mirrored listing x402 eip155:8453

Natural-language Q&A over the x402 Base settlements warehouse

Natural-language Q&A over the x402 Base settlements warehouse. POST {question}. Backed by 132M settlement rows on Cloudflare R2 + pre-aggregated daily_stats (388 days, May 2025 - Jun 2026), queried via Anthropic Sonnet + DuckDB. Returns {answer, sql_trace, model, upstream_ms}; sql_trace lets the caller verify the data path is real, not hallucinated. $0.05 USDC on Base.

50000 (raw units)

price

calls / 30d

unique payers

2026-09-12

updated

Provider

graphadvocate.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x0FF5A6ecef783BBA35463ec2F8403B9B5e9e7C86",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "question": "Top 10 recipient addresses by payment count in the last 30 days"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "answer": "# Top 10 recipients\n| Rank | Address | Count | USDC |\n...",
          "dataset": "base-x402-settlements via x402-watch.vercel.app",
          "model": "claude-sonnet-4-6",
          "question": "Top 10 recipient addresses last 30 days",
          "sql_trace": [
            {
              "ms": 1350,
              "rows": 10,
              "sql": "SELECT recipient, COUNT(*) AS payment_count, SUM(amount::DECIMAL(38,0))/1e6 AS usdc_total FROM settlements WHERE block_number >= 45553999 GROUP BY recipient ORDER BY payment_count DESC LIMIT 10"
            }
          ],
          "upstream_ms": 3500
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "question": {
                  "description": "Plain-English question about x402 Base settlements",
                  "maxLength": 1000,
                  "type": "string"
                }
              },
              "required": [
                "question"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "answer": {
                  "type": "string"
                },
                "dataset": {
                  "type": "string"
                },
                "model": {
                  "type": "string"
                },
                "question": {
                  "type": "string"
                },
                "sql_trace": {
                  "type": "array"
                },
                "upstream_ms": {
                  "type": "number"
                }
              },
              "required": [
                "answer",
                "sql_trace",
                "model"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://graphadvocate.com/ask"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://graphadvocate.com/ask");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://graphadvocate.com/ask")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/5017.json, and this resource appears in /discovery/resources and /discovery/search.