TheirStack
TheirStack is a technographic and hiring signal tool that finds companies by the technologies named in their job postings and the roles they're hiring for, for sales and marketing teams building account lists.
Updated October 2026
Overview: What is TheirStack?
It's free to start with 50 company credits and 200 API credits a month, and API plans start at $49 a month (checked October 2026).
Because it reads job ads rather than website code, TheirStack can see tools that never show up on a company's homepage, such as a data warehouse or an ERP. TheirStack says it tracks 33,000 technologies across 256 million job postings from more than 195 countries. You can also search job text for keywords tied to the problem you solve, such as invoice management, and get alerts on new matches.
Fit: Ideal customer profile.
Teams whose ICP is defined by the software a company runs or the roles it's hiring, especially for backend, data and finance tools that don't appear on a website. It's not a contact database: you still need an enrichment tool for emails and phones, and it sees little at small companies that rarely post jobs.
- Technographic account lists
- Hiring signals for outbound timing
- Job posting data through an API
Capabilities
Key features.
01
Company search by technology, from programming languages to CRMs and ERPs
02
Job search across career sites, applicant tracking systems and job boards
03
Keyword search in job descriptions to find companies with a given problem
04
Daily or weekly email alerts for new matching jobs and companies
05
Filters for job title, salary, location, employee growth, revenue and funding
06
Automatic exclusion of recruiting and consulting firms
07
API with webhooks and an MCP server, plus bulk datasets delivered to S3 or Snowflake
Usage
How to use TheirStack.
Search the app by technology or job keywords, reveal the companies that fit, and export them to CSV or Excel. For automation, the API returns jobs, companies, technographics and buying intents, and webhooks push new jobs and companies to you. Clay has a TheirStack integration for pulling a company's open jobs by domain, and most teams add contacts from a separate enrichment tool before outreach.
Cost
Pricing.
$49/ month
Prices in USD (checked October 2026). App company credits are one-time packs from $109 for 1,000 to $999 for 200,000, or 10% less on a monthly subscription. One API credit returns one job; a company or a technology lookup costs three. Unused paid credits roll over for 12 months, and you can cancel any time.
Free
$0.00
- 50 company credits a month
- 200 API credits a month
- Unlimited team members
API 1.5k
$49.00
- 1,500 API credits a month
- Webhooks and MCP server
- 4 requests per second
API 10k
$169.00
- 10,000 API credits a month
- Plans up to 5M credits for $5,500
- Credits roll over 12 months
Datasets
- Jobs, technographics and buying intents
- Delivered to S3, GCS, Azure or Snowflake
- Quote from sales
At a glance
Quick facts.
- Stack position
- Intent Data
- Category
- Data Sources
- Best for
- Technographic account lists, Hiring signals for outbound timing, Job posting data through an API
- Pricing
- From $49/month
Subcategories
- Hiring Signals
- Technology Lookup
Questions
Frequently asked.
How much does TheirStack cost?
There's a free plan, API plans from $49 a month for 1,500 credits, and one-time packs of app company credits from $109 for 1,000 companies. Bulk datasets are priced by sales (checked October 2026).
How does TheirStack know what technology a company uses?
It reads job postings. When a company asks for experience with a tool in a job ad, TheirStack records that the company uses it, so you can see backend and internal tools a website scan would miss.
Does TheirStack integrate with Clay?
Yes, Clay has a TheirStack integration that pulls a company's current job openings by domain. TheirStack also has an API, webhooks and an MCP server.
What are TheirStack's limits?
It gives you companies and jobs, not people, so you need another tool for contacts. Detection depends on what job ads mention, so companies that hire rarely or through agencies show less. Each export is capped at 200 jobs per company.
What are the alternatives to TheirStack?
BuiltWith and Wappalyzer detect technology from website code, PredictLeads sells hiring, news and technology adoption data, and Apollo pairs basic technographic filters with a contact database.
Compare
TheirStack alternatives.
Talk to us: Pick the tool. We run the system around it.
TheirStack is one part of a stack. We build and run the revenue system it plugs into.
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