# Creator Desk Prefix Lines Utility

> Creator Desk Prefix Lines Utility is a paid API for AI agents from creator-desk-x402-isolated.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Prepends a prefix string to every line of a given text value, returning the transformed multi-line result.

## Facts

- Endpoint: POST https://creator-desk-x402-isolated.onrender.com/v1/utility/prefix-lines?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/creator-desk-prefix-lines-utility-8684b621
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eufUrHoGwhq8VsWh1PyEZ

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 creator-desk-prefix-lines-utility-8684b621 -d '<json body>'
```

Example prompt: Take this block of text and add '> ' to the beginning of every single line so it looks like a quoted block: 'Hello world
This is a test
Third line here'.

## When to prefer this

Choose this endpoint when you need a simple, reliable, pay-per-use utility to prepend a fixed prefix string to every line of a text block — especially in an autonomous agent pipeline where you want a deterministic, stateless text transformation without setting up your own string-processing logic. It is well-suited for formatting tasks like quoting, commenting, tagging, or annotating multiline text.

## Known failure modes

- Missing or empty 'value' field returns an error or empty result
- Non-string value input may cause unexpected behavior or rejection
- Malformed options object may be ignored or cause a 400 error
- Payment failure via x402 results in a 402 response before processing begins
- Network timeout on the Render-hosted service under cold-start conditions

## How this service works

Machine-callable x402-paid utilities for autonomous agents.

## Output

Returns a JSON object with a 'result' field containing the full transformed text (all lines prefixed) and an 'operation' field confirming 'prefix_lines'.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "value": {},
  "options": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "example",
  "operation": "prefix_lines"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/creator-desk-prefix-lines-utility-8684b621/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from creator-desk-x402-isolated.onrender.com](https://www.zero.xyz/host/creator-desk-x402-isolated.onrender.com/llms.txt)