# Mile-per-second to Foot-per-second Speed Converter

> Mile-per-second to Foot-per-second Speed Converter is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Converts a speed value from miles per second (mi/s) to feet per second (ft/s) using IEEE-754 double precision arithmetic.

## Facts

- Endpoint: GET https://x402-agent.kariguetoazul.workers.dev/api/units/speed/mile-per-second-to-foot-per-second?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mile-per-second-to-foot-per-second-speed-converter-c80c6e4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rFAoXcK6OMO-icznbzjgK

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 mile-per-second-to-foot-per-second-speed-converter-c80c6e4f
```

Example prompt: Convert 5 miles per second to feet per second for me.

## When to prefer this

Use this endpoint when you need a precise, programmatic conversion from miles per second to feet per second with clear unit labeling and IEEE-754 double precision — ideal for physics, engineering, or scientific computing workflows where a quick, reliable API call is preferred over manual calculation.

## Known failure modes

- Missing required 'value' query parameter returns an error
- Negative input values are rejected (minimum is 0)
- Values exceeding 1e+100 are rejected by schema validation
- Non-numeric input causes a validation error
- Payment not provided or insufficient USDC balance triggers 402 response

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

A JSON object containing the original value in miles per second, the converted value in feet per second, the source and target unit labels, the measurement dimension ('speed'), and the numeric precision used (IEEE-754 double).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "value"
     ],
     "properties": {
      "value": {
       "type": "number",
       "maximum": 1e+100,
       "minimum": 0,
       "description": "Amount in miles per second."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "to": "foot-per-second",
  "from": "mile-per-second",
  "value": 123.45,
  "converted": 651816,
  "dimension": "speed",
  "precision": "IEEE-754 double"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mile-per-second-to-foot-per-second-speed-converter-c80c6e4f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)