# PennyRail Text Lines Deduplicator

> PennyRail Text Lines Deduplicator is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Removes duplicate lines from a multi-line text string, returning only unique lines

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/nano/text.lines-dedupe--deduplicate-lines
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-text-lines-deduplicator-dc9befce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k8ChgIRspD6uaBwWVsXVo

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 pennyrail-text-lines-deduplicator-dc9befce -d '<json body>'
```

Example prompt: Can you deduplicate the lines in this text and give me back only the unique ones? Here's the text: 'apple
banana
apple
cherry
banana
orange'

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call microservice to deduplicate lines in a text string without setting up any local processing. Ideal for agents that handle text cleanup tasks on-the-fly and want to offload string deduplication as a composable step in a pipeline, especially when already using the PennyRail/x402 payment infrastructure.

## Known failure modes

- Missing 'input' field returns a validation error
- Empty string input may return an empty result or error
- Extremely large inputs may time out or be rejected
- Non-string input type may cause a schema validation failure
- Payment failure (402) if USDC balance is insufficient or x402 header is missing

## How this service works

Machine-readable settlement service

## Output

A text response containing the original input lines with all duplicates removed, preserving only unique lines (order may be preserved or sorted depending on implementation). The response is a JSON object with the deduplicated text.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-text-lines-deduplicator-dc9befce/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)