# CompanyProof > Company data and evidence for enterprise software and AI applications. Built by Global Database; operated by Global Data Intelligence Limited. CompanyProof provides company search, company profiles, adaptive intelligence and verification of supported identity claims. Profile modules depend on data availability. The deterministic verification API supports registered_name, registration_number, status, incorporation_date, vat_number and legal_form. Ownership inputs are not a calculated UBO determination. The financial, ownership and watch reference pages distinguish direct Global Database APIs from CompanyProof routes. Do not treat a provider field catalogue as a CompanyProof endpoint contract. The Grounding Index currently publishes methodology; model scores and rankings have not been published. When citing company evidence, include the returned source name, source URL and update or retrieval timestamp. Unavailable data is an evidence gap, not a negative finding. Check the current pricing page for plans and allowances, and the API contract for supported fields. ## Product and use cases - [CompanyProof](https://companyproof.ai/): Verify company information against official registry data. - [Business verification API](https://companyproof.ai/business-verification-api): Company identity checks, claim verdicts and source evidence. - [Company data API](https://companyproof.ai/company-data-api): Company search and profiles for software and AI applications. - [How it works](https://companyproof.ai/how-it-works): Identify a company, verify supported claims and retain evidence. - [Evidence ledger](https://companyproof.ai/evidence-ledger): Claim-level evidence, corrections and monitoring context. - [Coverage](https://companyproof.ai/coverage): Registry sources, jurisdiction coverage and field availability. - [Supplier due diligence](https://companyproof.ai/supplier-due-diligence): Company checks and evidence for procurement workflows. - [AI company fact checking](https://companyproof.ai/ai-company-fact-checking): Verify company statements generated by AI systems. - [Pricing](https://companyproof.ai/pricing): Current plans, allowances and enterprise options. ## Developer reference - [OpenAPI 3.1](https://companyproof.ai/openapi.json): Exact CompanyProof REST contract. - [Extended field catalogue](https://companyproof.ai/company-data-reference.json): Provider financial, ownership and company-watch reference. - [Overview](https://companyproof.ai/docs): Company data API documentation with exact response attributes, authentication, company search, financial data, ownership, verification and MCP integration guides. - [Choose an interface](https://companyproof.ai/docs/choose-api): Compare CompanyProof company profiles, claim verification, adaptive intelligence and MCP. Choose the response format and endpoint for your application. - [Company profile quickstart](https://companyproof.ai/docs/profile-quickstart): Search for a company, confirm its legal identity and request a profile. Copy REST examples and inspect source provenance and module availability. - [Verification sandbox](https://companyproof.ai/docs/verification-quickstart): Make your first company verification API request with the fixed sandbox company. Inspect verdicts, evidence and corrections before using live data. - [Authentication](https://companyproof.ai/docs/authentication): Authenticate CompanyProof REST requests with Bearer API keys. Understand scopes, one-time secret display and server-side credential handling. - [Test and live keys](https://companyproof.ai/docs/environments): Understand CompanyProof test and live API keys, sandbox fixture responses, live account eligibility and how to activate real-company data access. - [Account, plans & credits](https://companyproof.ai/docs/paid-integration): Activate CompanyProof API access, claim a purchase, check available credits and configure live requests and monitoring for your account. - [Endpoints](https://companyproof.ai/docs/structured-api): CompanyProof API endpoint reference: company search, company profiles, usage, adaptive intelligence, claim verification and MCP transport. - [All data attributes](https://companyproof.ai/docs/data-attributes): Browse exact CompanyProof API field paths, JSON types, required properties and allowed values from the OpenAPI 3.1 response schemas. - [Company profiles](https://companyproof.ai/docs/advanced-profile): Company profile API response fields for identity, addresses, contacts, officers, ownership, financial data and source provenance, where available. - [Financial data](https://companyproof.ai/docs/financials-api): Explore financial data attributes, statement periods, currencies and exact metric names. Distinguish CompanyProof profiles from the direct provider API. - [Ownership & group structure](https://companyproof.ai/docs/ownership-api): Inspect