Free · for any x402 seller

Weigh Station

Before your agent pays a service, it pulls in here. Like a highway weigh station, we check that the load matches the paperwork. We compare the real price and the wallet that gets paid against the service’s public listing. Checking costs nothing: we read the service’s price quote without paying it, and we don’t charge you.

Coding agents

Claude Code, Codex, Cursor and 75+ more. Paste into your terminal:

npx skills add https://tollkit.dev

Chat apps

Claude, ChatGPT and others. Add the Tollkit connector; the tools are find_service and check_service.

What it does

Find a paid tool. Describe the job (“product price lookup”, “send SMS”). You get matching services from Coinbase’s public x402 index, each checked live.

Check before paying. For any x402 address: the live price, the network, and the wallet the money goes to. If that wallet differs from the public listing, you get a clear warning.

Neutral. Results are ordered by whether a service answered with a live price, then by how many different wallets have paid it. No paid placement, and Tollkit’s own tools get no boost.

Try it in your browser

Both are free and need no key. They open the raw results your agent would read.

Find tools for “product price lookup” →

Check one service before paying →

For sellers: monitoring

$5 per endpoint, per 30 days · paid in USDC · nothing renews by itself

We check your endpoint every 15 minutes and send a signed webhook when something changes:

DownAfter two failed checks in a row. Once, not every 15 minutes.
Back upWhen it recovers.
Wrong walletIf your quote starts asking buyers to pay a wallet that isn’t yours.
Price changedWhen the amount you quote changes.
ExpiringThree days before your 30 days end.
Public recordState and 30-day uptime anyone can look up. Never your webhook.

Sign up in three steps

  1. Prepare (free). We read the wallet your endpoint asks buyers to pay. 
    curl -s -X POST https://extract.tollkit.dev/weigh/prepare \
  -H 'content-type: application/json' \
  -d '{"url":"https://your-api.com/endpoint","webhookUrl":"https://your-app.com/hooks/weigh"}'
  2. Sign the returned message with that same wallet. Free, moves no money, and proves the endpoint is yours.
  3. Pay $5: POST the same fields plus signature to /weigh/subscribe with any x402 client. A bad signature or wallet mismatch is refused and never charged.

Look up any endpoint’s record: GET https://extract.tollkit.dev/weigh/status?url=…

Questions

Does checking cost anything or pay the service?
No. We send one unpaid request and read the price it quotes. Nothing is ever paid.
Can a seller pay to rank higher?
No. Monitoring buys alerts and a status record. It never changes what the checks report or where a service ranks.
Does it cover services that aren’t Tollkit’s?
Yes. Any x402 service. Tollkit’s own tools are checked and ranked by the same rules.
What does the wrong-wallet warning mean?
The service’s live price quote asks buyers to pay a different wallet from the one in its public listing. Confirm the recipient before paying.