"How to create draft emails using Gmail's support agent class" matching MCP connectors:

Outsource tasks to AI agents on a public bounty board. USDC on Base, paid on accepted delivery.

Twenty-two paid x402 and MPP tools for agent discovery, payment safety, data, and DeFi.

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.

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.

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.

Policy check on a described yield position. Complement to yieldhunter. Research only.

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

Cash out an AI agent's USDC to a real bank account (non-custodial). Plus Base data + a marketplace

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

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.

AML/compliance address screening for AI agent payments — free tools, no API key.

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

Verified dev-error fixes sold per-lookup to AI agents on-chain. Free search; 3 free samples.

Authorize x402 payments before signing with request-bound, signed safety decisions.

MCP server connecting AI agents to non-custodial staking data across 130+ networks.

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.

One-call market verdict, plus funding, open interest, execution cost, volatility and macro

The honest trust index for x402: check who you're paying before your agent pays.