Beauty & Personal Care · x402 · early usage

0-100 safety score with components (protocol trust, TVL depth, audits, track record), o…

0-100 safety score with components (protocol trust, TVL depth, audits, track record), observed and risk-adjusted APR, and whether STB's Auto-Defense would exit — for every vetted stablecoin vault, or one by ?venue=<id|pool address>.

by x402.spendthebits.com · discovered, not yet claimed by its owner · updated 2026-10-05

30d calls5

30d payers3

MethodGET

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

Tags: defi · yield · risk · stablecoin · usdc · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-05

Input example from Bazaar metadata

{}

Output example

{
  "as_of": "2026-09-23T00:00:00+00:00",
  "count": 1,
  "methodology": "https://superapp.spendthebits.com/help/yield-safety-score",
  "network": "mainnet",
  "venues": [
    {
      "asset": "USDC",
      "audit_firms": 4,
      "audited": true,
      "auto_defense": {
        "floor": 60,
        "reason": null,
        "would_exit": false
      },
      "chain": "polygon",
      "chain_id": 137,
      "enabled": true,
      "factors": [
        {
          "detail": "Aave v3",
          "max": 30,
          "name": "Protocol trust",
          "points": 30
        }
      ],
      "id": "…",
      "incidents": 0,
      "launched_days_ago": 900,
      "name": "Aave v3 USDC",
      "observed_apr": "0.0412",
      "pool_address": "0x…",
      "protocol": "aave_v3",
      "risk_adjusted_apr": "0.037904",
      "safety_score": 92,
      "tvl_usd": "180000000"
    }
  ]
}

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/26888.json for the price and payment options.
Pay. Call GET https://x402.spendthebits.com/@stbclaudeprod/yield-safety/. 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, eip155:5042, Polygon, Arbitrum One, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.005 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, eip155:5042, Polygon, Arbitrum One, Solana
Demand: 5 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.005	0x44818760C35821d793cf69275DdcFc012B3cDa11	300s
exact	eip155:5042 eip155:5042	0x3600000000000000000000000000000000000000	5000	0xBe5cb96D1Bd2B4d5D5C0A1f16266cc0ba2849D30	300s
exact	Polygon eip155:137	USDC	$0.005	0x44818760C35821d793cf69275DdcFc012B3cDa11	300s
exact	Arbitrum One eip155:42161	USDC	$0.005	0x44818760C35821d793cf69275DdcFc012B3cDa11	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.005	AL9qAUU4KSz4sFvGNbdxXDjjPbqTLvx221TSm2nFVwni	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "payTo": "0xBe5cb96D1Bd2B4d5D5C0A1f16266cc0ba2849D30",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "AL9qAUU4KSz4sFvGNbdxXDjjPbqTLvx221TSm2nFVwni",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "as_of": {
          "description": "When this answer was computed (ISO 8601)",
          "type": "string"
        },
        "count": {
          "type": "integer"
        },
        "methodology": {
          "description": "URL of the scoring method",
          "type": "string"
        },
        "network": {
          "type": "string"
        },
        "venues": {
          "items": {
            "properties": {
              "asset": {
                "type": "string"
              },
              "audit_firms": {
                "type": "integer"
              },
              "audited": {
                "type": "boolean"
              },
              "auto_defense": {
                "properties": {
                  "floor": {
                    "type": "integer"
                  },
                  "reason": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "would_exit": {
                    "type": "boolean"
                  }
                },
                "required": [
                  "floor",
                  "would_exit"
                ],
                "type": "object"
              },
              "chain": {
                "type": "string"
              },
              "chain_id": {
                "type": [
                  "integer",
                  "null"
                ]
              },
              "enabled": {
                "type": "boolean"
              },
              "factors": {
                "description": "The components the score is the sum of",
                "items": {
                  "type": "object"
                },
                "type": "array"
              },
              "id": {
                "type": "string"
              },
              "incidents": {
                "type": "integer"
              },
              "launched_days_ago": {
                "type": "integer"
              },
              "name": {
                "type": "string"
              },
              "observed_apr": {
                "description": "Decimal fraction, e.g. 0.0412 = 4.12%",
                "type": "string"
              },
              "pool_address": {
                "type": "string"
              },
              "protocol": {
                "type": "string"
              },
              "risk_adjusted_apr": {
                "type": "string"
              },
              "safety_score": {
                "maximum": 100,
                "minimum": 0,
                "type": "integer"
              },
              "scored_at": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "tvl_usd": {
                "type": "string"
              }
            },
            "required": [
              "id",
              "name",
              "protocol",
              "asset",
              "pool_address",
              "enabled",
              "safety_score",
              "factors",
              "observed_apr",
              "risk_adjusted_apr",
              "tvl_usd",
              "auto_defense"
            ],
            "type": "object"
          },
          "type": "array"
        }
      },
      "required": [
        "as_of",
        "network",
        "count",
        "venues",
        "methodology"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "as_of": "string",
    "count": 0,
    "methodology": "string",
    "network": "string",
    "venues": [
      {
        "asset": "string",
        "audit_firms": 0,
        "audited": true,
        "auto_defense": {
          "floor": 0,
          "reason": "string",
          "would_exit": true
        },
        "chain": "string",
        "chain_id": 0,
        "enabled": true,
        "factors": [
          {}
        ],
        "id": "string",
        "incidents": 0,
        "launched_days_ago": 0,
        "name": "string",
        "observed_apr": "string",
        "pool_address": "string",
        "protocol": "string",
        "risk_adjusted_apr": "string",
        "safety_score": 0,
        "scored_at": "string",
        "tvl_usd": "string"
      }
    ]
  },
  "type": "string"
}

Examples

curl

curl -X GET 'https://x402.spendthebits.com/@stbclaudeprod/yield-safety/'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://x402.spendthebits.com/@stbclaudeprod/yield-safety/", {
  "method": "GET"
});
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.request("GET", "https://x402.spendthebits.com/@stbclaudeprod/yield-safety/")
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: x402.spendthebits.com
Endpoint: https://x402.spendthebits.com/@stbclaudeprod/yield-safety/
Machine-readable: /resources/26888.json