# minia2a Bell Number Calculator

> minia2a 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 2026-09-15).

Returns the nth Bell number, a mathematical sequence counting the number of ways to partition a set

## Facts

- Endpoint: GET https://minia2a.uk/x402/x402-bell-number
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/minia2a-bell-number-calculator-c4d9ce28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vm_4fCp__8iYEiy03DzlW

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-bell-number-calculator-c4d9ce28
```

Example prompt: What is the 8th Bell number? I need to know how many ways a set of 8 elements can be partitioned.

## When to prefer this

Use this endpoint when you need to quickly compute Bell numbers for combinatorial math, set partitioning problems, or verifying partition counts without implementing the algorithm yourself. Best suited for small-to-medium values of n where a fast, pay-per-call approach is preferred over a local computation library.

## Known failure modes

- Missing or invalid 'input' parameter returns an error
- Very large values of n may exceed computational limits or timeout
- Non-integer or negative inputs may return an error or unexpected result
- Payment verification failure returns 402 Payment Required

## How this service works

minia2a service: x402-bell-number

## Output

Returns the Bell number B(n) — an integer representing the number of ways to partition a set of n elements into non-empty subsets.

## 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"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/minia2a-bell-number-calculator-c4d9ce28/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)