the402 endpoint detail

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blockrun.ai sandbox create

https://blockrun.ai/api/v1/modal/sandbox/create

payable

Create a managed Python 3.11 sandbox. Two billing modes selected by 'timeout': ≤300s = flat rate (CPU $0.01, GPU varies). >300s = per-hour billing for the full requested lifetime, no refund on early terminate. Max 24h.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xe9030014F5DAe217d0A152f02A043567b16c1aBf
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
151 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:08:48.350Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fblockrun.ai%2Fapi%2Fv1%2Fmodal%2Fsandbox%2Fcreate"