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api.exende.dev v1 callbacks
https://api.exende.dev/v1/callbacks
answers 402
Create a temporary public webhook endpoint for AI agents and automated workflows that need to receive asynchronous callbacks from external services. Returns a callback URL plus read and wait endpoints. No server deployment, signup, API key, or subscription required.
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
- 0x9d2526Fa73fcb300B78075c4446Ec0B306f1a3f9
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 513 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:22:43.296Z (2h ago)
- Category
- ai-inference
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.exende.dev%2Fv1%2Fcallbacks"