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TheirStack
What TheirStack is
TheirStack helps sales and marketing professionals identify companies that may need what they sell, using job postings as indicators of company needs. Users can search by technology use across a catalog of more than 33,000 technologies or filter job postings with keywords tied to software use cases. The 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, exports, and email alerts. API plans add search, technographics, and buying-intent endpoints, webhooks, and an MCP server for AI assistants. The service documents connections with 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 histories are available through the Job Search API, webhooks, or MCP server. The API plan costs $49 a month; a free plan is also listed.
Who it suits
TheirStack suits sales and marketing teams seeking companies based on hiring activity, technology use, or buying-intent keywords. Its API, web app, and dataset delivery options also address teams that need to search, export, or route job data.
What it does well
- Searches across more than 33,000 technologies.
- Free plan includes monthly company and API credits.
- API includes webhooks and an MCP server.
- Datasets can be delivered in several formats and destinations.
What to know first
- Company exports are capped at 200 jobs per company.
- It does not supply personal contact data directly.
- SOC 2 audit is incomplete and ISO 27001 certification is absent.
Limits
The free plan provides 50 company credits and 200 API credits each month, with five search-result pages, 25 results per page, and 10 workspace invitations. The $49 per month API plan includes 1,500 API credits and a limit of four requests per second. Company exports are capped at 200 jobs per company.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 50 company credits and 200 API credits every month · 5 search-result pages · 25 results per page · 10 workspace invitations | Free |
| Company credits | 1,000 company credits — $109 one-time · Unused credits roll over for 12 months · 200 jobs per company per export | $109, paid once |
| API | 1,500 API credits — $49 per month · 4 requests per second · 500 results per page · Unlimited pages and team members · Unused credits roll over for 12 months | $49 a month |
| Datasets | Talk to sales · Jobs, technographics, or buying intents datasets · History, updates, or both | On request |
As theirstack.com lists them, read 7 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://theirstack.com/.
- Start with the free plan, which provides monthly company and API credits.
- Use the web app for job and company search, lookup, enrichment, exports, and alerts.
- Choose the API plan for API access, webhooks, and MCP, or contact sales about datasets.
- Connect using documented options such as Zapier, Make, N8N, Airtable, or webhook endpoints.
Verdict
TheirStack offers job-posting and technology signals for company discovery through both an app and API. Buyers should account for the export cap, third-party contact-data connections, and the stated security certification status.
Questions
Does TheirStack have a free plan?
Yes. The free plan provides 50 company credits and 200 API credits each month.
How much does TheirStack cost?
The API plan is $49/mo. The Company credits plan is $109.00 USD one-time for 1,000 company credits; dataset pricing is available through sales.
Which platforms does it support?
TheirStack is available on the web and through an API.
Does TheirStack provide personal contact data?
It does not supply personal contact data directly. It connects to third-party providers and shows hiring-manager information for applicable jobs.
Which integrations are documented?
TheirStack documents Zapier, Make, N8N, Airtable, and its webhook endpoints. Its contact-finding guide also lists Apollo, ContactOut, Instantly, and LinkedIn.
Can it provide a company’s full job history in an export?
A company export is capped at 200 jobs per company. Full job history is available through the Job Search API, webhooks, or MCP server.
Facts from TheirStack's own pages
- 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, 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, 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, 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, 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, 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, 7 Oct 2026
- Founded
- 2021 · theirstack.com, 28 Sept 2026
- Headquarters
- A Coruña, Spain · theirstack.com, 28 Sept 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, 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, 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, 7 Oct 2026
- Security status
- TheirStack states it has not completed a SOC 2 audit and is not ISO 27001 certified. · theirstack.com, 7 Oct 2026
- Support
- TheirStack asks customers with security questions not answered by its public documents to contact [email protected]. · theirstack.com, 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, 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, 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, 7 Oct 2026
Where TheirStack stands on Freedom251
- Account Enrichment Software#16 of 32
- Technographic Data Software#19 of 30