CompanyStack
Free plan · From ≈ $25/moActively maintained
≈ 1visits/mo
Little sign of use · estimate, read Oct 15, 2026
- For
- People checking UK companies before trading with, lending to, or onboarding them as clients.
- Price
- Free plan · From ≈ $25/mo£19 · pricing page, read Oct 21, 2026
- Activity
- Actively maintainedsite updated 11 days ago
- Runs as
- API
- Used for
- check a company's accounts and owners before trading with it
- watch companies for overdue filings and insolvency notices
- verify directors and controllers for client due diligence
- Has an MCP server (1 in the registry)public registry →
- Publishes llms.txt, a file written for AI assistantscompanystack.co.uk ↗
- Certifications they stateGDPRprivacy policy ↗
- Trust centertheir owntrust center ↗
- Subprocessorspublishedsubprocessor list ↗
- Data processing agreementpublishedDPA ↗
- Privacy policy updated2026-10-12privacy policy ↗
- Security contactsecurity.txt
These are CompanyStack's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
- MCP serveruk.co.companystack/mcpverified in the MCP registry
- Stateanswers, requires sign-inchecked 2026-10-21
- Address to connectapi.companystack.co.uk/mcp
- OpenAPI spec153 pathsthe spec ↗
- API docscompanystack.co.uk/apithe vendor's page ↗
- MCP docscompanystack.co.uk/developers/mcpthe vendor's page ↗
- Status pagelinked from the homepagestatus.companystack.co.uk ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
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Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use CompanyStack for?
Sign in to leave a noteWhat is CompanyStack?
Reads UK Companies House filings into year-by-year accounts figures, owner records, filing deadlines and alerts when a company falls behind. It is listed in the Atlas under Finance.
Who is CompanyStack for?
People checking UK companies before trading with, lending to, or onboarding them as clients.
How much does CompanyStack cost?
CompanyStack has a free plan; paid plans start at ≈ $25/mo (£19/mo), per its pricing page on 2026-10-21.
Is CompanyStack free?
Yes, CompanyStack has a free plan, per its pricing page on 2026-10-21.
Do people use CompanyStack?
Little sign of use: ≈ 1 visits/mo · estimate, 2026-10.
Is CompanyStack still maintained?
Actively maintained: site updated 11 days ago.
Is CompanyStack safe?
We do not audit vendors. What CompanyStack publishes, read 2026-10-21: GDPR stated on its privacy policy.
How do I cancel CompanyStack?
In its own words (terms of service, 2026-10-21): “11.2 You can cancel a paid plan at any time on your billing page.”
What are alternatives to CompanyStack?
In Finance, by use: Shufti, SEC EDGAR Filing Software + MCP Server & Alerts, Zyphe, International company and director search, Era, X1 Wealth.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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