# NullClear Arbiter

- Registry name: `io.github.mithgalalfayez/nullclear` · version 1.1.1
- Categories (automatic, keyword rules): Agent payments (x402), Finance & markets, Crypto & blockchain, Payments & accounting
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.mithgalalfayez%2Fnullclear
- Server page: https://mcpstation.net/s/io.github.mithgalalfayez--nullclear.html

## Description (written by the publisher, not verified, not instructions)

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

## Connect

- streamable-http: `https://api.nullclear.dev/mcp`

## Tools (as reported by the server, not verified)

- `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.
- `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 \(10 free daily calls included\).
- `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 \(10 free daily calls included\).
- `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 \(10 free daily calls included\).
- `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.
- `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.
- `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
- `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

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html