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Table of Contents

This jurisdiction is in beta. Check the live pricing page or contact support before relying on it in production. US-MO is accepted by the API but is not yet listed in the public countryCode enum of the OpenAPI spec.

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Data Sources

Missouri data is sourced from the Missouri Secretary of State — Business Filings register, the official register of every entity formed or qualified to do business in Missouri. The register returns legal name, Business Identification Number, entity type, status, formation date, domestic/foreign classification, home jurisdiction, registered agent, multiple office addresses, and a full filing history. Missouri supports verification mode only: requests using mode: "onboarding" return a fast_source_unavailable error. Use mode: "verification" (or omit the mode to get the default).
No bulk feed. Missouri does not publish a bulk dataset, so every lookup queries the register directly.

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Company Identifiers

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Query Identifiers

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BIN prefix → entity type

The prefix is informational and the list is not closed; the authoritative entity type is read from the entity record itself.
Name search resolves the charter number of its first few results only. The others carry a Topograph id, MOBSD- followed by the register’s internal record number (e.g. MOBSD-551157). Pass it to /v2/company unchanged: the company comes back under its charter number (FL0029123 for that example). A bare record number is not accepted, because it cannot be told apart from a charter number typed without its letters.

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Search Capabilities

Topograph exposes two search modes for Missouri:
  • Business Name: 2 to 200 characters, matched with the register’s default name search.
  • BIN: exact-match lookup on the public Business Identification Number.

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Active companies only

Search can return companies that are no longer active. activeOnly=true removes those whose status is known at search time; the others are kept. Registration-number lookups and the top name-search matches are filtered by status. Further name-search matches are returned whatever their status.

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Quirks & Gotchas

No ownership filings. Missouri does not require LLCs or corporations to publish owner, member, manager, or officer information. The only legal-representative record consistently published is the registered agent. Officer and owner rows are populated almost exclusively for Fictitious Name registrations.
Registered Agent fallback. When a foreign entity has lapsed its registered agent, the register displays Secretary of State as the agent of record. Topograph treats that value as “no agent on file” and returns an empty otherKeyPersons array.
Placeholder addresses on legacy records. A small number of entities filed before the SOS migrated to the current system (e.g. credit unions chartered in the 1930s) carry the literal placeholder No Address to Migrate <City>, <State> in the address field. Topograph returns the placeholder text in legalAddress.addressLine1 and the state code in legalAddress.region, and leaves city and postalCode undefined on those records.

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Mappings

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Company Status

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Data Availability