# At-least-one solo block probability — Single calculation

> At-least-one solo block probability — Single calculation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Calculates the probability of finding at least one solo block given expected blocks per day and a duration in days

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-mining-block-probability-calculate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/at-least-one-solo-block-probability-single-calculation-d3a90690
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_daYERA-MydiDQCCuO0TPN

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 at-least-one-solo-block-probability-single-calculation-d3a90690 -d '<json body>'
```

Example prompt: What's the probability of finding at least one solo block if I expect 0.01 blocks per day over 100 days? Give me the calculation report.

## When to prefer this

Use this endpoint when you need a quick, single-shot probability calculation for solo block mining given a known expected daily block rate and a time horizon. It is purpose-built for this specific formula and is more appropriate than a general statistics engine when you want a transparent, auditable result with disclosed formula and units at minimal cost ($0.01 USDC).

## Known failure modes

- Invalid input: days or expected_blocks_per_day set to 0 or negative (exclusiveMinimum constraint violation)
- Input values exceeding maximum bounds (1e16) rejected
- Missing required fields (days or expected_blocks_per_day) return validation error
- Payment failure or insufficient USDC balance prevents call from completing

## How this service works

At-least-one solo block probability — Single calculation: Single calculation for At-least-one solo block probability. Supplied mining assumptions only; formula and units disclosed. No live prices, mining or guaranteed return. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one bounded single calculation report.

## Output

A bounded single calculation report stating the probability (between 0 and 1) of finding at least one solo block, given the supplied expected_blocks_per_day rate and duration in days, computed using a disclosed formula with disclosed units. No live price data, actual mining data, or guaranteed return information is included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "object",
   "default": {
    "days": 100,
    "expected_blocks_per_day": 0.01
   },
   "required": [
    "expected_blocks_per_day",
    "days"
   ],
   "properties": {
    "days": {
     "type": "number",
     "default": 100,
     "maximum": 10000000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "expected_blocks_per_day": {
     "type": "number",
     "default": 0.01,
     "maximum": 10000000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/at-least-one-solo-block-probability-single-calculation-d3a90690/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)