the402 endpoint detail

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mcp.barker.money barker_execution_quote

https://mcp.barker.money/barker_execution_quote

answers 402

EXECUTION QUOTE (non-custodial): buy an unsigned, ready-to-sign transaction that deposits into or redeems from a stablecoin vault. Returns transaction_request {chainId,from,to,data,value} + route + risk summary + approval info. Barker NEVER broadcasts and never holds funds — return the transaction to YOUR user's wallet to sign; vault shares always go to signer_address…

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
50000 atomic
Network
not established
Pay to
0x83f15f5bea445109e255ab82622fbdfecd1e4c9f
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
213 ms
Payment options
6 usable of 6
Last checked
2026-08-15T14:31:12.213Z (8d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fmcp.barker.money%2Fbarker_execution_quote"