CSV Join Guard — Duplicate Keys & Join Row Estimates
Pricing
$0.25 / completed join check
Predict CSV join row counts before merging data. Detect duplicate keys, many-to-many expansion, unmatched rows and empty keys. Composite keys supported. JSON, CSV and HTML reports. $0.25 per completed check; fixed demo free.
You can access the CSV Join Guard — Duplicate Keys & Join Row Estimates 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.
![CSV & Excel Dataset Merger / Splitter [Bulk Optimizer] avatar](https://images.apifyusercontent.com/AT5VsgcnAJ5JzMbf0ycrAjKUBNVQf2Tc7M5-U5gOGxA/rs:fill:76:76/cb:1/aHR0cHM6Ly9hcGlmeS1pbWFnZS11cGxvYWRzLXByb2QuczMudXMtZWFzdC0xLmFtYXpvbmF3cy5jb20vQ0UzdXRQY05XdzNMYjAyS3AtYWN0b3ItZGpsR2M0bEZYeFRJWVY0Q3YtSVJHcG93MnNCSC1hY3Rvcl9pY29uLmpwZw.webp){kind=avatar}
{ "mcpServers": { "apify": { "type": "http", "url": "https://mcp.apify.com/?tools=fetch-actor-details,brandgard/csv-join-guard" } }}The configuration above connects to the hosted Apify MCP server with the CSV Join Guard — Duplicate Keys & Join Row Estimates Actor already loaded. It uses OAuth, so your client opens a browser window to sign you in to Apify on first use. No API token is needed. Clients without OAuth support can authenticate with an Authorization: Bearer header carrying an API token from API & Integrations in Apify Console.
Get a ready-to-use configuration for your MCP client with the CSV Join Guard — Duplicate Keys & Join Row Estimates Actor preconfigured at https://mcp.apify.com/?tools=fetch-actor-details,brandgard/csv-join-guard.
You can connect to the Apify MCP Server using clients like Tester MCP Client, or any other MCP client of your choice.
If you want to learn more about our Apify MCP implementation, check out our MCP documentation. To learn more about the Model Context Protocol in general, refer to the official MCP documentation or read our blog post.