"Understanding Reverse Processes or Reverse Engineering" matching MCP servers:

Enables AI agents to participate in a blockchain-based reverse Turing test game, with tools for session management, room matching, gameplay actions, and automatic play.

Enables AI assistants to resolve .i Web3 domains, reverse lookup wallet addresses, fetch profile records, check domain availability, and retrieve multichain addresses via the DotI protocol.

Enables resolving ENS names to Ethereum addresses and profile records, and reverse-resolving addresses to ENS names, all without requiring an API key.

Enables agents to resolve ENS names to Ethereum addresses and reverse-resolve addresses to ENS names, including avatar URLs, through a pay-per-call x402 micropayment API.

Provides AI agents with tools to purchase a starter audit or triage for legal USDC earning routes, supporting checkout, triage, and payment processes.

Enables AI agents to make pay-as-you-go AI inference requests through x402 with automatic Solana USDC payments, no API keys or registration, while enforcing configurable spending limits.

Keyless crypto payments for AI agents. One MCP call turns any wallet address into a non-custodial crypto payment link or tip jar, no API key and no account, with funds settling straight to your wallet at a 0% platform fee (USDC/USDT, BTC, LTC, DASH, DOGE, ZCASH).

Resolves a company name, registrable domain, or LEI to its GLEIF legal entity record — LEI, legal name, jurisdiction, entity status, and registration status — for $0.05 USDC on Base paid per call over x402, with no signup or API key. Includes a free, no-wallet preview of price and coverage plus hard per-call and per-session spend caps, while misses and ambiguous matches cost nothing.

Enables static security audit of Solidity smart contracts by analyzing source code or deployed bytecode for vulnerabilities, providing risk scores and detailed findings.

Quick-scan a smart contract for rug, honeypot, or centralization risk before sending funds. It combines verified source, live on-chain state, and heuristic Solidity analysis to return a SAFE/CAUTION/HIGH-RISK verdict.

Universal x402 buyer agent — discover, pay for, and call any x402 paid API endpoint from Claude Desktop, Cursor, or Claude Code with automatic USDC payment via AgentCash.

Enables an AI assistant to read token bonding curves, quote trades with fee breakdowns, monitor graduation progress, and optionally launch, buy, sell, or rescue tokens on Arc via arcnow.io.

MCP server that scores the behavioral risk of a wallet on Base before sending it money. Provides a risk score, verdict, and explainable flags based on USDC payment history.

Hashlock Markets — sealed-bid intent-based crypto trading via MCP for AI agents. Atomic cross-chain settlement (Ethereum, Bitcoin, Sui) using HTLC. Six MCP tools for RFQ price discovery without information leakage and HTLC settlement without escrow or bridges. Canonical npm: @hashlock-tech/mcp.

Pay-per-call data and tools for AI agents over x402, by UnyKorn. 360 endpoints: DeFi and market data, multi-chain wallet reads, wallet and token risk signals, SEC filings, web and domain intel, and AI text tools. Settled per call in USDC on Base ($0.001-$0.25). No API keys or subscriptions; unpaid calls return the exact quote first.

MCP server for local transaction signing across EVM, UTXO, Tron, and XRP blockchains, with no network calls or API keys required.

Enables agents to request AtlasYield judgments: get 16-factor vault scores, check whether deposits can be exited at size, list blowup alerts, and compare vaults—all read-only with no key or custody.

Enables cross-chain swap execution across 12 venues and 17 chains, including native Bitcoin as source or destination, with tools for quoting, execution, status, and health checks. No signup, API key, or protocol fee required.

Buy and manage a global eSIM through chat. One universal eSIM for 192 countries, per-MB billing in USDT or USDC across TRON, Solana, BSC, Polygon, Optimism, Arbitrum, TON. Anonymous-flow by default — no account required.

MCP server for the CortexCloud API, enabling pay-per-call AI generation, web search, market data, and blockchain RPC endpoints via the x402 protocol, billed in USDC on Base without API keys or subscriptions.