon, geo)

2026-10-09 20:16Z

x402 version

1

Max timeout

120s

Liveness probe

HTTP 402