---
title: "Companystack (@companystack)"
description: "Companystack: API listing imported from its public OpenAPI spec."
account: "companystack"
---

# Companystack

Companystack: API listing imported from its public OpenAPI spec.

## APIs

1 public API with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/companystack/feed.md

- [CompanyStack API](https://skmtc.dev/companystack/apis/companystack-api.md): UK company data: filed accounts, KYB checks, new-company alerts, officers and ownership