# minia2a Significant Digits Calculator

> minia2a Significant Digits Calculator is a paid API for AI agents from minia2a.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Returns the count of significant digits (significant figures) in a given numeric input

## Facts

- Endpoint: GET https://minia2a.uk/x402/significantDigits?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/minia2a-significant-digits-calculator-4e280e08
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qJlOhPtdXOWijukAsdTG-

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 minia2a-significant-digits-calculator-4e280e08
```

Example prompt: How many significant digits are in the number 0.004560? I need to verify it for a chemistry calculation.

## When to prefer this

Choose this endpoint when you need a programmatic, pay-per-call computation of significant figures for a number, especially in automated science, education, or data validation pipelines where precision matters. Prefer over manual calculation when processing many numeric values or when integrating into an agent workflow.

## Known failure modes

- Missing or malformed 'input' query parameter returns an error
- Non-numeric string input may return an unexpected result or error
- Very large or very small numbers in unusual formats may not parse correctly
- Network or payment failure (402) if USDC balance is insufficient

## How this service works

Significant Digits

## Output

Returns the number of significant digits (significant figures) present in the provided numeric input, useful for verifying scientific precision and rounding rules.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "method": {
     "type": "string"
    },
    "bodyType": {
     "type": "string"
    },
    "queryParams": {
     "type": "object"
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/minia2a-significant-digits-calculator-4e280e08/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from minia2a.uk](https://www.zero.xyz/host/minia2a.uk/llms.txt)