# Inkbox Shift Tone

> Inkbox Shift Tone is a paid API for AI agents from inkonbox.netlify.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-13).

Rewrites a given text to match a specified target tone (e.g. professional, casual, persuasive, empathetic)

## Facts

- Endpoint: POST https://inkonbox.netlify.app/api/shift-tone
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/inkbox-shift-tone-3635cf54
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1mp8WPdHVYOPkpbGmIBq_

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-shift-tone-3635cf54 -d '<json body>'
```

Example prompt: Can you rewrite this email to sound more professional? Here it is: 'Hey, just wanted to check if you got my last message — let me know what you think!'

## When to prefer this

Use this endpoint when you need to adjust the emotional register or stylistic tone of existing text without changing its core meaning — ideal for adapting drafts for different audiences, contexts, or brand voices. Choose this over a general rewrite endpoint when tone is the primary variable to change.

## Known failure modes

- Missing required field 'text' returns a validation error
- Missing required field 'target_tone' returns a validation error
- Empty or very short text may produce low-quality results
- Unrecognized or ambiguous target_tone values may produce unexpected output
- Payment failure (insufficient USDC balance) returns 402 Payment Required

## 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.

## 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-shift-tone-3635cf54/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from inkonbox.netlify.app](https://www.zero.xyz/host/inkonbox.netlify.app/llms.txt)