# AEML Gauge Watchlist Subscription Token

> AEML Gauge Watchlist Subscription Token is a paid API for AI agents from aeml-x402.zeabur.app, paid per call via x402, $9.9/call, status unknown (last checked 2026-09-15).

Issues a one-time-payment stateless HMAC-signed subscription token granting batch watchlist access (/gauge/watch and /gauge/watch-changes) for up to 30 industry:entity pairs, with no account or login required.

## Facts

- Endpoint: GET https://aeml-x402.zeabur.app/gauge/subscribe
- Price: $9.9/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aeml-gauge-watchlist-subscription-token-c9ba8398
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2ItKxWNQxlTD674odp7ek

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 aeml-gauge-watchlist-subscription-token-c9ba8398
```

Example prompt: Pay for a one-time gauge watchlist subscription token — I want to monitor up to 30 industry and entity signals in batch without creating an account, so I can poll for changes using a bearer token I'll store myself.

## When to prefer this

Use this endpoint when you need batch watchlist access (up to 30 industry:entity pairs) via /gauge/watch or /gauge/watch-changes and want a stateless, account-free authentication model. Prefer this over per-call pay-per-use endpoints when you expect to poll frequently or need incremental delta tracking across many entities. Not needed for free-tier single lookups like coverage, history-preview, or discovery endpoints.

## Known failure modes

- Payment not received or insufficient — token not issued
- x402 payment protocol error — request rejected before token generation
- Token already active but endpoint called again — new token issued consuming another payment
- Malformed payment header — 402 response with no token
- Network timeout during token generation — retry required

## How this service works

[SUBSCRIPTION] Pay once to mint a STATELESS signed token (HMAC - no account, no login, no session, no server-side storage). Send it as Authorization Bearer on /gauge/watch and /gauge/watch-changes to read a batch watchlist without per-call payment. Default validity 30 days. The free tier is unaffected. Priced above the default agent maxValue on purpose - minting a subscription should be a deliberate act, not an accident.

## Output

Returns a stateless HMAC-signed bearer token, its expiration datetime (ISO-8601), the plan code, number of valid days, usage instructions for calling /gauge/watch and /gauge/watch-changes, and a neutrality disclaimer. The token is client-stored and requires no server-side session.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "const": "json"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aeml-gauge-watchlist-subscription-token-c9ba8398/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aeml-x402.zeabur.app](https://www.zero.xyz/host/aeml-x402.zeabur.app/llms.txt)