# Agent Paywire Alerts Subscription

> Agent Paywire Alerts Subscription is a paid API for AI agents from api.agentpaywire.com, paid per call via x402, $2/call, status unknown (last checked 2026-10-29).

Registers a webhook to receive signed push notifications on AI agent payment topics such as SDK security, Lightning releases, wallets, and protocol specs.

## Facts

- Endpoint: POST https://api.agentpaywire.com/v1/alerts?utm_source=zero.xyz
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-paywire-alerts-subscription-9e76e477
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Il_ie2RES96u9-g84SwyE

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 agent-paywire-alerts-subscription-9e76e477 -d '<json body>'
```

Example prompt: Subscribe my webhook at https://myserver.example.com/hooks/paywire to Agent Paywire alerts for protocol-specs and sdk-security topics so I get notified whenever there are updates.

## When to prefer this

Use this endpoint when you need proactive, push-based notifications about AI agent payment infrastructure changes rather than polling. It is ideal for agents or CI/CD systems that need to react immediately to security advisories, protocol spec changes, or Lightning wallet/release updates without continuously querying a news or changelog feed. Prefer it over manual polling or RSS feeds when you need structured, signed, machine-readable webhook payloads and want to filter by specific topic categories.

## Known failure modes

- Invalid or unreachable webhook_url — endpoint returns an error if the URL is not a valid public HTTP/HTTPS address
- Empty or out-of-range topics array — must contain 1 to 4 valid topic enum values; invalid topic strings cause validation failure
- Payment failure — as a $2 USDC x402-gated endpoint, failure to include valid payment header results in 402 Payment Required
- Duplicate subscription — re-registering the same webhook/topic combination may return a conflict or overwrite existing subscription
- Expired subscription — the returned expires_at date means the subscription silently stops delivering after that date unless renewed

## How this service works

Subscribe a webhook to Agent Paywire alerts for 30 days. POST JSON with webhook_url and one to four topics: sdk-security, lightning-releases, lightning-wallets, protocol-specs. One subscription is 2.00 USDC. The token and HMAC secret are returned once.

## Output

Returns a subscription object containing a unique subscription ID (UUID), the list of topics subscribed, and an expiration timestamp indicating when the subscription will lapse.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "topics": {
   "type": "array",
   "items": {
    "enum": [
     "sdk-security",
     "lightning-releases",
     "lightning-wallets",
     "protocol-specs"
    ],
    "type": "string"
   },
   "maxItems": 4,
   "minItems": 1,
   "description": "One to four topic ids. Required."
  },
  "webhook_url": {
   "type": "string",
   "description": "Public http or https URL that receives signed POSTs. Required."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "00000000-0000-4000-8000-000000000002",
  "topics": [
   "protocol-specs"
  ],
  "expires_at": "2026-11-19T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-paywire-alerts-subscription-9e76e477/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentpaywire.com](https://www.zero.xyz/host/api.agentpaywire.com/llms.txt)