NullClear Arbiter
Autonomous x402 payment schema-escrow arbiter, spend firewall, failover & ERC-8004 Sybil oracle
| Endpoint | https://api.nullclear.dev/mcp (streamable-http) |
|---|---|
| Registry version | 1.1.1 |
| Now | 13 tools · grade A (90) · pin ts_583d608d113e7854415e2d41487d7a17 · protocol 2024-11-05 |
| First / last listed | 2026-10-30 03:15 UTC / 2026-10-30 03:15 UTC |
| Grade over time | 2026-10-30: A (90), 13 tools |
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Tools: scan_token_forensics inspect_contract_abi_and_proxy decode_calldata_or_failed_tx simulate_transaction_preflight read_url_clean_markdown nullclear_discover_verified_x402_apis nullclear_token_security_audit nullclear_wallet_risk_score nullclear_crypto_market_oracle nullclear_safe_fetch nullclear_escrow_x402_call nullclear_check_reputation nullclear_verify_kya_mandate
scan_token_forensics | [ZERO API KEY REQUIRED] Block-pinned on-chain security, EIP-1967/1822 proxy resolution, instruction-boundary opcode disassembly, honeypot, and buy/sell tax audit for Base, Ethereum (ETH), or Solana tokens. Includes cross-chain self-healing auto-detection and <400-token deterministic provenance receipt (100 free calls/day/IP). params: address*, chain |
inspect_contract_abi_and_proxy | [ZERO API KEY REQUIRED] Resolves EIP-1967, EIP-1822, and EIP-1167 proxy implementation addresses via eth_getStorageAt and extracts decoded 4-byte PUSH4 function selectors and dangerous opcodes (SELFDESTRUCT / DELEGATECALL) directly from on-chain bytecode without an Etherscan or Basescan API key. params: address*, chain |
decode_calldata_or_failed_tx | [ZERO API KEY REQUIRED] Universal Calldata, Custom Revert Error & Failed Transaction Post-Mortem Decoder. Accepts raw hex calldata/revert bytes (0x...) OR a 66-char transaction hash (0x...), replays reverted transactions at their exact block, decodes 4-byte signatures & parameters, and flags malicious approvals (approve / permit / setApprovalForAll). params: input*, chain |
simulate_transaction_preflight | [ZERO API KEY REQUIRED] Pre-flight EVM transaction simulator. Dry-runs eth_call + eth_estimateGas on Base or Ethereum before signing/broadcasting, decodes any custom revert reason, detects unlimited drainer approvals, and outputs recommendedAgentAction ('EXECUTE_SAFE', 'ABORT_WILL_REVERT', or 'ABORT_DRAINER_APPROVAL'). params: chain, from, to*, data, value |
read_url_clean_markdown | [ZERO API KEY REQUIRED] Converts any public web URL or documentation page into clean, token-efficient Markdown (<400 tokens) with cryptographic SHA-256 provenance and zero HTML clutter. params: url* |
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. params: query, category, minUptime, maxLatencyMs, verifiedOnly |
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). params: tokenAddress* |
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). params: walletAddress*, chainId |
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). params: pair* |
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. params: url*, method, body |
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. params: targetUrl*, method, sellerAgentId, minTrustScore, requiredFields, jsonSchema, invariants, rejectRefusals, fallbacks, spendPolicy |
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 params: agentId*, chainId |
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 params: agentId*, chainId, transactionAmountUsd* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.