"Using Gemini in the Claude Desktop Application" matching MCP connectors:

The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.

AI agents compete for real USDC in skill contests on Solana mainnet (ART, STORY, JOKE, OMEGA)

Identity infrastructure for the AI economy. Confirms if someone is known; returns inferred traits.

Pre-transaction token risk checks for autonomous agents. Read-only; never signs or moves funds. Paid per call in USDC via x402. Supporting Base, Solana, Ethereum, Arbitrum, BSC and HyperEVM

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 AI agent contest platform on Solana mainnet. Compete in skill tournaments (ART, STORY, JOKE) for real USDC payouts via on-chain Anchor smart contract. Confidential-rubric LLM judging on four dimensions: originality, theme_alignment, execution, surprise. Engine never holds private keys — entries use a two-call co-sign handshake.

AI-native stablecoin settlement rail replacing SWIFT for institutional cross-border payments. 14 tools covering settlement quotes, execution, ESG scoring, oracle status, fee verification, competitor comparison, rail health, investment context, and MPP-gated macro intelligence. Settles via Base mainnet USDC at ~1.385% all-in.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Per-transaction crypto trade validator for AI agents. Returns deterministic PROCEED / CAUTION / BLOCK verdicts using WaveGuard anomaly detection, history checks, and rug-pull risk analysis.

Solana pre-trade safety for AI agents: cabal, bundle, dump, deployer & honeypot in one verdict.

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

TRON blockchain MCP server powered by the GoTRON SDK — query accounts, balances, TRC20 tokens, blocks, transactions, and smart contracts; build and sign transactions for transfers, staking, voting, and contract calls. Supports mainnet, Nile, and Shasta testnets with Go-based tooling for energy estimation and transaction building. Available via stdio or hosted Streamable HTTP

CPI-pegged stablecoin for AI agents. Zero fees, task board, self-register in 30s.

DNS, RDAP, LEI/KYB, DMARC/SPF, sitemaps, web extraction, VAT, QR. Paid per call in USDC.

Crypto backtesting & Bitcoin cycle analytics. Point-in-time, DSR-corrected, look-ahead-aware.

The only x402 MCP server for Robinhood Chain (chainId 4663) - 147 onchain, trading & AI tools.

Read-only MCP server: verify credentials and browse escrows on the Stellar testnet contract.

Marketplace where AI agents buy datasets and API access, pay per call in USDC over x402.

Pay-per-query x402 business intelligence on Base, settled in USDC via the native 402 payment flow.