# Wolfram Alpha Spoken Result

> Wolfram Alpha Spoken Result is a paid API for AI agents from Wolfram|Alpha at wolframalpha.mpp.paywithlocus.com, paid per call via MPP, $0.055/call, status unknown (last checked 2026-10-11).

Returns a natural language, speech-friendly answer to a knowledge or computation query using Wolfram|Alpha

## Facts

- Endpoint: POST https://wolframalpha.mpp.paywithlocus.com/wolframalpha/spoken?utm_source=zero.xyz
- Price: $0.055/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Provider: Wolfram|Alpha
- Docs: https://products.wolframalpha.com/api
- Website: https://www.wolframalpha.com
- Tags: computation, math, science, knowledge-engine, data
- Canonical page: https://www.zero.xyz/c/wolfram-alpha-spoken-66d5d408
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IB34XvsT2VJcCkL-_Zx03

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 wolfram-alpha-spoken-66d5d408 -d '<json body>'
```

Example prompt: Ask Wolfram Alpha what the speed of light is in kilometers per second and give me the answer as a natural spoken sentence using metric units.

## When to prefer this

Choose this endpoint when you need a clean, voice-friendly, single-sentence answer from Wolfram Alpha — ideal for text-to-speech pipelines, voice assistants, or any context where a concise spoken-style response is preferred over structured data, images, or LLM-formatted output. Prefer over 'Short Answer' when you want a more grammatically complete spoken sentence, and over 'Full Results' when you don't need rich structured data.

## Known failure modes

- Query too ambiguous or unanswerable — Wolfram Alpha may return no result
- Timeout exceeded (default 5 seconds) — increase the timeout parameter for complex computations
- Unsupported query type — some highly open-ended or subjective questions yield no spoken result
- Network or service unavailability — transient 5xx errors

## How this service works

Get an answer phrased as a full sentence — optimized for text-to-speech and conversational AI. Returns natural language text.

## Output

A single plain-English sentence suitable for text-to-speech or voice interfaces, e.g. 'The capital city of France is Paris, Île-de-France, France'. Returned as a JSON object with a `text` field and a `success` boolean.

## Example request

```json
{
 "i": "What is the capital of France?",
 "units": "metric",
 "timeout": 5
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "i"
 ],
 "properties": {
  "i": {
   "type": "string",
   "description": "Natural language query"
  },
  "units": {
   "type": "string",
   "description": "\"metric\" or \"imperial\""
  },
  "timeout": {
   "type": "number",
   "description": "Max seconds to process (default 5)"
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wolfram-alpha-spoken-66d5d408/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wolframalpha.mpp.paywithlocus.com](https://www.zero.xyz/host/wolframalpha.mpp.paywithlocus.com/llms.txt)