# Retry.exende.dev Durable HTTP Request Executor

> Retry.exende.dev Durable HTTP Request Executor is a paid API for AI agents from retry.exende.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Execute an outbound HTTPS request with automatic retries for rate limits, server errors, and timeouts, backed by a paid durable job with up to 8 attempts over 24 hours.

## Facts

- Endpoint: POST https://retry.exende.dev/v1/retries
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/retry-exende-dev-durable-http-request-executor-f246c064
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__JZCaDZCE5vuIS36tyw3u

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 retry-exende-dev-durable-http-request-executor-f246c064 -d '<json body>'
```

Example prompt: Make a durable POST request to https://api.partner.com/webhooks/orders with body {"order_id": "ORD-9912"} and header Authorization: Bearer abc123 — use exponential backoff, up to 8 attempts, and notify me at https://my-app.com/callbacks with secret mysupersecrethmackey32charslong00 when it's done.

## When to prefer this

Choose this endpoint when you need guaranteed, fault-tolerant delivery of a single outbound HTTP request to an unreliable or rate-limited API — especially when you cannot implement retry logic yourself or need durability beyond a single process lifetime. It is ideal for webhook dispatch, pushing to flaky third-party services, or any scenario where a failed HTTP call must be retried automatically over a 24-hour window with configurable exponential or fixed backoff, and where a signed callback on completion is valuable.

## Known failure modes

- All 8 attempts exhausted without a success code — job marked failed
- Target URL is unreachable or returns non-retryable errors on all attempts
- Callback delivery fails if callback_url is unreachable at job completion
- Invalid or non-HTTPS target URL rejected at submission
- Missing callback_secret when callback_url is provided — validation error
- Request body provided for GET method — rejected
- max_attempts or delay values outside allowed ranges — schema validation error

## How this service works

Execute HTTPS requests reliably with automatic retries for rate limits, temporary server failures, network errors and timeouts. One $0.02 USDC payment creates one durable job with up to 8 attempts and a 24 hour lifetime.

## Output

A durable job record including a job ID, the current status, and per-attempt details (status code, response body, timestamps). On job completion or final failure, an optional signed HMAC callback is delivered to the specified callback URL with the terminal result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "request"
     ],
     "properties": {
      "retry": {
       "type": "object",
       "properties": {
        "strategy": {
         "enum": [
          "fixed",
          "exponential"
         ],
         "type": "string",
         "default": "exponential"
        },
        "max_attempts": {
         "type": "integer",
         "default": 8,
         "maximum": 8,
         "minimum": 1,
         "description": "Included outbound attempts for the $0.02 paid job."
        },
        "max_delay_seconds": {
         "type": "integer",
         "default": 300,
         "maximum": 3600,
         "minimum": 2
        },
        "initial_delay_seconds": {
         "type": "integer",
         "default": 5,
         "maximum": 3600,
         "minimum": 2
        }
       },
       "additionalProperties": false
      },
      "request": {
       "type": "object",
       "required": [
        "method",
        "url"
       ],
       "properties": {
        "url": {
         "type": "string",
         "format": "uri",
         "description": "Public HTTPS destination for the durable request."
        },
        "body": {
         "description": "Optional JSON-compatible outbound request body. GET bodies are not accepted."
        },
        "method": {
         "enum": [
          "GET",
          "POST",
          "PUT",
          "PATCH",
          "DELETE"
         ],
         "type": "string"
        },
        "headers": {
         "type": "object",
         "maxProperties": 32,
         "additionalProperties": {
          "type": "string"
         }
        }
       },
       "additionalProperties": false
      },
      "callback_url": {
       "type": "string",
       "format": "uri",
       "description": "Optional HTTPS endpoint for one signed terminal callback delivery workflow. Requires callback_secret."
      },
      "success_codes": {
       "type": "array",
       "items": {
        "type": "integer",
        "maximum": 599,
        "minimum": 100
       },
       "maxItems": 100,
       "minItems": 1
      },
      "callback_secret": {
       "type": "string",
       "maxLength": 512,
       "minLength": 32,
       "description": "Clien
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/retry-exende-dev-durable-http-request-executor-f246c064/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from retry.exende.dev](https://www.zero.xyz/host/retry.exende.dev/llms.txt)