Formation is a few API calls away
A clean REST API, official SDKs, a full sandbox, and signed webhooks let you build entity formation, registered agent, and compliance right into your product. Skip standing up a fifty-state filing operation and ship the feature in an afternoon.
Formation looks like a feature. Then you scope it
Adding entity formation to your product sounds like a weekend project until you list what it needs: an integration with every secretary of state, a registered agent in fifty states, retries when a filing bounces, deadline tracking per entity, and a support path when a state kicks something back. That is an operations company, and it competes for the roadmap you would rather ship.
The API gives you all of it behind a handful of endpoints. You call create, subscribe to a webhook, and File.Business runs the filing, the agent network, and the compliance tracking underneath your product.
- An integration per secretary of state
- A fifty-state agent network to run
- Retry and reconciliation logic
- Deadline tracking per entity
- Months off your own roadmap
- One endpoint to form an entity
- The agent network already there
- Idempotency and retries built in
- Compliance events by webhook
- Your team stays on your product
Form an entity, in the SDK you already use
The same call in every official SDK. Switch languages to see it in yours.
One call forms the entity, sets the registered agent, and returns an id you track by webhook. Run it against the sandbox with test keys, no state fees.
Everything you need to build on it, in one place
A real developer platform, not a form with an endpoint bolted on.
REST API
JSON over HTTPS, predictable
Official SDKs
Node, Python, Ruby, Go
Sandbox
Test without state fees
Webhooks
Signed, retried, idempotent
Idempotency
No duplicate filings on retry
OpenAPI docs
Generated clients and reference
Agent network
Fifty states behind one call
White-label option
If you would rather not build UI
From sandbox key to filing in production
Five steps, in the right order. Select one to see the detail.
Generate sandbox keys
Sign up and issue sandbox keys in a click. The sandbox mirrors production, so everything you build against it works the same when you switch to live.
Keys in a click, no fees.Install the SDK
Add the SDK for your stack, drop in your key, and you have a typed client with retries and pagination handled. Or call the REST API directly from anything that speaks JSON.
One install, a typed client.Call create
One call forms the entity, sets the registered agent, and returns an id and a status. Pass an idempotency key so a retry never doubles a filing.
Create the entity in a few lines. API reference.Handle webhooks
Subscribe to events like filing.completed and compliance.due, verify the signature, and update your app. Events are retried with backoff and carry an id for idempotent handling.
Signed events, retried, idempotent.Swap to live keys and go
When it works in sandbox, switch to live keys and your same code files real entities. Version pinning means future changes never break the integration you shipped.
Same code, live filings. Read the docs.Built as a platform, not a form with a hook
Most options make you build the reliability yourself. Here is the difference.
| Capability | File.Business | Build in-house | Scrape state portals | Basic filer API |
|---|---|---|---|---|
| Official typed SDKs | No | No | Some | |
| Sandbox without state fees | No | No | Varies | |
| Signed, retried webhooks | You build it | No | Basic | |
| Idempotency on writes | You build it | No | No | |
| Fifty-state agent behind one call | No | No | Add-on | |
| Transparent, published pricing | Internal cost | Fragile | Per call |
The honest version. This is infrastructure, not legal advice, and complex structures still involve your customers' own counsel. What File.Business provides is a reliable formation, registered agent, and compliance API so you build the feature instead of the plumbing. Compare on the comparison hub.
An operator who knows the integration playbook
Ask in plain English. BosAI knows the endpoints, the events, and the reliability model.
If my create call times out and I retry, do I get two LLCs?
How do I know when a filing actually clears the state?
Will an API change break what I ship today?
A feature we scoped in quarters, shipped in days
We priced out building formation ourselves and it was a fifty-state integration plus an agent network plus a filing support team, easily a quarter of roadmap. We integrated the File.Business API in a sprint instead. The idempotency and signed webhooks meant we could trust it against real filings, and version pinning means it will not break under us. Our users form entities inside our app and never know there is anything behind it.
Representative composite based on developer outcomes. Nothing here is legal or tax advice; consult your professionals for your situation.
The docs, the SDKs, and the sandbox
Practical resources for building on the platform. All free to read.
Straight answers on SDKs, webhooks, and reliability
What can I build with the API?
Which SDKs do you offer?
Is there a sandbox?
How do webhooks work?
How do you handle idempotency and retries?
How is the API versioned?
How do you keep it secure?
How do I get access?
Build formation in an afternoon
Generate sandbox keys, install the SDK for your stack, and form your first entity today. Read the docs, or talk with our team about production and volume.