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Auto.Complete adds a business typeahead to your own product. As an applicant types their company name, they see matching businesses from official Secretary of State records and pick theirs from the list — no typos, no guessing, and no wrong-entity matches when you run KYB. For setup, code samples and a live demo, go to sdk.baselayer.com. This page explains how the product works so you know what you’re building.

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How Auto.Complete Works

Auto.Complete is built so your API key never reaches the browser:
  1. Your backend opens a session. It calls POST /autocomplete/sessions with your API key and receives a short-lived session token.
  2. The browser asks for suggestions. As the applicant types, your page calls GET /autocomplete/businesses with that session token and shows the suggestions it returns.
  3. The applicant picks their business. Each suggestion carries a token that identifies exactly that business.
  4. You run KYB on the pick. Pass the token as business_token on POST /searches, and the search runs against the business the applicant chose.
The business_token is valid for 15 minutes and only for your organization. Sessions are short-lived and the SDK refreshes them for you.

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What Each Suggestion Includes

  • The business’s name, and the DBA or other name that matched what was typed
  • Its home (domicile) state and the other states it is registered in
  • Its business structure (for example LLC, C_CORPORATION, SOLE_PROPRIETORSHIP)
  • Related people and addresses, so applicants can recognise the right business
You can narrow suggestions by state, home state, business structure, officer or registered agent name, and address.

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Use the SDK

The fastest way to integrate is the Baselayer JavaScript/TypeScript SDK, @baselayer-sdk/autocomplete. It:
  • Opens and refreshes sessions for you, and retries when a session lapses or a rate limit is hit
  • Includes a ready-made, fully restyleable React component
  • Includes a server helper so your API key stays on your backend
See sdk.baselayer.com for installation, examples and the full request reference.

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Getting Access

Auto.Complete is enabled per organization. Contact your Baselayer representative to turn it on or to book a demo.
The original GET /autocomplete endpoint was retired on September 25, 2026. If you integrated with it, see the migration notice.