TheirStack
Tech-stack-driven company discovery and tech-filtered job search. Key gotcha: keyword slugs are kebab-case (validate first), and there is no email-provider filter.
Reach for TheirStack when you need technology-driven company discovery, job postings filtered by tech stack or keyword slug, or to enrich a known company's tech stack. For open-roles / who-is-hiring questions with no tech filter, even ones narrowed by recency, excluded titles, "posted by a recruiting agency" or what the description says, use the hyreflow Native job scrapes instead. It has no people/contact data, route person/contact enrichment to AiArk, Prospeo, or Lusha instead.
Managed credits or BYOK: catalog lookups are free; company search and technographics bill 2.7 credits per result, job search bills 0.9 credits per result. A preview quotes the full limit; the charge counts the records returned. A blur_company_data: true company search is a free preview. Credit balance reads your own TheirStack account and needs your own key.
Capabilities
| Tool | Does | Cost |
|---|---|---|
theirstack_catalog_keywords | Look up the correct kebab-case keyword slug | Free |
theirstack_catalog_industries | Industry codes with counts | Free |
theirstack_search_companies | Tech-stack company discovery (company_technology_slug_or/_and) | 2.7 cr / company |
theirstack_search_jobs | Tech-stack / keyword-slug job search (needs a time or company filter) | 0.9 cr / job |
theirstack_company_technographics | Technologies a single known company uses | 2.7 cr / company |
theirstack_credit_balance | Remaining credits on your own account | BYOK only |
Guidance
- Validate slugs first (free): run
theirstack_catalog_keywordsto find the exact kebab-case slug (react,node-js,salesforce) before any paid search, display names return no results. - Field names differ by endpoint: company search / company-level job filters use
company_technology_slug_*; job-text filters usejob_technology_slug_*; technographics useskeyword_slug_or. Don't reuse one in another. - No email-provider filter: never pass
company_email_provider/mx_provider. Use Prospeo for MX filtering, or post-filter technographicsemail_tech.mx_provider. - Job search needs a filter: always provide
posted_at_max_age_daysor a company filter or the API errors. - Use
_andfor precision,_orfor reach; keeplimitsmall (e.g. 10) on company search, it's the expensive one. - Country codes are ISO 2-letter (
US,GB,DE).
hyreflow tools execute theirstack search_companies \
--payload '{"company_technology_slug_or":["salesforce","react"],"limit":10}'Pair TheirStack discovery (company + tech-filtered job search) with a people/contact provider for enrichment, it has no person data of its own.