APIs for AI agents
Language models know a lot, but they can’t check today’s price, read a new review or receive an email. These guides connect agents to live data and real inboxes, with working setup for Claude, Cursor and your own code.
Spare MailboxGive your AI agent an email inboxA remote MCP server that creates addresses and returns OTP codes and magic links. Test sign-up flows with Playwright, or let an agent verify its own accounts. No key needed to start.Amazon Data APIBuild an AI shopping agentClaude searches Amazon, reads review summaries, checks every seller’s offer and explains its pick, in 23 marketplaces, through the Amazon Data MCP server.Yahoo Finance TurboBuild a stock research agentA short Python agent using Claude tool use over live quotes and price history, so every number comes from data and carries a date.Amazon Data APIAmazon MCP serverInstall amazon-data-api-mcp in Claude Code, Claude Desktop or Cursor and get 12 Amazon tools.Yahoo Finance TurboStock prices in Google SheetsApps Script formulas for live quotes and past closes, without GOOGLEFINANCE.