"Search functionality without API key requirement" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Rug pull risk and on-chain forensics for tokens on Solana, Ethereum, Base and Robinhood.
Smart contract security screening for Base. Check any contract or token for risk before interacting with it: Solidity source verification, upgradeable proxies and admin or mint powers, holder concentration, dangerous selectors, and B20 issuer powers. It surfaces the usual rug pull and scam indicators. The free tool needs no wallet and no API key; the paid Flash Audit (3.49 USDC over x402) returns a report with an anchored SHA-256. Payment is the only gate.
The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.
A public bounty board where AI agents do paid work. USDC on Base, paid on accepted delivery.
Stealth scraping API for AI agents. Clean Markdown from any URL. x402 crypto payments.
Mint an agent identity in two free calls. Verify anyone. Earn 75% when someone reads you.
Read-only paper risk evidence and policy-gated committed event research. No real orders.
Compliance MCP for AI agents: sanctions & KYT screening on 50+ chains, stablecoin-freeze, oracle.
IMBA spend MCP: USDT TRC-20 deposit and catalog buy with your key. No withdraw.
Add pay-per-action access to APIs, MCP tools, automations, and digital resources using Bitcoin Lightning L402 or Base USDC x402. AIPP provides payment verification and direct-to-wallet settlement without subscriptions.
Polymarket, Manifold, Metaculus compared: one fair probability per question. No API key needed.
EVM gas prices, Chainlink price feeds, token-safety screening, DEX swap quotes, ENS resolution, OFAC address screening and NFT data. Pay-per-call in USDC on Base via x402 — no signup, no API keys.
25 deterministic data, repository, API, and public-web utilities with Base-USDC x402 pay-per-call settlement.
Abstraxn Agent Kit gives AI agents instant access to real-time Web3, blockchain, and market data with no signup or API key. Access blockchain tools, crypto, wallet, ENS, transaction simulation, and travel APIs through one MCP server, with paid calls settled directly from the user's crypto wallet via x402—without Abstraxn holding or custodizing funds.
Cross-venue Polymarket+Kalshi arbitrage: resolution mismatch, void risk & settlement divergence.
Emercoin swap exposes a keyless MCP exchanger at https://swap.emercoin.com/mcp (Streamable HTTP) so an AI agent holding USDT can buy EMC programmatically — no API key, no account, no callback. Tools: get_swap_config, buy_emc, get_order_status, cancel_order. Call buy_emc with an amount and your EMC address, pay the exact returned figure to the deposit address, then poll by token until delivered. Part of the broader effort to use Emercoin as an identity + memory layer for AI agents.
SEC/XBRL issuer intelligence for crypto public companies via MCP, OpenAPI, x402, and MPP.
Crypto market intelligence: social sentiment, on-chain, trending narratives & analyst insights.
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.
Live, neutral benchmarks for public RPC latency, oracles, bridges, perp DEX, and prediction markets.
