Payments · x402 · early usage

Composite 0-100 reputation score for any Base wallet

by graphadvocate.com · discovered, not yet claimed by its owner · updated 2026-09-21

30d calls1

30d payers1

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Composite 0-100 reputation score for any Base wallet. POST {wallet, days?=90}. Combines ERC-8004 registration (Agent0 subgraph), USDC settlement velocity (Base RPC scan), and ERC-8004 feedback+validation registry events aggregated across all of the owner's agents. Hard-gates on 8004 registration to filter burn addresses + CEX wallets. Cached 24h. Use for: should I integrate/pay/trust this peer agent.

Tags: bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-09-21

Input example from Bazaar metadata

{
  "days": 90,
  "wallet": "0x575267eED09c338FAE5716A486A7B58A5749A292"
}

Output example

{
  "awarded_points": {
    "active_last_7d": 10,
    "any_feedback": 10,
    "erc8004_age_gt_7d": 5,
    "erc8004_registered": 15,
    "ipfs_declares_x402": 5,
    "ipfs_metadata_valid": 5,
    "positive_avg_feedback": 5,
    "received_any_30d": 10
  },
  "cache_hit": false,
  "max_score": 100,
  "score": 65,
  "signals": {
    "avg_feedback_value": 85,
    "distinct_feedback_clients": 1,
    "distinct_senders_30d": 2,
    "erc8004_age_days": 75.2,
    "erc8004_agent_count_for_owner": 1,
    "erc8004_agent_id": "41034",
    "erc8004_registered": true,
    "feedback_count": 1,
    "usdc_received_30d_usdc": 4.66
  },
  "tier": "active",
  "verdict": "[active] ERC-8004 registered (75d old, agent #41034) — metadata valid — received $4.6620 USDC from 2 distinct sender(s) in 30d (9 tx) — last paid call 2.6d ago — 1 feedback event(s) from 1 distinct client(s), avg value 85.0.",
  "wallet": "0x575267eED09c338FAE5716A486A7B58A5749A292",
  "window_days": 90
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/40881.json for the price and payment options.
Pay. Call GET https://graphadvocate.com/agent/score. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.02 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 1 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.02	0x0FF5A6ecef783BBA35463ec2F8403B9B5e9e7C86	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x0FF5A6ecef783BBA35463ec2F8403B9B5e9e7C86",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "cache_hit": {
          "type": "boolean"
        },
        "score": {
          "maximum": 100,
          "minimum": 0,
          "type": "integer"
        },
        "tier": {
          "enum": [
            "active_verified",
            "active",
            "registered_or_settling",
            "dormant_low_signal",
            "no_evidence"
          ],
          "type": "string"
        },
        "verdict": {
          "type": "string"
        },
        "wallet": {
          "type": "string"
        }
      },
      "required": [
        "wallet",
        "score",
        "tier",
        "verdict"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "cache_hit": true,
    "score": 0,
    "tier": "active_verified",
    "verdict": "string",
    "wallet": "string"
  },
  "type": "string"
}

Examples

curl

curl -X POST 'https://graphadvocate.com/agent/score' -H 'Content-Type: application/json' --data '{"days":90,"wallet":"0x575267eED09c338FAE5716A486A7B58A5749A292"}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://graphadvocate.com/agent/score", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"days\":90,\"wallet\":\"0x575267eED09c338FAE5716A486A7B58A5749A292\"}"
});
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
import json
res = httpx.request("POST", "https://graphadvocate.com/agent/score", json=json.loads("{\"days\":90,\"wallet\":\"0x575267eED09c338FAE5716A486A7B58A5749A292\"}"))
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: graphadvocate.com
Endpoint: https://graphadvocate.com/agent/score
Machine-readable: /resources/40881.json