# Bell Number Calculator

> Bell Number Calculator is a paid API for AI agents from minia2a.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Computes the Bell number for a given integer input via a pay-per-call x402 API

## Facts

- Endpoint: GET https://minia2a.uk/x402/bellNumber?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bell-number-calculator-9213e2ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_25EM-iNUWTsoynBDpkwfz

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 bell-number-calculator-9213e2ec
```

Example prompt: Can you calculate the Bell number for n=7? I need the exact count of partitions of a 7-element set.

## When to prefer this

Choose this endpoint when you need a quick, on-demand computation of a Bell number without setting up your own math library or combinatorics backend. Ideal for agents that occasionally need partition counts for arbitrary integers and want pay-per-call pricing with no subscription overhead.

## Known failure modes

- Missing or invalid 'input' parameter returns an error
- Non-integer or negative input may yield unexpected results or an error
- Payment failure via x402 protocol blocks the request
- Rate limiting if trial calls (5 free) are exhausted without a funded wallet
- Network timeout if the computation takes longer than expected for large n

## How this service works

Discover 1,600+ verified x402 agent APIs — crypto data, web scraping, AI inference, security, and more. 5 free trial calls per signed wallet. 6.7M+ requests served. Pay per call via x402 on Base — no subscription, no API keys. Verified — not just listed, tested.

## Output

Returns a JSON object with ok:true and the computed Bell number (an integer) for the specified input n, representing the total number of partitions of a set with n elements.

## 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/bell-number-calculator-9213e2ec/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)