# Agent Rest Stop – Add Guest Card (24h)

> Agent Rest Stop – Add Guest Card (24h) is a paid API for AI agents from agent-gas-station.agent-gas-station.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Registers a guest card entry valid for 24 hours, associated with a payer identity.

## Facts

- Endpoint: POST https://agent-gas-station.agent-gas-station.workers.dev/v1/RegistryList?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-rest-stop-add-guest-card-24h-cc832a8a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JxD0zlKMN3rFLyEuVuTXp

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-rest-stop-add-guest-card-24h-cc832a8a -d '<json body>'
```

Example prompt: Add a 24-hour guest card for card ID 'card_abc123' under payer 'payer_xyz789'.

## When to prefer this

Use this endpoint when you need to provision a short-lived (24-hour) guest card tied to a specific payer identity, such as granting temporary access to a visitor, event attendee, or contractor without creating a permanent record.

## Known failure modes

- Missing required 'card' or 'payer' field returns a validation error
- Duplicate card registration may fail or overwrite depending on service logic
- Payment of $0.01 USDC not fulfilled triggers x402 payment required response
- Invalid card or payer format may return a 400 Bad Request
- Service unavailability returns a 5xx error

## How this service works

Adds one guest card for 24 hours.

## Output

A confirmation that the guest card has been registered with a 24-hour validity window, likely returning the created card record or a success status with relevant identifiers.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "card": {
   "type": "string"
  },
  "payer": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-rest-stop-add-guest-card-24h-cc832a8a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-gas-station.agent-gas-station.workers.dev](https://www.zero.xyz/host/agent-gas-station.agent-gas-station.workers.dev/llms.txt)