TheirStack
TheirStack helps sales and marketing professionals identify companies that may need what they sell, using job postings as signals of business needs.
What TheirStack is
TheirStack helps sales and marketing professionals identify companies that may need what they sell, using job postings as signals of business needs. Users can search companies by technology use across a catalog of more than 33,000 technologies, or filter postings by keywords tied to a software’s use cases. Its job postings API covers 250 million jobs across 195 countries since 2021 and searches 362,000 other websites alongside named job boards. The web app offers job and company search, company lookup, list enrichment, CSV or Excel exports, and daily or weekly email alerts. API plans include job search, company search, technographics, buying-intent endpoints, webhooks, and an MCP server for AI assistants. Documented connections include Zapier, Make, N8N, Airtable, and webhook endpoints. TheirStack does not provide personal contact data directly, though it connects to third-party providers and shows hiring-manager information for applicable jobs. Company exports are capped at 200 jobs per company; full job history is available through the Job Search API, webhooks, or MCP server.
Good
- Free plan and free trial are listed.
- Searches technology use across more than 33,000 technologies.
- Offers web and API access.
- Includes exports and email alerts.
- Supports dataset delivery in several formats and destinations.
Watch out
- Company exports are capped at 200 jobs per company.
- Personal contact data is not supplied directly.
- TheirStack has not completed a SOC 2 audit.
- It is not ISO 27001 certified.
Who it suits
TheirStack suits sales and marketing teams seeking companies that may need their products, particularly when job postings or technology use are useful signals. It also offers API and dataset options for teams that need to work with job data programmatically.
Verdict
TheirStack combines job-posting signals with technology and buying-intent searches for company discovery. Review the export cap, contact-data limitations, and security status when assessing fit.
Plans and prices
From TheirStack's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 5 search-result pages · 25 results per page · 10 workspace invitations · 50 company credits and 200 API credits every month |
| API | $49 a month | 4 requests per second · 500 results per page · Unlimited pages and team members · Unused credits roll over for 12 months · 1,500 API credits — $49 per month |
| Company credits | $109, paid once | Unused credits roll over for 12 months · 200 jobs per company per export · 1,000 company credits — $109 one-time |
| Datasets | Priced on request | Jobs, technographics, or buying intents datasets · History, updates, or both · Talk to sales |
The facts
Each one read from TheirStack's own pages, with the date it was checked.
What it does
- API, webhooks and MCP
- API plans include job search, company search, technographics and buying-intent endpoints, webhooks, and an MCP server for AI assistants.checked 7 Oct 2026
- Buying intent
- Users can define keywords tied to their software’s use cases and filter those keywords across job postings.checked 7 Oct 2026
- Contact data limit
- TheirStack says it does not supply personal contact data directly, but connects to third-party providers and shows hiring-manager information for applicable jobs.checked 7 Oct 2026
- Dataset delivery
- Jobs datasets can be delivered as JSON, CSV, or Parquet to S3, GCS, Azure Blob, Snowflake, or an HTTPS endpoint.checked 7 Oct 2026
- Export limit
- A company export is capped at 200 jobs per company; the company’s full job history is available through the Job Search API, webhooks, or MCP server.checked 7 Oct 2026
- Integrations
- TheirStack documents connections with Zapier, Make, N8N, Airtable, and its own webhook endpoints; its contact-finding guide lists Apollo, ContactOut, Instantly, and LinkedIn integrations.checked 7 Oct 2026
- Job data
- Its job postings API page says it covers 250 million jobs across 195 countries since 2021 and searches 362,000 other websites alongside named job boards.checked 7 Oct 2026
- Security controls
- Its DPA commits to TLS 1.2 or higher in transit, encryption at rest, role-based access controls, and regular security monitoring.checked 7 Oct 2026
- Security status
- TheirStack states it has not completed a SOC 2 audit and is not ISO 27001 certified.checked 7 Oct 2026
- Support
- TheirStack asks customers with security questions not answered by its public documents to contact [email protected].checked 7 Oct 2026
- Technology data
- The product lets users search for companies by technology usage across a catalog of more than 33,000 technologies.checked 7 Oct 2026
- What it does
- TheirStack helps sales and marketing professionals find companies that may need what they sell, using job postings as a signal of company needs.checked 7 Oct 2026
- Who it is for
- The company describes its purpose as helping sales and marketing professionals identify companies that need what they sell.checked 7 Oct 2026
Where it runs
- App features
- App plans include job and company search, company lookup, list enrichment, CSV or Excel exports, and daily or weekly email alerts.checked 7 Oct 2026
The company
- Founded
- 2021checked 28 Sep 2026
- Headquarters
- A Coruña, Spainchecked 28 Sep 2026
Alternatives to TheirStack
- 1
Wappalyzer
Free planAndroidiOSWebAPI7.6From $250 a month - 2
Datanyze
Free planWebExtension7.5Free plan - 3
PredictLeads
Free planWebAPIExtensionSelf-hosted7.5From $0.01 a month - 4
BuyerCaddy
Free planWebAPIExtension7.3From $1,000 a month - 5
BuiltWith
Free planWebAPIExtension7.2Free plan - 6
SiteIntelica
Free planWebAPI7.2From €19 a month