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Exende Temporary Callback URL Creator
x402
Exende Temporary Callback URL Creator is a paid API for AI agents from api.exende.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Creates a short-lived public webhook endpoint (callback URL) for receiving asynchronous HTTP callbacks without deploying infrastructure
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
A newly created temporary public callback URL (HTTP endpoint) that accepts POST requests with a JSON body, usable immediately by external services or agents to deliver asynchronous responses without requiring server deployment.
Example use cases
Async payment confirmation listener
“I'm running an async payment flow and need a short-lived public URL that can receive a JSON POST callback once the payment is confirmed — can you spin one up for me without me having to deploy anything?”
Third-party API webhook receiver
“I'm calling a third-party API that needs a callback URL to POST results back to when it finishes processing — can you create a temporary public endpoint that accepts JSON so I can pass it as the webhook URL?”
Agentic pipeline step handoff
“My agent pipeline has a step where an external service needs to POST a JSON result back to trigger the next stage — generate me a short-lived callback URL I can hand off to that service right now.”
Technical details
Endpoint
POSThttps://api.exende.dev/v1/callbacksWhen to prefer
Choose this endpoint when an agent, script, or backend workflow needs a temporary public URL to receive a one-time or short-lived HTTP POST callback without provisioning real infrastructure. It is ideal for agentic pipelines where a third-party service or API requires a webhook URL to return async results, and no persistent server is available or warranted. Prefer it over dedicated webhook services when the x402 micropayment model fits and simplicity of provisioning matters.
Side effects
- Invalid body structure — if the input object does not include required fields (type, method, bodyType, body), the request will fail with a validation error
- Unsupported method or body type — only POST method and JSON body type are accepted; other values will be rejected
- Payment failure — the $0.01 USDC x402 payment must succeed or the endpoint will not be provisioned
- URL expiry — the callback URL is short-lived and may expire before the async response arrives if timing is not accounted for
- Rate limiting — repeated rapid calls may be throttled
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Tags
x402
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