# MRR Ledger — API Pass Purchase

> MRR Ledger — API Pass Purchase is a paid API for AI agents from mrrledger.com, paid per call via x402, $9/call, status unknown (last checked 2026-10-20).

Purchases a time-limited API access pass for MRR Ledger, returning an API key and quota details for querying data on real revenue-generating agentic businesses

## Facts

- Endpoint: POST https://mrrledger.com/api/v1/passes?utm_source=zero.xyz
- Price: $9/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mrr-ledger-api-pass-purchase-d7b10794
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QrWVqQhThKk0BSnbcWN9h

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 mrr-ledger-api-pass-purchase-d7b10794 -d '<json body>'
```

Example prompt: Buy me a hobby plan pass on MRR Ledger so I can start querying real agentic business revenue data — pay for it using USDC.

## When to prefer this

Choose this endpoint when an agent needs programmatic access to MRR Ledger's database of revenue-generating agentic businesses and must first obtain an API key via a crypto micropayment. This is the required first step before any MRR Ledger data queries can be made. Prefer this over manual sign-up flows when operating autonomously with a USDC wallet.

## Known failure modes

- Insufficient USDC balance — payment fails and no key is issued
- Invalid or unsupported plan tier — returns error or no response
- Network or x402 payment protocol failure — transaction not confirmed, no key returned
- Duplicate purchase within active period — key may not be re-issued or may return existing key
- Expiry already passed on a previously issued key — agent must repurchase

## How this service works

Real agentic businesses that make money. Every number sourced.

## Output

Returns a JSON object containing the purchased plan name (e.g. 'hobby'), a live API key (prefixed 'mrl2_live_hobby_...'), the number of days of access, an expiry timestamp (ISO 8601), and the daily request quota (e.g. 2000 requests/day).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "days": 30,
  "plan": "hobby",
  "api_key": "mrl2_live_hobby_...",
  "expires_at": "2026-01-01T00:00:00.000Z",
  "requests_per_day": 2000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mrr-ledger-api-pass-purchase-d7b10794/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mrrledger.com](https://www.zero.xyz/host/mrrledger.com/llms.txt)