"How to find the owner of a website" matching MCP servers:

x402 capability chassis: 170+ AI-callable, pay-per-call data tools (US/global equities, crypto/DeFi, prediction markets, gov/legal, research, infra) settled in USDC on Base mainnet via the Coinbase CDP facilitator. No API keys or accounts — the x402 payment is the auth. Remote MCP at https://the-stall.intuitek.ai/mcp.

MCP server that lets an AI analyst place real bets on Binance prediction markets, using Kelly criterion sizing, and tracks its performance through a transparent record of betting slips and outcomes.

Cross-chain cryptocurrency swaps via Chainflip. Get quotes, execute swaps, and track progress. No API key required to get started.

AgentBureau provides the legal and physical infrastructure for AI agents to operate within the German jurisdiction. We bridge the gap between digital intelligence and real-world action by providing "Embodiment-as-a-Service." Through our API, agents can perform legally binding actions—like sending faxes, mailing physical letters, issuing invoices, forming entire companies (GmbH/UG), ...

Reasoning-puzzle arcade for AI agents with seven generated puzzle families, free samples, automatic answer checking, and ranked play from $0.02 USDC on Base via x402. Connect through MCP or HTTP. Browse and try samples without a wallet; run paid tools locally with an explicit spending limit.

TCG oracle as an MCP server: 22 focused tools. Search 455K+ trading cards, live market snapshots, AI grading and grade-or-not decisions, conformal-calibrated price forecasts with a public accuracy scorecard, card-collateral loan terms, fantasy and sports souls leagues. Every root proven on-chain. Same tools as the hosted endpoint at mcp.the-undesirables.com, over stdio; no keys.

Provides real-time cryptocurrency prices, market cap, and 24h change using CoinGecko, with free access and no API key required.

On-chain crypto indicators (EMA, RSI, VWAP, Bollinger) via Chainlink oracles.

Provides 31 AI-powered crypto trading tools for Claude, Cursor, and any MCP client, enabling strategy creation, backtesting, bot deployment, copy trading, and portfolio management across multiple exchanges.

Pre-trade token safety check for AI agents. Simulates a sell before you buy, then reports honeypot, tax, liquidity, pair age, same-ticker impersonation and owner powers as one low/medium/high/unknown verdict. Fail-closed: when a critical check cannot run it answers unknown rather than guessing low. Publishes its own measured error rate with the benchmark harness in the repo.

A curriculum that teaches AI agents how to spend their own money. Sixteen lessons from "what is a wallet" to your first x402 purchase. Teacher, not butler — never signs, pays, or holds keys.

Provides read-only access to Sandcastle leveraged liquidity positions, live Uniswap V3 and Morpho market data, owner position health, and payoff simulations on Robinhood Chain.

Enables an agent to provision and manage a trading wallet, claim it via passkey, fund it, and trade tokens by prompting while defaulting to simulated paper mode and enforcing owner-only withdrawals and approved routers.

Enables AI agents to spend with the user's own key by paying via USDT TRC-20 and buying Visa/Mastercard prepaid cards, travel eSIMs, and gift cards, and also provides access to policy and how-to documentation.

Connects AI agents to Bitcoin payment rails with owner-defined spending policies and limits.

Lets AI agents fetch live gas prices across multiple EVM chains, compare USD transfer costs, and find the cheapest chain in a single call, with pay-per-call billing via x402.

Teardrop is the native economic layer for AI agents, providing a robust suite of tools for multi-chain portfolio tracking, DeFi yield analysis, and gas estimation. It enables autonomous agents to securely find Web3 data and manage micro-payments on-chain with zero human intervention.

Exposes MCP tools that let an agent search a catalog, inspect a paid service's pricing, fetch it with payment handled automatically, and check its remaining budget and active spending limits. Payments are authorized against a signed mandate from the owner, so agents can buy API access over HTTP 402 without ever holding the owner's private key.

Enables AI agents to score Solana tokens, simulate and decode transactions, and apply owner-defined limits, allowlists and slippage rules before anything is signed, returning a clear allow, confirm, block or freeze verdict. Also supports on-chain enforcement through a Squads multisig so an agent can propose trades but only execute when the gateway approves, with a kill-switch and owner approval flows for risky actions.

Enables scanning and analyzing Binance micro/smallcap coins with sustained positive momentum, filtering by volume band and minimum ATR to find asymmetric high-return bets.