--- title: "Is TheirStack legit?" description: "**Canonical URL:** https://jobspipe.dev/answers/is-theirstack-legit" canonical: https://jobspipe.dev/answers/is-theirstack-legit last_updated: 2026-09-18 --- # Is TheirStack legit? > Yes. TheirStack is a real, operating data company, founded in 2021 and based in A Coruna, Spain, with a named founding team on its about page. It publishes its prices, its API documentation, its data sources and the known limits of its coverage, and it offers a free plan, so the product can be tested end to end before any money changes hands. **Canonical URL:** https://jobspipe.dev/answers/is-theirstack-legit **Topic:** Job data vendors and tools (https://jobspipe.dev/alternatives/theirstack) The signs a buyer normally looks for are present. Pricing is self-serve and public rather than hidden behind a sales call. The documentation says the data is collected from publicly available job postings, lists the largest sources by share, and states plainly what the company does not claim, including that it has no independently audited coverage benchmark. Every technology signal can be traced to the job postings that produced it, which makes spot checks possible. Whether it suits you is a separate question from whether it is legitimate, and it turns on fit: whether your target technologies are the kind companies name in job ads, how deep coverage is in your countries, since the docs say depth varies by market, and what the credit metering costs at your volume. That fit question is where an alternative may come in. TheirStack is built for sales and marketing teams who want hiring and technology signals in an interface. JobsPipe is a developer API: POST /v1/jobs/search for normalized postings with filters such as skills_or, company_name_or, max_ghost_score and status, webhooks for new postings, an MCP server, and POST /v1/stack/scan for what a domain serves. It offers no prospecting app, so a sales team without engineering support is usually better served by TheirStack. To evaluate either vendor, use accounts you already know. Search for a few customers or competitors, check that the postings and technologies shown match reality, read the source links, and only then price the volume you need. TheirStack's free plan and the JobsPipe sandbox search endpoint, which needs no key, both allow that check at no cost. ## Related questions ### Who is behind TheirStack? TheirStack's about page says the company was started in 2021 by two founding partners and is based in A Coruna, Spain, with a small team of product engineers. It states that the idea came from treating a job posting as the strongest sign that a company has a problem to solve. The page does not describe outside funding, so check there directly for current details. ### Is it legal to use TheirStack's job posting data? TheirStack says its sources are crawled using publicly available data, and job postings are published by employers in order to be seen. Legality for your use still depends on your jurisdiction, your contract with the vendor and what you do with the data, particularly where personal data is involved. Read the vendor's terms and privacy policy, and ask your own counsel about anything that feeds automated decisions about people. ### How can I verify a data vendor before buying? Test it against ground truth you hold. Pick accounts whose hiring and tools you know, check what the vendor shows for them, and follow the evidence links to the source postings. Then check coverage in your countries, how duplicates and reposts are handled, how credits are consumed, and whether the documentation states its limits. Vendors that publish pricing and offer a free tier make this straightforward. ### Is TheirStack a good fit for developers? It can be. TheirStack has a documented API, webhooks, datasets and an MCP server, and credits are metered per record returned. Its centre of gravity is the sales user, though, so the app, exports and saved searches receive much of the attention. Developers who want raw postings with explicit source filtering at product volume should also compare a jobs API such as JobsPipe on schema and rate. ## More answers - [How accurate is TheirStack?](https://jobspipe.dev/answers/how-accurate-is-theirstack) - [What does TheirStack do?](https://jobspipe.dev/answers/what-does-theirstack-do) - [How does TheirStack work?](https://jobspipe.dev/answers/how-does-theirstack-work) Data behind these answers is published as shares only; every figure can be reproduced against the JobsPipe API (https://jobspipe.dev/jobs-api). --- AI agents: the full machine-readable index of this site is https://jobspipe.dev/llms.txt?src=md-twin - API quickstart, no-key sandbox (POST https://api.jobspipe.dev/v1/sandbox/jobs/search), MCP server, pricing. Free key: https://jobspipe.dev/signup