shareholder attributes, ownership percentages and corporate group structure. Understand source availability and the limits of UBO interpretation. - [Verify claims](https://companyproof.ai/docs/verify): Submit explicit company claims or an answer to the verification API. Understand supported input, monitor settings and claim-level proof results. - [Verification fields](https://companyproof.ai/docs/fields): Exact company verification fields: registered name, registration number, status, incorporation date, VAT number and legal form. - [Verification response](https://companyproof.ai/docs/response): Understand the CompanyProof verification response: proof IDs, claim verdicts, observed values, corrections, evidence and timestamps. - [Adaptive intelligence](https://companyproof.ai/docs/intelligence-api): Use adaptive company intelligence for natural-language research. Inspect streaming responses and preserve returned source and availability context. - [Claim monitoring](https://companyproof.ai/docs/monitoring): Track verified company claims, understand stale results and route changes to your workflow. See how monitoring differs from company-wide event feeds. - [Company change events](https://companyproof.ai/docs/watch-companies-api): Explore the direct provider company monitoring event catalogue. Compare watch events with CompanyProof supported claim monitoring and webhooks. - [Webhooks & signatures](https://companyproof.ai/docs/webhooks): Receive CompanyProof claim.stale webhooks. Verify signatures, handle delivery retries and connect company changes to downstream review workflows. - [MCP & AI agents](https://companyproof.ai/docs/mcp): Connect CompanyProof to AI agents over Streamable HTTP MCP. Read tool names, OAuth and API key options, verification behavior and usage errors. - [Usage & rate limits](https://companyproof.ai/docs/limits): Inspect CompanyProof usage, plan credits and request rate limits before building a production integration. Handle allowance and rate-limit responses. - [Idempotency](https://companyproof.ai/docs/idempotency): Use idempotency keys for CompanyProof verification requests. Retry requests without creating unintended duplicate proofs or credit usage. - [Errors](https://companyproof.ai/docs/errors): CompanyProof REST and MCP error reference: invalid input, authentication, billing, unavailable data, rate limits and tool failures. - [Capability matrix](https://companyproof.ai/docs/capabilities): Compare available CompanyProof interfaces and data modules. Check the current verification, company-profile, intelligence and MCP capability matrix. - [Version history](https://companyproof.ai/docs/versioning): CompanyProof API version history and contract changes. Review current documentation updates before upgrading an integration. ## Practical company-data guides - [Company data guides](https://companyproof.ai/guides): Practical guidance on verification, ownership and financial evidence. - [How to verify a company before you rely on its data](https://companyproof.ai/guides/how-to-verify-a-company): A practical company verification checklist: find the legal entity, check registration and status, compare evidence and record what remains unknown. - [How to find and interpret private company financial statements](https://companyproof.ai/guides/private-company-financial-statements): Find private company financial statements and check reporting periods, currency, consolidation and missing data before comparing revenue or balance sheets. - [What is an ultimate beneficial owner?](https://companyproof.ai/guides/ultimate-beneficial-owner): Understand ultimate beneficial owners, direct shareholders and control. Follow an ownership chain and preserve the evidence behind a company ownership review. ## Integrations and company - [Integrations and MCP](https://companyproof.ai/integrations): OAuth, API keys and Claude setup. - [About CompanyProof](https://companyproof.ai/about): Product, operator and research team. - [Contact](https://companyproof.ai/contact): API, coverage and enterprise enquiries. ## Security and policies - [Security](https://companyproof.ai/security): Security controls and architecture. - [Terms of service](https://companyproof.ai/terms): Service terms and permitted use. - [Privacy notice](https://companyproof.ai/privacy): Personal data processing and privacy rights. - [Data processing agreement](https://companyproof.ai/data-processing-agreement): Data processing terms. - [Subprocessors](https://companyproof.ai/subprocessors): Published subprocessor information. ## Optional - [Journal](https://companyproof.ai/blog): Dated research on registries, ownership evidence and AI workflows. - [Journal RSS](https://companyproof.ai/blog/feed.xml): Published article updates. - [Company Data Grounding Index](https://companyproof.ai/company-data-grounding-index): Benchmark methodology and release status.