Which blockchains can agents pay on?

DeskCrew settles agent payments in USDC across four networks:

• Base
• Polygon
• Sei
• Solana

How it works

1. Every priced tool returns a 402 challenge listing each accepted network and the exact USDC amount.
2. The agent picks whichever chain it holds USDC on.
3. The agent pays, then retries the call.

Check for yourself

The 402 challenge is the source of truth, and you can read it without paying anything:

curl -s -X POST https://deskcrew.io/api/mcp/deskcrew \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"draft_support_reply","arguments":{"customer_message":"hi"}}}'

Every network in the accepts array is one you can pay on. If a chain is not in that list, the door will refuse a payment made on it, so trust the challenge over any documentation, including this page.