NullClear Arbiter

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io.github.mithgalalfayez/nullclearv1.1.1

Autonomous x402 payment schema-escrow arbiter, spend firewall, failover & ERC-8004 Sybil oracle

Crypto & Web3 Security

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https://api.nullclear.dev/mcp

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Tool list from our last check. Connect live to refresh it.

nullclear_check_reputation Read-only

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

agentIdstring, required

The ERC-8004 agent token ID or registered identifier (e.g. '124595')

chainIdnumber

Base chain ID (8453 for Mainnet, 84532 for Sepolia)

Tools (8)

nullclear_check_reputation

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

read-only

Argument	Type	Description
agentId*	string	The ERC-8004 agent token ID or registered identifier (e.g. '124595')
chainId	number	Base chain ID (8453 for Mainnet, 84532 for Sepolia)

Input schema (JSON)

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

nullclear_crypto_market_oracle

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).

read-only

Argument	Type	Description
pair*	string	Trading pair symbol (e.g. 'ETH/USDC', 'BTC/USDC', 'SOL/USDC')

Input schema (JSON)

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

nullclear_discover_verified_x402_apis

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.

read-only

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

Input schema (JSON)

{
  "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",
      "default": 95,
      "description": "Minimum rolling uptime score percentage (0-100, default 95)"
    },
    "maxLatencyMs": {
      "type": "number",
      "default": 2000,
      "description": "Maximum acceptable edge round-trip latency in ms (default 2000)"
    },
    "verifiedOnly": {
      "type": "boolean",
      "default": true,
      "description": "Only return verified x402 endpoints (default true)"
    }
  }
}

nullclear_escrow_x402_call

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.

Argument	Type	Description
method	string
fallbacks	array	Ordered fallback candidates for autonomous multi-seller failover routing (max 3)
targetUrl*	string	Upstream API endpoint demanding x402 payment
invariants	array	Deep value invariants (numeric bounds, regex, forbidden substrings, timestamp freshness)
jsonSchema	object	JSON Schema draft-07 contract that response must strictly satisfy
spendPolicy	object	Outbound spend firewall limits (maxPerCallAtomic, maxDailyWalletAtomic)
minTrustScore	number	Minimum acceptable trust score for seller (0-100, default 50)
sellerAgentId	string	Seller's agent ID for reputation check and Sybil wash-trade gating
rejectRefusals

nullclear_safe_fetch

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.

read-only

Argument	Type	Description
url*	string	Target HTTPS URL to fetch and verify through NullClear Auto-Guard
body	string	Optional JSON string body for POST requests
method	string

Input schema (JSON)

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

nullclear_token_security_audit

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).

read-only

Argument	Type	Description
tokenAddress*	string	Base ERC-20 token contract address (e.g. '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913' for USDC)

Input schema (JSON)

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

nullclear_verify_kya_mandate

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

read-only

Argument	Type	Description
agentId*	string	The ERC-8004 agent token ID
chainId	number	Base chain ID (default 8453)
transactionAmountUsd*	number	Amount in USD intended to spend in the transaction

Input schema (JSON)

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

nullclear_wallet_risk_score

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).

read-only

Argument	Type	Description
chainId	number	Base chain ID (default 8453)
walletAddress*	string	0x wallet address or ERC-8004 agent ID to inspect

Input schema (JSON)

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

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