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TheirStack
A Coruña, Spain
What it is
TheirStack helps sales and marketing teams identify companies that may need what they sell by using job postings as indicators of business needs. Users can search for companies by their use of more than 33,000 technologies or filter job postings for keywords related 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 includes job and company search, company lookup, list enrichment, CSV or Excel exports, and daily or weekly email alerts. API access includes job search, company search, technographics, buying-intent endpoints, webhooks, and an MCP server for AI assistants. Jobs datasets can be delivered in JSON, CSV, or Parquet to cloud storage, Snowflake, or an HTTPS endpoint. TheirStack does not provide personal contact data directly, though it connects to third-party providers and may show hiring-manager information for applicable jobs. A company export is limited to 200 jobs; full job histories are available through the Job Search API, webhooks, or MCP server. Free access includes 50 company credits and 200 API credits monthly. The API plan starts at $49/mo.
For and against
For
- Searches company technology use across 33,000-plus technologies.
- Includes job and company search and list enrichment.
- Supports CSV and Excel exports and email alerts.
- API plans include webhooks and an MCP server.
- Free plan includes monthly company and API credits.
Against
- Does not supply personal contact data directly.
- Company exports are capped at 200 jobs per company.
- States it has not completed a SOC 2 audit.
- Not ISO 27001 certified.
The verdict
TheirStack combines job-posting signals and technology data for company discovery, with web, API, and dataset access. Consider the export cap and stated security status when deciding whether it fits your workflow.
Who it suits
TheirStack suits sales and marketing professionals looking for companies based on hiring activity, technology use, or buying-intent keywords. It also offers API and dataset options for teams integrating job and company data into their workflows.
Plans and prices
Free
5 search-result pages · 25 results per page · 10 workspace invitations
Read 7 Oct 2026 · theirstack.com
API
4 requests per second · 500 results per page · Unlimited pages and team members · Unused credits roll over for 12 months
Read 7 Oct 2026 · theirstack.com
Company credits
Unused credits roll over for 12 months · 200 jobs per company per export
Read 7 Oct 2026 · theirstack.com
Datasets
Jobs, technographics, or buying intents datasets · History, updates, or both
Read 7 Oct 2026 · theirstack.com
On the record
- API, webhooks and MCP
- API plans include job search, company search, technographics and buying-intent endpoints, webhooks, and an MCP server for AI assistants.theirstack.com · read 7 Oct 2026
- App features
- App plans include job and company search, company lookup, list enrichment, CSV or Excel exports, and daily or weekly email alerts.theirstack.com · read 7 Oct 2026
- Buying intent
- Users can define keywords tied to their software’s use cases and filter those keywords across job postings.theirstack.com · read 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.theirstack.com · read 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.theirstack.com · read 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.theirstack.com · read 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.theirstack.com · read 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.theirstack.com · read 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.theirstack.com · read 7 Oct 2026
- Security status
- TheirStack states it has not completed a SOC 2 audit and is not ISO 27001 certified.theirstack.com · read 7 Oct 2026
- Support
- TheirStack asks customers with security questions not answered by its public documents to contact [email protected].theirstack.com · read 7 Oct 2026
- Technology data
- The product lets users search for companies by technology usage across a catalog of more than 33,000 technologies.theirstack.com · read 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.theirstack.com · read 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.theirstack.com · read 7 Oct 2026
