# Inkbox AI Correspondence Generator

> Inkbox AI Correspondence Generator is a paid API for AI agents from xinkx402.netlify.app, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-16).

Generates AI-drafted correspondence (emails, letters, messages) based on a stated purpose and optional tone.

## Facts

- Endpoint: POST https://xinkx402.netlify.app/api/correspondence
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/inkbox-ai-correspondence-generator-4d1c2227
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xe0cPdp1K9ivc_b2q2l80

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-correspondence-generator-4d1c2227 -d '<json body>'
```

Example prompt: Can you draft a professional email for me? The purpose is to follow up with a client about an overdue invoice, and I'd like the tone to be firm but polite.

## When to prefer this

Choose this endpoint when you need to quickly generate a written message, email, or letter for a specific purpose with a defined tone, especially in automated workflows where correspondence needs to be created at scale without human drafting time.

## Known failure modes

- Missing required 'purpose' field returns a validation error
- Vague or ambiguous purpose may yield generic or off-target correspondence
- Very long or complex purpose descriptions may result in truncated output
- Invalid tone values may be ignored or cause unexpected formatting
- Service unavailability on the Netlify-hosted endpoint may return 5xx errors

## 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 flag and a data object containing the AI-generated correspondence text tailored to the specified purpose and tone.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "purpose"
 ],
 "properties": {
  "tone": {
   "type": "string"
  },
  "purpose": {
   "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-correspondence-generator-4d1c2227/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)