97%
97%
Search accuracy
100%
100%
Results cited to source
<500ms
<500ms
Response time
The gap between AI capability and audit requirements.
Large language models hallucinate. They cite sources that do not exist. They present fiction as fact with absolute confidence. When challenged, they fabricate references that look plausible but lead nowhere.
For audit and tax professionals, that is not a minor inconvenience. It is a liability. Your work demands evidence that holds up to scrutiny. Your clients expect proof. Regulators require traceability. Generic AI cannot deliver that.
Structured standards. Verifiable results.
Prevector provides MCP (Model Context Protocol) servers consisting of structured databases of official standards that AI systems can query directly. Instead of generating answers from training data, your AI retrieves verified content from authoritative sources.
Every response is traced to its source. Every citation points to an exact paragraph in official documentation. No fabricated references. No hallucinated standards. Your AI becomes a research tool you can actually rely on.
3 steps to verifiable AI
Integrate Prevector into your existing AI workflow without changing your infrastructure. The MCP protocol handles communication between your AI system and our structured standards databases.
1. Connect
Add Prevector MCP servers to your AI system in minutes. Works with ChatGPT, Claude, Gemini and custom AI applications. No modifications needed to your existing stack.
2. Query
Your AI queries structured standards data using hybrid semantic and keyword search. Results are ranked by relevance with paragraph-level accuracy, every time.
3. Cite
Every response includes complete citations traceable to official sources. Verify any claim by following the reference directly to the source document.
See how it works in detail →
Purpose-built data collections
● Available
NL GAAP (RJ)
The complete Richtlijnen voor de Jaarverslaggeving from the Dutch Accounting Standards Board. Includes all guidelines, interpretations, and practical guidance for Dutch statutory reporting. Essential for accountants and advisors serving mid-market Dutch companies reporting under NL GAAP.
● Available
NL GAAS (NV COS)
The complete Dutch auditing standards including all NV COS standards and practical guidance from the NBA. Built on ISA with Dutch-specific requirements and interpretations. Essential for Dutch audit firms and practitioners performing statutory audits.
● Available
ESRS
The complete EU sustainability reporting framework. Includes all ESRS disclosure requirements and application requirements, structured for fast, accurate research. Built for audit and advisory firms navigating CSRD compliance.
◐ Planned
IFRS
The complete IFRS Accounting Standards. Includes interpretations, application guidance, and optimised retrieval for definitions, corresponding application guidance and disclosure and presentation requirements. Essential for audit firms serving international clients reporting under IFRS.
◐ Planned
◐ Planned
Dutch tax
Comprehensive Dutch tax legislation covering corporate income tax, VAT, wage tax, and related fiscal regulations. Sourced directly from official Dutch government systems and updated daily. Designed for tax advisors who need reliable, current Dutch tax law at their fingertips.
View full standards coverage →
Built for professionals who need proof
Audit firms
Enable your teams to use AI for substantive work with confidence. Research standards faster and draft documentation with verified references. Every finding is traceable to its source, ready for review.
Tax advisors
Research tax positions with AI that cites the exact legal basis. Build defensible arguments backed by authoritative sources. Accelerate client work without sacrificing accuracy.
Software companies
Integrate verified standards into your accounting or audit software. Add AI-powered research capabilities that your clients can trust. Differentiate your product with audit-grade accuracy.
What makes us different
Domain expertise
Founded by a Dutch Chartered Accountant with ten years at PwC and Deloitte. We have been on the other side of the table and reviewing workpapers, defending positions and demanding evidence. Prevector is built on that experience: solutions designed for how auditors actually work.
Custom-built, not configured
Behind every Prevector MCP server is a database architected for that specific standard with hierarchy preserved, cross-references mapped and search tools calibrated. CSRD has different retrieval needs than Dutch corporate tax law. We build for those differences instead of forcing everything through a generic pipeline. Precision by design, not by luck.
Give your AI the knowledge it's missing
Schedule a meeting to see Prevector in action
Make AI verifiable.
Knowledge infrastructure for assurance & tax.
Make AI verifiable.
