"An overview of knowledge graphs" matching MCP connectors:

Enumerate and inspect PubFi capabilities, then execute an exact selected route.

Daily editorials, exit costs, depth concentration, tiers, and sealed records. No commodity futures.

Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.

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.

Keyless prediction-market data across 12 venues plus paper-trading of crypto spot, futures, and PM.

Real-time curated crypto news for AI agents with sentiment, recaps, and search.

Crypto positioning and macro intelligence for agents — the signal set a trading desk watches, delivered as structured JSON. Multi-venue perpetual funding and open interest across Binance, Bybit and OKX (largest-open-interest perp per venue, thin venues excluded), Ethereum exchange whale flows, Bitcoin network health, DeFi TVL and stablecoin supply, Fear & Greed, and BTC/ETH/USDT dominance as a risk-on/risk-off regime filter. Plus the macro backdrop that actually drives crypto: Fed funds rate, 2Y

x402 game: take the crown, each take raises the next price 1.5x. hill_status is free.

MCP server for the EmblemAI AgentWallet. Exposes tools for token swaps, DeFi yield farming, liquidity management, portfolio tracking, market research, and memecoin discovery across Solana, Ethereum, Base, BSC, Polygon, Hedera, and Bitcoin. Backed by Agent Hustle (agenthustle.ai) for routing and execution. OAuth 2.0 + PKCE for interactive agents; API key and x402 micropayments also supported.

Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.

EVM gas, Chainlink prices, token-safety, swap quotes, ENS, OFAC & NFT via x402.

Ask what you can't be sure of. Read-only checks on tokens, NFTs, wallets and contracts.

Trust filter for ERC-8004: only ~3.8% of x402 endpoints hit 5+ payers/30d. Free MCP; x402 upgrade.

Monetize any MCP server: x402 paywall, pay-per-call billing in USDC on Base, agent marketplace.

Adversarial verification for AI agents - pay an independent skeptic per verdict in USDC via x402.

The trust layer of the x402 economy: free conformance checks, attestation, corpus, agent store.

Verified merchants accepting agentic payments on Lightning/L402/BOLT12/USDT — search, verify, pay.

Screen an Ethereum address or ENS name for on-chain reputation risk, sanctions, and reasoning.

40+ Lightning-paid AI tools for agents: calls, SMS, fax, voice, translation. No signup, no keys.

Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.