# Solo Reward Poisson Standard Deviation — Batch Calculation

> Solo Reward Poisson Standard Deviation — Batch Calculation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Computes the Poisson standard deviation of solo Bitcoin mining rewards for multiple mining scenarios in a single batch request.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-mining-reward-deviation-batch?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solo-reward-poisson-standard-deviation-batch-calculation-6bdb1663
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hVNyCQ2fRIkG96_9t75a2

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 solo-reward-poisson-standard-deviation-batch-calculation-6bdb1663 -d '<json body>'
```

Example prompt: Can you batch-calculate the Poisson standard deviation for solo Bitcoin mining rewards across these two scenarios: one with an expected 4 blocks and a 3.125 BTC reward, and another with 4.4 expected blocks and a 3.4375 BTC reward?

## When to prefer this

Choose this endpoint when you need to evaluate Poisson-based reward variability for multiple solo Bitcoin mining configurations in a single API call, avoiding repeated single-row requests. It is best suited for statistical modeling, scenario comparison, or risk analysis workflows where reward_btc and expected_blocks inputs are already known. Prefer this over single-calculation endpoints when processing 2–200 scenarios simultaneously. Not appropriate when live price feeds, real-time hashrate data, or profitability guarantees are required.

## Known failure modes

- Missing required fields (expected_blocks or reward_btc) in any row returns a validation error
- Values of zero or negative for expected_blocks or reward_btc are rejected due to exclusiveMinimum constraint
- Exceeding 200 rows in the rows array returns a maxItems violation error
- Malformed JSON body returns a 400-level parse error
- Payment failure or insufficient USDC balance returns a 402 Payment Required response

## How this service works

Solo reward Poisson standard deviation — Batch calculation: Batch calculation for Solo reward Poisson standard deviation. 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 batch calculation report.

## Output

Returns a bounded batch calculation report containing the Poisson standard deviation for each input row, derived from the supplied expected_blocks and reward_btc values. The report covers up to 200 rows per request and discloses the formula and units used. No live price data, active mining figures, or guaranteed return projections are included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "expected_blocks",
     "reward_btc"
    ],
    "properties": {
     "reward_btc": {
      "type": "number",
      "default": 3.125,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     },
     "expected_blocks": {
      "type": "number",
      "default": 4,
      "maximum": 10000000000000000,
      "minimum": 0,
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "reward_btc": 3.125,
     "expected_blocks": 4
    },
    {
     "reward_btc": 3.4375000000000004,
     "expected_blocks": 4.4
    }
   ],
   "maxItems": 200,
   "minItems": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solo-reward-poisson-standard-deviation-batch-calculation-6bdb1663/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
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