"Overview of HTTP (HyperText Transfer Protocol)" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Crypto cost-basis lots (FIFO/LIFO/HIFO/specific-ID), Form 8949 rows, 1099-DA diff. 5 of 8 free.
Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.
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.
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.
Authenticated hosted Streamable HTTP MCP server for crypto data routing through PubFi capability and gateway tools.
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.
Gasless, MEV-protected onchain token swaps for AI agents on 14 EVM chains, built on CoW Protocol.
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.
Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual
PayPerByte — per-byte data for AI agents: x402 USDC on Base, EIP-712-attested. No token.
Keyless prediction-market data across 12 venues plus paper-trading of crypto spot, futures, and PM.
x402-paid agent tools: 18 over HTTP, 14 over stdio. USDC per call, no API key.
Free crypto AML/KYT screening for BTC/ETH/BSC/TRON — risk score, sanctions, source of funds.
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
Daily board of what crypto YouTube channels said: coin calls, stances, catalysts. Free, no key.
On-chain record of stablecoin freezes and seizures. Check any wallet: dated, cited, no risk scores.
Verify and settle x402 stablecoin payments; browse the PayAI Bazaar of x402-payable resources.
Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.
DeFi Protocol Activity Index -- quantitative on-chain activity metric from DefiLlama data
Mine, mint and verify 8004 NONCE proof-of-work art on Ethereum L1.
