# Research Duplicate-value Remover

> Research Duplicate-value Remover is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Removes duplicate string values from an array while preserving the original order, optimized for research workflows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/unique-values-research?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/research-duplicate-value-remover-a357a6c7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3FYGGCNRTZVNMescAydma

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 research-duplicate-value-remover-a357a6c7 -d '<json body>'
```

Example prompt: Can you remove the duplicates from this list of research tags — ["machine learning", "AI", "machine learning", "deep learning", "AI", "NLP"] — and keep them in the original order?

## When to prefer this

Choose this endpoint when you need a fast, low-cost ($0.01 USDC) way to remove duplicate string values from a list while maintaining insertion order — particularly in research data pipelines where preserving the sequence of first appearances matters. It is purpose-built for research workflows and handles string arrays directly without requiring custom code.

## Known failure modes

- Empty array input returns an empty array
- Non-string items in array may be rejected or coerced
- Very large arrays may time out or hit payload limits
- Missing 'values' field returns a validation error

## How this service works

Research Duplicate-value remover: Remove duplicate values from an array while preserving order. Tailored for research workflows.

## Output

Returns a deduplicated array of strings containing only the first occurrence of each value in the original input order, with all subsequent duplicates removed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "default": [
    "red",
    "blue",
    "red"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/research-duplicate-value-remover-a357a6c7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)