402lounge
402lounge reads the x402 payments your AI agents make in USDC on Base and turns them into receipts and monthly documents your accountant can book.
402lounge
402lounge reads the x402 payments your AI agents make in USDC on Base and turns them into receipts and monthly documents your accountant can book.
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Polar API key.Last updated: Nov 7, 2026, 07:32 PM
Receipts and a register for AI agents that pay with x402
An x402 payment leaves only a USDC transfer to a wallet address, and an accountant cannot book that. 402lounge names the seller, writes a receipt for every payment and turns a month of them into one document per seller.
Audience
Companies whose AI agents pay with x402, and the sellers behind those APIs
Pricing
Free €0 (one agent), Books €29/month, Books for teams €99/month, large companies on request. Yearly plans get 2 months free.
Team size
1 person
Funding
Bootstrapped
Domain Rating
402lounge.com
Ahrefs Domain Rating measures backlink profile strength on a 0 to 100 logarithmic scale.
Marketing channels
Additional info
Every receipt links to its transaction on Base. MCP server listed in the official MCP registry, connects to Claude, ChatGPT and Cursor. CSV and DATEV export. Dashboard in 11 languages. Made in Germany.
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