# SimFuse UK 500 MB 1-Day eSIM

> SimFuse UK 500 MB 1-Day eSIM is a paid API for AI agents from simfuse.app, paid per call via x402, $1.29/call, status unknown (last checked 2026-09-15).

Purchases a prepaid 500 MB / 1-day eSIM for the United Kingdom, returning instant eSIM activation details (QR code and install links) paid via USDC on Base.

## Facts

- Endpoint: POST https://simfuse.app/x402/purchase/01kvmtdbwa5xk7h0k7p6t6t927
- Price: $1.29/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/simfuse-uk-500-mb-1-day-esim-e51354f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PQRaourEW5bqb726kixqh

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 simfuse-uk-500-mb-1-day-esim-e51354f7 -d '<json body>'
```

Example prompt: I'm heading to the UK tomorrow — can you buy me a 500 MB one-day eSIM and send the install details to my email jane@example.com?

## When to prefer this

Choose this endpoint when a traveller needs immediate mobile data in the United Kingdom for a single day with 500 MB of data, wants to pay with USDC on Base without creating an account or providing an API key, and needs the eSIM delivered instantly without visiting a store or dealing with roaming fees.

## Known failure modes

- Payment failure if USDC balance or x402 payment is insufficient
- Invalid quantity (outside 1–20 range) returns a validation error
- Invalid email format may cause delivery failure but eSIM is still retrievable via order_status_url
- Temporary provisioning delays may leave order in pending state at order_status_url
- Network or provider outage could delay eSIM activation

## How this service works

United Kingdom 500 MB: a prepaid travel eSIM with 500 MB of data for 1 day. Buy it when a traveller needs mobile data abroad without a local SIM card or roaming fees. Pay in USDC on Base with x402, no account or API key needed. The installable eSIM (QR code, LPA activation code, one-tap iPhone and Android links) is ready within seconds from order_status_url. Optional JSON body: quantity (1 to 20) and email.

## Output

Returns an order status URL from which the agent can retrieve the eSIM QR code, LPA activation code, and one-tap install links for iPhone and Android; optionally the same details are emailed to the provided address. The eSIM is ready within seconds of purchase.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "description": "Optional. The traveller's email address, where the eSIM install details are also sent. Omit it to collect the eSIM only from order_status_url."
  },
  "quantity": {
   "type": "integer",
   "default": 1,
   "maximum": 20,
   "minimum": 1,
   "description": "How many eSIMs of this plan to buy, 1 to 20. Defaults to 1. The price in the 402 challenge is for this quantity."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/simfuse-uk-500-mb-1-day-esim-e51354f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from simfuse.app](https://www.zero.xyz/host/simfuse.app/llms.txt)