# Inkbox AI Content Studio — Shift Tone

> Inkbox AI Content Studio — Shift Tone is a paid API for AI agents from xinkx402.netlify.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-14).

Rewrites a piece of text to match a specified target tone (e.g. formal, casual, playful, empathetic) while preserving the original meaning.

## Facts

- Endpoint: POST https://xinkx402.netlify.app/api/shift-tone
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/inkbox-ai-content-studio-shift-tone-eeae7f4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jMXGt_rj0egDwefkB0JS9

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 inkbox-ai-content-studio-shift-tone-eeae7f4a -d '<json body>'
```

Example prompt: Can you rewrite this paragraph in a warmer, more empathetic tone? Here's the text: 'We are unable to process your refund request at this time due to policy constraints.'

## When to prefer this

Choose this endpoint when you need to systematically adapt the voice or register of existing written content to a new audience or context — e.g. converting formal copy to casual, or making blunt text more empathetic — without changing the underlying facts or message. It is purpose-built for tone transformation as a single, atomic operation, making it more predictable and cheaper than asking a general-purpose LLM to rewrite content as part of a longer prompt chain. Best suited for short-to-medium passages where preserving meaning while changing delivery is the primary goal.

## Known failure modes

- Missing required 'text' field returns a 400 validation error
- Missing required 'target_tone' field returns a 400 validation error
- Unrecognized or unsupported tone values may produce generic rewrites or errors
- Very long input texts may be truncated or cause timeouts
- Payment of 0.2 USDC on Base must be completed before the response is returned; failed payment returns 402
- Ambiguous or contradictory tone descriptors may produce inconsistent output quality

## How this service works

Draft, rewrite, translate, and optimize written content. 25 AI-powered endpoints. Pay-per-call with USDC on Base.

## Output

Returns a JSON object with a success boolean and a data object containing the tone-shifted version of the input text, rewritten to match the specified target tone while preserving the original meaning and key information.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text",
  "target_tone"
 ],
 "properties": {
  "text": {
   "type": "string"
  },
  "target_tone": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/inkbox-ai-content-studio-shift-tone-eeae7f4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xinkx402.netlify.app](https://www.zero.xyz/host/xinkx402.netlify.app/llms.txt)