# Numeral Systems Radix Converter

> Numeral Systems Radix Converter is a paid API for AI agents from numeral.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Converts an integer from one numeric base (radix) to another, supporting bases 2 through 36.

## Facts

- Endpoint: POST https://numeral.openverbs.com/v1/radix
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numeral-systems-radix-converter-3ce5cc5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2u_meJ5Y781arHeBAZ1pL

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 numeral-systems-radix-converter-3ce5cc5f -d '<json body>'
```

Example prompt: Convert the number 255 from base 10 to base 16 for me.

## When to prefer this

Choose this endpoint when you need a reliable, paid, API-based radix/base conversion without running local code — especially useful in agent pipelines where executing arbitrary math code is restricted, or when you want a clean microservice call for base conversion in workflows spanning bases 2 through 36.

## Known failure modes

- Input value contains characters invalid for the specified fromBase (e.g. '9' in base 8)
- fromBase or toBase outside the allowed range of 2–36 returns a validation error
- Empty or missing value field triggers a required-field error
- Value string exceeds 4096 characters
- Non-integer or floating-point input is rejected

## How this service works

Convert an integer between numeral bases 2–36 (binary, octal, hex, base36, …). Arbitrary size via BigInt; digits are case-insensitive and a leading minus is allowed.

## Output

Returns the numeric value expressed in the target base as a string. The agent receives the converted representation of the input integer in the requested radix, ready for display or further computation.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "type": "object",
     "properties": {
      "value": {
       "type": "string",
       "minLength": 1,
       "maxLength": 4096,
       "description": "The integer to convert, in fromBase."
      },
      "fromBase": {
       "type": "integer",
       "minimum": 2,
       "maximum": 36,
       "description": "Source base."
      },
      "toBase": {
       "type": "integer",
       "minimum": 2,
       "maximum": 36,
       "description": "Target base."
      }
     },
     "required": [
      "value",
      "fromBase",
      "toBase"
     ],
     "additionalProperties": false
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  }
 },
 "required": [
  "input"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numeral-systems-radix-converter-3ce5cc5f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numeral.openverbs.com](https://www.zero.xyz/host/numeral.openverbs.com/llms.txt)