Knowledge infrastructure for assurance & tax.
97%
Search accuracy
100%
Results cited to source
<500ms
Response time
The gap between AI capability and audit requirements.
Large language models hallucinate. They cite sources that do not exist. They present fiction as fact with absolute confidence. When challenged, they fabricate references that look plausible but lead nowhere.
For audit and tax professionals, that is not a minor inconvenience. It is a liability. Your work demands evidence that holds up to scrutiny. Your clients expect proof. Regulators require traceability. Generic AI cannot deliver that.
Structured standards. Verifiable results.
Prevector provides MCP (Model Context Protocol) servers consisting of structured databases of official standards that AI systems can query directly. Instead of generating answers from training data, your AI retrieves verified content from authoritative sources.
Every response is traced to its source. Every citation points to an exact paragraph in official documentation. No fabricated references. No hallucinated standards. Your AI becomes a research tool you can actually rely on.
3 steps to verifiable AI
Integrate Prevector into your existing AI workflow without changing your infrastructure. The MCP protocol handles communication between your AI system and our structured standards databases.
1. Connect
Add Prevector MCP servers to your AI system in minutes. Works with ChatGPT, Claude, Gemini and custom AI applications. No modifications needed to your existing stack.
2. Query
Your AI queries structured standards data using hybrid semantic and keyword search. Results are ranked by relevance with paragraph-level accuracy, every time.
3. Cite
Every response includes complete citations traceable to official sources. Verify any claim by following the reference directly to the source document.
See how it works in detail →
Purpose-built data collections
● Available
NL GAAP (RJ)
The complete Richtlijnen voor de Jaarverslaggeving from the Dutch Accounting Standards Board. Includes all guidelines, interpretations, and practical guidance for Dutch statutory reporting. Essential for accountants and advisors serving mid-market Dutch companies reporting under NL GAAP.
● Available
NL GAAS (NV COS)
The complete Dutch auditing standards including all NV COS standards and practical guidance from the NBA. Built on ISA with Dutch-specific requirements and interpretations. Essential for Dutch audit firms and practitioners performing statutory audits.
● Available
ESRS
The complete EU sustainability reporting framework. Includes all ESRS disclosure requirements and application requirements, structured for fast, accurate research. Built for audit and advisory firms navigating CSRD compliance.
◐ Planned
IFRS
The complete IFRS Accounting Standards. Includes interpretations, application guidance, and optimised retrieval for definitions, corresponding application guidance and disclosure and presentation requirements. Essential for audit firms serving international clients reporting under IFRS.
◐ Planned
Dutch tax
Comprehensive Dutch tax legislation covering corporate income tax, VAT, wage tax, and related fiscal regulations. Sourced directly from official Dutch government systems and updated daily. Designed for tax advisors who need reliable, current Dutch tax law at their fingertips.
View full standards coverage →
Built for professionals who need proof
Audit firms
Enable your teams to use AI for substantive work with confidence. Research standards faster and draft documentation with verified references. Every finding is traceable to its source, ready for review.
Tax advisors
Research tax positions with AI that cites the exact legal basis. Build defensible arguments backed by authoritative sources. Accelerate client work without sacrificing accuracy.
Software companies
Integrate verified standards into your accounting or audit software. Add AI-powered research capabilities that your clients can trust. Differentiate your product with audit-grade accuracy.
What makes us different
Domain expertise
Founded by a Dutch Chartered Accountant with ten years at PwC and Deloitte. We have been on the other side of the table and reviewing workpapers, defending positions and demanding evidence. Prevector is built on that experience: solutions designed for how auditors actually work.
Custom-built, not configured
Behind every Prevector MCP server is a database architected for that specific standard with hierarchy preserved, cross-references mapped and search tools calibrated. CSRD has different retrieval needs than Dutch corporate tax law. We build for those differences instead of forcing everything through a generic pipeline. Precision by design, not by luck.
Give your AI the knowledge it's missing
Schedule a meeting to see Prevector in action
building blocks for verifiable AI
© 2026 Prevector B.V.
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Make AI verifiable.
Knowledge infrastructure for assurance & tax.