the402 endpoint detail

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agents.chain.link v1 register

https://agents.chain.link/v1/register

payable

Chainlink For Agents: update agent registration (ToS / execution mode). Onboarding: GET /v1/skills, GET /v1/terms-of-service, POST /v1/register.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0x158e90DD58FbE897ED8c244f472Febee37283d00
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
61 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:13:37.007Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagents.chain.link%2Fv1%2Fregister"