# Trust.zuluworksai.com — Featured Listing Subscribe

> Trust.zuluworksai.com — Featured Listing Subscribe is a paid API for AI agents from trust.zuluworksai.com, paid per call via x402, $50/call, status down (last checked 2026-09-15).

Pays to feature a specific AI agent endpoint in the trust-ranked public index, returning a badge and listing ID valid through a paid-through date.

## Facts

- Endpoint: POST https://trust.zuluworksai.com/api/featured/subscribe
- Price: $50/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/trust-zuluworksai-com-featured-listing-subscribe-88d9fb59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xKSrqfGtZzuvGgsNDx43P

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 trust-zuluworksai-com-featured-listing-subscribe-88d9fb59 -d '<json body>'
```

Example prompt: Feature my endpoint 'endpoint-abc-789' in the ZuluWorks AI trust index on the premium plan — my paying wallet is 0xABCDEF1234567890ABCDEF1234567890ABCDEF12.

## When to prefer this

Choose this endpoint when you want to programmatically pay to feature and badge a specific AI agent endpoint (x402, MCP, or A2A) in the ZuluWorks trust-ranked public index. Prefer this over manual submission forms when orchestrating agent-to-agent discovery workflows or when you need a machine-readable listing_id and expiry date returned immediately after payment.

## Known failure modes

- Payment failure: wallet has insufficient USDC balance for the $50 fee, returning a payment error
- Invalid endpoint_id: the specified endpoint does not exist in the index, returning a 404 or validation error
- Invalid plan value: plan enum not matching 'basic' or 'premium', returning a 400 validation error
- Malformed wallet address: wallet not a valid 0x Ethereum address, causing request rejection
- Duplicate subscription: endpoint already has an active featured listing for the given plan period
- Network or facilitator timeout: x402 payment channel unavailable, causing a 503 or timeout error

## How this service works

Trust-ranked public index of 1141 AI agent endpoints (x402, MCP, A2A). 1089 confirmed alive right now, 52 dead-but-listed.

## Output

Returns a JSON object with ok (boolean), the plan tier (basic or premium), a display badge string (e.g. '⭐ Featured'), a unique listing_id (e.g. 'feat-abc123'), and a paid_through date indicating when the featured listing expires.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "plan",
  "wallet",
  "endpoint_id"
 ],
 "properties": {
  "plan": {
   "type": "string"
  },
  "wallet": {
   "type": "string",
   "description": "Paying wallet (0x...)"
  },
  "endpoint_id": {
   "type": "string",
   "description": "Endpoint to feature"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "ok": {
   "type": "boolean"
  },
  "plan": {
   "enum": [
    "basic",
    "premium"
   ],
   "type": "string"
  },
  "badge": {
   "type": "string",
   "example": "⭐ Featured"
  },
  "listing_id": {
   "type": "string",
   "example": "feat-abc123"
  },
  "paid_through": {
   "type": "string",
   "format": "date",
   "example": "2026-08-20"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trust-zuluworksai-com-featured-listing-subscribe-88d9fb59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from trust.zuluworksai.com](https://www.zero.xyz/host/trust.zuluworksai.com/llms.txt)