# CSV Duplicate Rows

> CSV Duplicate Rows is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Finds and counts duplicate normalized rows in a CSV text payload, returning structured deduplication results as versioned deterministic JSON.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/csv-duplicate-rows
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/csv-duplicate-rows-116ba43e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w_jNDjtW8I28eKE3bS-dt

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 csv-duplicate-rows-116ba43e -d '<json body>'
```

Example prompt: Can you check this CSV text for duplicate rows and tell me which rows are repeated and how many times? Here's the data: 'name,age\nAlice,30\nBob,25\nAlice,30\nCarol,22\nBob,25'

## When to prefer this

Use this endpoint when you need a fast, deterministic, in-memory duplicate-row check on bounded CSV text before passing data to downstream tools with strict uniqueness contracts. Ideal for pre-validation in ETL pipelines, data import guards, and audit workflows where no external data store or large-scale processing is needed.

## Known failure modes

- Text payload exceeds 8192 character limit, resulting in rejection
- Malformed or non-CSV text input causing parsing errors
- Empty text input returning no findings
- Non-tabular text causing ambiguous row detection

## How this service works

CSV Duplicate Rows: CSV Duplicate Rows finds duplicate normalized rows in bounded CSV text from bounded caller-supplied values without an external provider. Call CSV Duplicate Rows before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for CSV Duplicate Rows as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. Fir…

## Output

Returns versioned deterministic JSON containing identified duplicate rows, their normalized values, occurrence counts, and a structured result contract indicating how many rows were duplicated and what they contained.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 8192,
   "description": "Text supplied to CSV Duplicate Rows; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "unique": false,
   "duplicate_rows": [
    3
   ]
  },
  "schema": "delx/util-csv-duplicate-rows/v1",
  "status": "advisory",
  "evidence": {
   "retained": false,
   "input_sha256": "c399dc1bd240bdbc8a7548ed2a7ecb60cb01c85a8a9aaac086fbc37bae868dad",
   "external_calls": 0
  },
  "operation": "data_batch:csv_duplicate_rows"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/csv-duplicate-rows-116ba43e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)