AI Inference · x402 · early usage

Base token safety check: Claude Haiku 5.5 (Anthropic) writes a rug pull / honeypot verd…

Base token safety check: Claude Haiku 5.5 (Anthropic) writes a rug pull / honeypot verdict (SAFE/CAUTION/RISKY/DANGER) from on-chain data, a tagline, a short explanation. Deterministic fallback if Claude is slow, honestly labeled. GET /token-card/sample.

by x402.agentindex.world · discovered, not yet claimed by its owner · updated 2026-10-12

30d calls4

30d payers2

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: token safety check · rug pull check · honeypot check · is this token safe · claude · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-12

Input example from Bazaar metadata

{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}

Output example

{
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "card": {
    "disclaimer": "Not financial advice.",
    "explanation": "Bytecode analysis flagged no mint, blacklist, pause, or fee-setting functions, and the contract is not an upgradeable proxy. Liquidity was found on Uniswap V2, V3, and Aerodrome, and the JEV risk verdict is caution with 99% probability. Ownership is not renounced, and holder analysis was skipped because this is an established token.",
    "note": "CAUTION",
    "source": "claude",
    "tagline": "Base USDC: no risky functions found, but verdict is CAUTION."
  },
  "network": {
    "caip2": "eip155:8453",
    "key": "base",
    "name": "Base"
  },
  "token_risk_verdict": {
    "confidence": 0.98,
    "probabilities": {
      "acceptable": 0,
      "avoid": 0.01,
      "caution": 0.99
    },
    "probability": 0.99,
    "verdict": "caution",
    "verdict_source": "jev"
  }
}

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/33909.json for the price and payment options.
Pay. Call GET https://x402.agentindex.world/token-card. 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: 4 calls · 2 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	0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "address": {
          "type": "string"
        },
        "card": {
          "description": "note is SAFE/CAUTION/RISKY/DANGER. source is 'claude' (written by Claude from the on-chain facts, <=2s) or 'deterministic_fallback' (same facts, mapped by fixed rules, used whenever Claude is slow, unconfigured, or errors) - either way, every claim is grounded in token_risk_verdict/bytecode_analysis/liquidity_analysis, never invented.",
          "properties": {
            "disclaimer": {
              "type": "string"
            },
            "explanation": {
              "description": "At most 3 sentences.",
              "type": "string"
            },
            "note": {
              "enum": [
                "SAFE",
                "CAUTION",
                "RISKY",
                "DANGER"
              ],
              "type": "string"
            },
            "source": {
              "enum": [
                "claude",
                "deterministic_fallback"
              ],
              "type": "string"
            },
            "tagline": {
              "description": "Shareable one-liner, 60 characters maximum.",
              "type": "string"
            }
          },
          "required": [
            "note",
            "tagline",
            "explanation",
            "disclaimer",
            "source"
          ],
          "type": "object"
        },
        "network": {
          "type": "object"
        },
        "token_risk_verdict": {
          "description": "The same avoid/caution/acceptable verdict POST /token-risk itself returns, for the same address.",
          "type": "object"
        },
        "x402_receipt": {
          "description": "Billing and provenance receipt for this call.",
          "type": "object"
        }
      },
      "required": [
        "address",
        "card",
        "token_risk_verdict"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "address": "string",
    "card": {
      "disclaimer": "string",
      "explanation": "string",
      "note": "SAFE",
      "source": "claude",
      "tagline": "string"
    },
    "network": {},
    "token_risk_verdict": {},
    "x402_receipt": {}
  },
  "type": "string"
}

Examples

curl

curl "https://x402.agentindex.world/token-card"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://x402.agentindex.world/token-card");
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://x402.agentindex.world/token-card")
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.agentindex.world
Endpoint: https://x402.agentindex.world/token-card
Machine-readable: /resources/33909.json