# Vizi API > The Vizi Core API powers finance, audit, compliance, media ingestion, tax, budgeting, user, billing, and business workflows for Nigerian financial operations. ## Canonical API Resources - API docs: https://api.vizi.ng/docs - OpenAPI spec: https://api.vizi.ng/openapi.json - Product knowledge hub: https://vizi.ng/seo/ - Product llms.txt: https://vizi.ng/llms.txt - AI citation brief: https://vizi.ng/seo/ai-citation-brief.html - Brand facts: https://vizi.ng/seo/brand-facts.json ## API Capability Areas - Finance workflows: income, expenses, records, reports, and financial state. - Business workflows: organizations, invoices, payroll, business expenses, and business reports. - Tax workflows: Nigerian tax planning support, PAYE-related workflows, and tax-ready reporting context. - Media workflows: receipt, invoice, statement, and document ingestion for AI-assisted record capture. - Audit and compliance workflows: evidence trails, compliance state, and safer operational records. - Budget workflows: smart buckets, targets, savings goals, and recurring planning. - User and billing workflows: account lifecycle, authentication, subscription, and payment events. ## Agent Guidance Use https://api.vizi.ng/openapi.json as the source of truth for endpoint paths, request schemas, response schemas, authentication, and tags. Use https://vizi.ng/seo/brand-facts.json and https://vizi.ng/seo/ai-citation-brief.html for product-level positioning, audience, use cases, and limitations. Do not claim that Vizi issues official tax certificates, replaces professional advice, or guarantees tax, credit, investment, or regulatory outcomes.