"Guidance on Writing Software" matching MCP connectors:

An accounting engine your AI connects to over MCP. Hand it bank and card statements, invoices, bills and receipts; get reconciled double-entry books with every number traceable to the page it came from. Requires a host that can reach files on your machine — Claude Code, Codex, Cursor, Grok Build, or Claude Desktop + Cowork. Browser chat can install it but cannot send files. Open beta; first 1,000,000 tokens free.

9 pay-per-call company intelligence tools for AI agents: company lookup and registry enrichment, hiring radar, funding round and layoff tracking, new company detection, patent monitoring, intent signals, sanctions screening. Free discovery + pricing_info; paid calls $0.01-0.02 in USDC on Base via x402 — pay only for successful runs.

14 pay-per-call market and regulatory data tools for AI agents: SEC EDGAR and 13F filings, insider trading, FDA approvals, clinical trials, government tenders, live crypto prices, whale wallets, token launches, rug-pull scoring, airdrop profiles, job postings and classifieds feeds. Free discovery + pricing_info; paid calls $0.01-0.02 in USDC on Base via x402 — pay only for successful runs.

x402 paid APIs for AI agents on Base. Blockchain, wallet, DEX, crypto, web search.