For companies Dashboard Send your agent in

Agents pay.
We write the paperwork.

An agent that pays over x402 leaves a USDC transfer to a wallet address. Your accountant cannot book that. 402lounge reads the chain, puts a name and a description on every payment, and turns a month of them into one document per seller. Every receipt links to its transaction on Base.

Send your agent in Set up your company Pricing

Receipts · Oct 30 · 1,284 todayexample

14:02Brackwater Data · Earnings dates and results0.010000

14:02Tulimoa · Briefing, one topic0.020000

13:58Larchfield Analytics · Smart money flows0.050000

13:510x7a0c…e91f · unknown wallet, not reported0.250000

13:49Sablewire · Web search, 10 results0.005000

Voucher · September 2026 · sample

402B-brackwater-2026-000001

Buyer
Acme GmbH, Berlin · DE311234567

Seller
Brackwater Data Level 1

What · agents Juno and OttoCalls · USDC

Latest price, volume and day range28,410 · 284.100000

Earnings dates, estimates and results6,120 · 61.200000

SEC filings with links2,735 · 54.700000

37,265 payments400.000000 USDC

ECB rate per day, provisional359.40 EUR

Reverse charge, § 13b UStG. Self-made voucher, not an invoice of the seller. Every receipt links to its transaction on Base.

Add 402lounge to your agent

One line in the agent's MCP client. From there it signs up on its own, with its wallet, and asks you nothing.

The agent proves its wallet with a signature. No key ever leaves it.
Every payment the wallet makes becomes a receipt, with the transaction linked.
You add an email later, as the way back in, and the company when you want documents.

Setup guide What the MCP server can do

Run this once in a terminal. Claude Code keeps the server for every session.

claude mcp add --transport http 402lounge https://mcp.402lounge.com/mcp

Then tell the agent: "sign up at 402lounge".

Nothing changes in the payment.

Your agents keep paying as they do today, from their own wallets, to the sellers they choose. Here is what happens after.

See the receipts page What the levels mean

An agent pays over x402
A few cents in USDC on Base for a search, a page, a dataset. We read the transfer from the chain once it is confirmed and write a receipt: amount, time, block, hash.
We name the seller
The payTo address is looked up in the register. A verified seller appears with its name and what it sells, in its own words from its 402 answer. An unknown wallet stays marked as unknown, so you see what cannot be booked.
Month end: one document per seller
On the 1st, each finished month becomes one numbered voucher per seller: lines per endpoint, the EUR value at the day's ECB rate, the tax note your accountant needs. PDF and JSON, hashed, never changed afterwards. Part of Books, from €29 a month.

Your agents' spend, in one place your accountant can open.

Every wallet, every seller, every month. The dashboard shows what was paid, to whom, and what still needs a human, and the same answers come back over MCP and REST.

Overview

October 2026 · example · chain read 4 minutes ago

12,480receipts from 6 wallets

1,284.50 USDC1,154.08 € at ECB rates, provisional

96%to verified sellers

5vouchers issued for September

Where the money went

Brackwater DataLevel 1612.400000

Larchfield AnalyticsLevel 1318.250000

SablewireLevel 1196.000000

Tidewell MetricsLevel 1112.350000

Unknown wallets (2)unverified45.500000

Needs a human

418 payments to 2 unknown wallets (45.50 USDC). No seller, no voucher line.

VAT ID not confirmed yet. VIES did not answer at 03:15, check it again under Company.

Wallet 0x9b2e…41a0 of Otto paid 1,140 times but is not confirmed.

Every payment, named

Seller from the register, description from the seller's catalogue or the agent's own report, EUR value at the day's ECB rate. Unknown wallets stay visible as unknown.

What needs a human, listed

Unconfirmed wallets, unknown sellers, a VAT ID VIES has not confirmed yet. The dashboard says what to do, and nothing waits silently.

Open the dashboard Receipts and documents

One ladder for everyone. Four levels.

Buyers and sellers climb the same four levels. A level says what we have checked about a company, and therefore what a document can carry. Nothing is required up front. Every agent account starts on level 1.

Set up your company The levels in detail

What we checked, and what you get

0ListedA wallet or listing is known to us. Nothing proven yet.

1Wallet verifiedThe wallet signed for us, or paid 0.01 USDC from itself.

2CompanyBuyer: name, address and a confirmed email. Seller: the legal entity checked.

3InvoicingBuyer: VAT ID confirmed by VIES. Seller: a signed mandate to invoice in its name.

As a buyer: a company whose agents pay

A receipt for every payment, with the transaction linked

✓

Seller named on the receipt, description from its catalogue

✓

One overview per seller and month, PDF and JSON

✓

Vouchers with the tax case, CSV and DATEV export, archive

Books

As a seller: a service that takes agent money

Listed in the directory, read from your 402 answer

✓

Your name on every buyer's receipt

✓

Booked by buyers as a real counterparty, with your legal entity

✓

Invoices issued in your name, one per buyer and month

Books

Levels 0 and 1 are free. The level 2 check costs €10 a year and is included in Books, from €29 a month.

The directory: services that take agent money.

Every entry is read from the seller's own 402 answer. We show what a machine can verify, and nothing a seller wrote about itself.

Browse the directory List your service

Sell to agents? Put your name on every buyer's receipt.

List your service and prove your wallet once. From then on every payment to it carries your name and your description on the buyer's side. Free on levels 0 and 1, the company check for level 2 costs €10 a year.

List your service Pricing for sellers

One URL and one wallet

Give us the URL of one paid endpoint and the wallet it pays to. We read the rest from your 402 answer. The checks start the same night.

Prove the wallet, climb to level 1

A signature from the wallet, or 0.01 USDC sent from it. From then on buyers see your name, and wallet policies can allow you by level.

Level 3: we invoice for you

With a signed mandate we issue one invoice per buyer and month in your name, numbered, archived, in the EU e-invoice format. Part of Books.

Questions? Write to us.

Tell us how many agents you run and what your accountant needs. A person answers, usually the same day.

hello@402lounge.com For companies

Agents pay.We write the paperwork.