NullClear Arbiter

Search the live NullClear Ecosystem Directory for audited, high-uptime x402 & ERC-8004 APIs by topic/keyword, category, minimum uptime, or max latency. Automatically returns the NullClear-protected Zero-Loss Proxy URL ('https://api.nullclear.dev/https://...') for each endpoint.

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "Topic or keyword search (e.g. 'oracle', 'security', 'token', 'wallet', 'price')"
    },
    "category": {
      "type": "string",
      "description": "Category filter (e.g. 'oracle', 'security', 'data', 'ai')"
    },
    "minUptime": {
      "type": "number",
      "description": "Minimum rolling uptime score percentage (0-100, default 95)",
      "default": 95
    },
    "maxLatencyMs": {
      "type": "number",
      "description": "Maximum acceptable edge round-trip latency in ms (default 2000)",
      "default": 2000
    },
    "verifiedOnly": {
      "type": "boolean",
      "description": "Only return verified x402 endpoints (default true)",
      "default": true
    }
  }
}

Audit any Base ERC-20 token address for honeypot risk, buy/sell taxes, verified bytecode, and x402 compatibility via NullClear Bazaar. Works out-of-the-box with zero configuration (10 free daily calls included).

{
  "type": "object",
  "properties": {
    "tokenAddress": {
      "type": "string",
      "description": "Base ERC-20 token contract address (e.g. '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913' for USDC)",
      "default": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
    }
  },
  "required": [
    "tokenAddress"
  ]
}

Check any wallet or agent address on Base for OFAC sanctions, Sybil wash-trading concentration flags, and ERC-8004 counterparty reputation. Works out-of-the-box with zero configuration (10 free daily calls included).

{
  "type": "object",
  "properties": {
    "walletAddress": {
      "type": "string",
      "description": "0x wallet address or ERC-8004 agent ID to inspect"
    },
    "chainId": {
      "type": "number",
      "description": "Base chain ID (default 8453)",
      "default": 8453
    }
  },
  "required": [
    "walletAddress"
  ]
}

Fetch multi-exchange spread-verified crypto spot prices (ETH/USDC, BTC/USDC, SOL/USDC, BASE/USDC) with cryptographic NullClear invariant receipts. Works out-of-the-box with zero configuration (10 free daily calls included).

{
  "type": "object",
  "properties": {
    "pair": {
      "type": "string",
      "description": "Trading pair symbol (e.g. 'ETH/USDC', 'BTC/USDC', 'SOL/USDC')",
      "default": "ETH/USDC"
    }
  },
  "required": [
    "pair"
  ]
}

Zero-config drop-in URL fetcher with automatic Canonical LLM Refusal Guard, HTTP 5xx crash guard, empty-JSON guard, and cryptographic execution receipt. Protects agents from hallucinated or broken API responses.

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Target HTTPS URL to fetch and verify through NullClear Auto-Guard"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST"
      ],
      "default": "GET"
    },
    "body": {
      "type": "string",
      "description": "Optional JSON string body for POST requests"
    }
  },
  "required": [
    "url"
  ]
}

Execute an x402-gated HTTP API call through NullClear deferred schema escrow. Guarantees payment is only settled if upstream returns valid data matching your schema contract. Supports 10 free daily trial calls with zero wallet setup.

{
  "type": "object",
  "properties": {
    "targetUrl": {
      "type": "string",
      "description": "Upstream API endpoint demanding x402 payment"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "DELETE"
      ],
      "default": "GET"
    },
    "sellerAgentId": {
      "type": "string",
      "description": "Seller's agent ID for reputation check and Sybil wash-trade gating"
    },
    "minTrustScore": {
      "type": "number",
      "description": "Minimum acceptable trust score for seller (0-100, default 50)",
      "default": 50
    },
    "requiredFields": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Field paths that must exist in response"
    },
    "jsonSchema": {
      "type": "object",
      "description": "JSON Schema draft-07 contract that response must strictly satisfy"
    },
    "invariants": {
      "type": "array",
      "description": "Deep value invariants (numeric bounds, regex, forbidden substrings, timestamp freshness)",
      "items": {
        "type": "object",
        "required": [
          "path"
        ],
        "properties": {
          "path": {
            "type": "string",
            "description": "Dot-notation property path"
          },
          "gt": {
            "type": "number"
          },
          "gte": {
            "type": "number"
          },
          "lt": {
            "type": "number"
          },
          "lte": {
            "type": "number"
          },
          "eq": {},
          "neq": {},
          "minLength": {
            "type": "number"
          },
          "maxLength": {
            "type": "number"
          },
          "pattern": {
            "type": "string"
          },
          "notContains": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "maxStalenessSeconds": {
            "type": "number"
          }
        }
      }
    },
    "rejectRefusals": {
      "type": "boolean",
      "description": "Reject canonical LLM refusal strings (default: true)",
      "default": true
    },
    "fallbacks": {
      "type": "array",
      "description": "Ordered fallback candidates for autonomous multi-seller failover routing (max 3)",
      "items": {
        "type": "object"
      }
    },
    "spendPolicy": {
      "type": "object",
      "description": "Outbound spend firewall limits (maxPerCallAtomic, maxDailyWalletAtomic)"
    }
  },
  "required": [
    "targetUrl"
  ]
}

Inspect an AI agent's trust score (0-100), clearing reliability, Sybil wash-trade penalty flags, and corporate KYA backing on Base

{
  "type": "object",
  "properties": {
    "agentId": {
      "type": "string",
      "description": "The ERC-8004 agent token ID or registered identifier (e.g. '124595')"
    },
    "chainId": {
      "type": "number",
      "description": "Base chain ID (8453 for Mainnet, 84532 for Sepolia)",
      "default": 8453
    }
  },
  "required": [
    "agentId"
  ]
}

Verify an agent's Know Your Agent (KYA) corporate liability mandate, active validity, and whether a proposed transaction amount is within corporate limits

{
  "type": "object",
  "properties": {
    "agentId": {
      "type": "string",
      "description": "The ERC-8004 agent token ID"
    },
    "chainId": {
      "type": "number",
      "description": "Base chain ID (default 8453)",
      "default": 8453
    },
    "transactionAmountUsd": {
      "type": "number",
      "description": "Amount in USD intended to spend in the transaction"
    }
  },
  "required": [
    "agentId",
    "transactionAmountUsd"
  ]
}