# Firstbase > Firstbase is an all-in-one startup operating system that helps founders form, run, and grow a US business from anywhere. It covers incorporation, ongoing compliance and registered-agent services, bookkeeping, invoicing, tax filing, and a virtual business address. Firstbase advertises an embedded "Incorporation API" for platforms, but publishes no public developer documentation or OpenAPI specification for it. This llms.txt was generated by the API Evangelist enrichment pipeline from the Firstbase public web surface (method: generated). No provider-published /llms.txt exists (HTTP 404). ## Products - [Firstbase Start](https://www.firstbase.io/start): US company formation (LLC / C-Corp). - [Firstbase Agent](https://www.firstbase.io/agent): Compliance and registered-agent management. - [Firstbase Accounting](https://www.firstbase.io/accounting): Bookkeeping, invoicing, and tax-ready financials. - [Firstbase Mailroom](https://www.firstbase.io/mailroom): Virtual business address and mail handling. ## Docs - [Help Center](https://help.firstbase.io/hc): Support articles and how-tos. - [Founder's Guide](https://www.firstbase.io/guide): Getting-started guidance for launching a US company. - [Blog](https://www.firstbase.io/blog): Company and product announcements, incorporation guides. - [Pricing](https://www.firstbase.io/pricing): Plan and pricing details. ## Applications - [Sign Up / Onboarding](https://onboarding.firstbase.io/): Start a new Firstbase account. - [Application Login](https://app.firstbase.io/): Firstbase customer dashboard. - [Status Page](https://status.firstbase.io/): Live service status. ## Legal - [Terms of Use](https://www.firstbase.io/terms) - [Privacy Policy](https://www.firstbase.io/privacy-policy)