# Delx Webhook Delivery Plan

> Delx Webhook Delivery Plan is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Generates a deterministic webhook delivery plan including signature, idempotency, acknowledgement, and retry strategy for a given event object.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/webhook-delivery-plan
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-webhook-delivery-plan-027ff2c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ekNmge9rXqOCVdIqRyX-0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-webhook-delivery-plan-027ff2c9 -d '<json body>'
```

Example prompt: Generate a webhook delivery plan for this order-created event — I need the signature scheme, idempotency key strategy, acknowledgement requirements, and retry policy before I wire this into production: {"type":"order.created","orderId":"ord_123","amount":99.99}.

## When to prefer this

Choose this endpoint when you need a deterministic, stateless preflight analysis of webhook delivery parameters — signature, idempotency, acknowledgement, and retry — before committing to a production integration. It is ideal for enterprise agent workflows that require machine-readable advisory output without any side effects, upstream data retention, or external service calls. Prefer it over manual policy design when you need consistent, reproducible recommendations at low cost ($0.003 USDC per call).

## Known failure modes

- Missing or malformed event object returns a validation error
- Empty event payload may produce a minimal or incomplete plan
- Malformed JSON in the event field causes a parse error and rejection
- Network timeout returns no result; the call is stateless and safe to retry

## How this service works

Produce a signature, idempotency, acknowledgement, and retry plan for webhooks. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, memory-only, and has no paid upstream or input retention. Results are advisory; the caller remains responsible for authoriz…

## Output

Returns a deterministic machine-readable JSON object containing a structured webhook delivery plan with recommendations for signature scheme, idempotency key strategy, acknowledgement expectations, and retry/backoff policy for the submitted event.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "event": {
   "type": "object",
   "description": "Input field: event."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "schema": "delx/util-webhook-delivery-plan/v1",
  "max_attempts": 8,
  "retry_strategy": "exponential_full_jitter",
  "require_signature": true,
  "require_replay_window": true,
  "idempotency_key_source": "event.id",
  "acknowledge_within_seconds": 10
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-webhook-delivery-plan-027ff2c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)