You can access the Dataset Merge and JavaScript Deduplication programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

1from apify_client import ApifyClient
2
3# Initialize the ApifyClient with your Apify API token
4# Replace '<YOUR_API_TOKEN>' with your token.
5client = ApifyClient("<YOUR_API_TOKEN>")
6
7# Prepare the Actor input
8run_input = {
9    "datasetIds": [
10        "peerless_columbine~dataset-merge-js-example-posts",
11        "peerless_columbine~dataset-merge-js-example-posts",
12    ],
13    "fields": ["postId"],
14    "preDedupTransformFunction": "async (items, context) => items",
15    "postDedupTransformFunction": "async (items, context) => items",
16}
17
18# Run the Actor and wait for it to finish
19run = client.actor("peerless_columbine/dataset-merge-js").call(run_input=run_input)
20
21# Fetch and print Actor results from the run's dataset (if there are any)
22print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
23for item in client.dataset(run.default_dataset_id).iterate_items():
24    print(item)
25
26# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

Apify Dataset Merge & Deduplicate | JavaScript API in Python

The Apify API client for Python is the official library that allows you to use Dataset Merge and JavaScript Deduplication API in Python, providing convenience functions and automatic retries on errors.

Install the apify-client

$pip install apify-client

Other API clients include:

Dataset Merge and JavaScript Deduplication API in JavaScript

Dataset Merge and JavaScript Deduplication API through CLI

Dataset Merge and JavaScript Deduplication OpenAPI definition

Dataset Merge and JavaScript Deduplication API

Dataset Filter & Transform

nerolabs/dataset-filter-transform

Returns rows of any Apify dataset, CSV/Excel/JSON file URL or Google Sheet that pass filter rules (25 operators, AND/OR, date ranges that fix a scraper's ignored date filter) after transforms (rename, cast, compute, regex), then sort, dedupe, export, webhook. Agent-ready: pay per event (x402, MCP).

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Merge, Dedup & Transform Datasets - Limited permissions

lukaskrivka/dedup-datasets-limited-permissions

Limited permission version of the popular Actor. The ultimate dataset processor. Extremely fast merging, deduplications & transformations all in a single run.

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Dataset Join & Merge (VLOOKUP for Datasets)

nerolabs/dataset-join-merge

Returns two Apify datasets, files or Google Sheets by URL, or JSON arrays joined on key fields like SQL or VLOOKUP: left, inner, right, full and anti joins plus union, with CSV/Excel export, named-dataset append and webhook delivery. Agent-ready: pay per event (x402, MCP), per output row.

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Merge Datasets & Remove Duplicates — Deduplicate, Filter, Excel

tidydata/merge-dedupe-datasets

Merge datasets and remove duplicates in one call: combine Apify datasets, CSV, Excel, JSON or Google Sheets, dedupe by any field (smart URL/email/phone matching), filter, sort, keep only new rows, export CSV/Excel/JSON. Works from AI agents via Apify MCP (Claude, ChatGPT), n8n and the API.

tidydata

Dataset Aggregate, Group By & Pivot

nerolabs/dataset-aggregate-pivot

Returns GROUP BY and pivot tables for any Apify dataset, file or Google Sheet by URL, or JSON array: count, sum, average, min, max, median per group, date buckets, pivot columns. Exports CSV/Excel, appends to a named dataset, posts to a webhook. Agent-ready: pay per event (x402, MCP), per input row.

Adam Pearce

Eventbrite Scraper | Events & Organizer Leads

peerless_columbine/eventbrite-events-organizers-scraper

Eventbrite scraper API for events and organizer leads. Search by city, keyword, category, date or URL. Get ticket prices, venues and optional organizer websites/socials. Export CSV, JSON, Excel or ICS. Batch cities; skip delivered events. Standard-run usage included. Independent tool; see Pricing.

tingyou333 zhuang

CSV & Excel Dataset Merger / Splitter [Bulk Optimizer]

thecfmarketing/csv-xlsx-dataset-merger-pattern-splitter

High-speed tool to merge multiple CSV & Excel files or split large datasets into smaller chunks by rows, file size, or specific patterns. Clean duplicates, optimize data formats, and structure columns. The ultimate utility for handling millions of B2B cold email leads and data lists.