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Find companies by the data they holdNew

Find the companies sitting on the kind of internal data you need, such as support tickets, sales records or product analytics, from the software that produces it.

Who it's for: A company that sources internal data from other businesses, whether to train AI models or to build data products.

Try it freeSee integrations

Specific scenarios

  • Find companies with data to train AI modelsNew

    Find the companies whose internal data, such as support tickets, sales records or product analytics, could train or fine-tune your AI models, and offer them a data partnership.

    SignalsCategory adoption
    FAQs (3)
    How do I find companies whose data could train AI models?

    In TheirStack, search companies that use the tools holding the text and records your models need, such as help desks for support conversations, CRMs for sales notes, or wikis like Confluence and Notion for internal documentation. Narrow by country, employee count and company type to keep the businesses you can sign a data partnership with. How to build lead lists with technographic data

    Which software points to the most useful AI training data?

    Tools that store a lot of text written by people usually point to the most useful training data: help desks such as Zendesk and Intercom, wikis such as Confluence and Notion, and CRMs such as Salesforce. In TheirStack, each technology a company uses comes with a confidence level, so keep medium and high confidence for a list with few false positives. How we source tech stack data

    How do I size a market of data partners before I start outreach?

    TheirStack shows how many companies match a search for free, so you can compare tools, countries and company sizes before revealing any company. Credits are only spent when you reveal or export a company in the app, or when the API returns one. Credits

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  • Find companies whose data you can licenseNew

    Find the companies whose internal data, such as transactions, pricing or usage records, you could license and package into a dataset, feed or benchmark you sell.

    SignalsCategory adoption
    FAQs (3)
    How do I find companies whose data I can license for a data product?

    In TheirStack, search companies by the system that records the data your product needs, such as a billing, point of sale or analytics tool, and narrow by country, industry and employee count. Each company comes with its domain and industry, so you can match it to the market your dataset covers before you reach out. How to build lead lists with technographic data

    Which companies are worth approaching for a data licensing deal?

    The companies worth approaching record the data your product needs at scale, so look for the tool that captures it and a company size that gives you enough records. In TheirStack, keep medium and high confidence on that technology to leave out companies that only mention it in passing. How we source tech stack data

    Can I get new companies as soon as they start using a tool?

    Yes, a TheirStack webhook sends you every new company that matches your search as soon as we find it, so new data suppliers reach you without running the search again. Each company sent costs 3 API credits, the same as when the API returns it. Webhooks

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Learn how

Find companies by the data they hold: integrations with AI assistants, automations and CRMs

TheirStack works with the AI assistants, automation tools and CRMs you already use: ask Claude or ChatGPT through the MCP server, send new matches to Clay, n8n, Make or Zapier by webhook, and create leads in Salesforce or HubSpot.

  • AI assistants

    Ask Claude, ChatGPT, Cursor or any MCP client to search jobs, companies and tech stacks through the TheirStack MCP server.

    MCP server

    https://api.theirstack.com/mcp
    Read the MCP docs

  • Automations

    TheirStack sends every new matching company by webhook as soon as it finds it, to your automation platform or through it into your CRM and sales tools.

    Automation platforms

    CRMs and sales tools

    Run this use case from your own code
    curl -X POST https://api.theirstack.com/v1/companies/search \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "company_technology_slug_or": ["zendesk","intercom","freshdesk","salesforce","hubspot","amplitude","mixpanel"],
    "company_country_code_or": ["US"],
    "min_employee_count": 25,
    "max_employee_count": 500,
    "company_type": "direct_employer",
    "property_exists_and": ["domain"]
  }'
    Read the API docsRead the webhooks docs

Frequently asked questions

The data you need already lives in their software.

Find the companies whose tools hold the data you want, in your market and at the size you work with.

Find them free