# CRM Test Data Generator with Duplicates | Dedupely

> Generate fictional contacts, companies or deals in HubSpot, Pipedrive or Salesforce import columns, with a chosen share of realistic duplicates. Free CSV download.

- URL: https://dedupe.ly/es/tools/test-data-generator
- Section: tools
- Site index: https://dedupe.ly/llms.txt
- Any page: append `.md` to its URL for this plain-text form

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## Generate CRM test data with duplicates built in

Fictional contacts in your CRM’s import columns with the duplicates you choose.
[Use in Claude](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Dedupely%20Test%20data%20generator&connectorUrl=https%3A%2F%2Fdedupe.ly%2Ftools%2Fmcp)
Generate
Every name and company is invented. Nothing is written to any CRM.
Free up to 2,000 rows a file and 10 runs a day.
[Sign up for Dedupely to go further.](https://v2.app.dedupe.ly/signup)

### Test data that looks like the real mess

A sandbox full of tidy rows proves nothing. Real duplicates hide behind a second email or a reversed name or a missing field. A dedupe that passes on clean test data fails on Monday.
**This tool seeds the duplicates the way people create them and can label the truth for scoring.**

### Then run the real thing on it

Import the file into a test portal. Point a duplicate search at it. Count what was found against the groups you seeded.
**Dedupely finds the seeded duplicates in your sandbox and shows every merge in Merge History.**

### Use it from a script or an AI agent

[Use in Claude](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Dedupely%20Test%20data%20generator&connectorUrl=https%3A%2F%2Fdedupe.ly%2Ftools%2Fmcp)
POST https://dedupe.ly/tools/api/test-data-generator
{ "rows": 500, "duplicateRate": 0.15, "shape": "hubspot", "labelGroups": true }
MCP https://dedupe.ly/tools/mcp (tool: generate_test_data)
Docs https://dedupe.ly/tools/api/openapi.json
[OpenAPI document](https://dedupe.ly/tools/api/openapi.json) ·
[API index](https://dedupe.ly/tools/api) ·
[llms.txt](https://dedupe.ly/llms.txt)

### More free tools

[CSV dedupe](https://dedupe.ly/tools/csv-dedupe)
[Name splitter](https://dedupe.ly/tools/name-splitter)
[Email normalizer](https://dedupe.ly/tools/email-normalizer)
[List merger](https://dedupe.ly/tools/list-merger)
[Domain extractor](https://dedupe.ly/tools/domain-extractor)
[Company normalizer](https://dedupe.ly/tools/company-normalizer)
[Test data generator](https://dedupe.ly/tools/test-data-generator)

### Get started for free

20 free trial merges and as much free support as you need to get your duplicates under control.
[Talk to sales](https://meetings.dedupe.ly/meetings/hampus-isaksson/dedupely-zoom-schedule)[Try for free](https://v2.app.dedupe.ly/signup)
[Or sign up with Google](https://v2.app.dedupe.ly/signup/google)
Running CRM cleanup for clients? [See the Partner Program](https://dedupe.ly/become-a-partner)
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