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A professional integrity tool for AI
on an AI hallucination again.
Built for privacy-conscious professionals who need to protect client data, verify online claims and AI-generated content, and deliver accurate AI-assisted work without risking credibility.
Browser extension and Web app
Free basic account for early users.
CertaPrompt works quietly in the background. Just three steps — no training, no setup complexity.
Prompt ChatGPT, Claude, or any AI tool. CertaPrompt works alongside them all.
Sensitive information is automatically detected and removed before it leaves your browser.
AI responses are checked against authoritative sources. You get confidence scores and evidence.
A Chrome extension that works alongside every AI tool you already use and helps you research, review and verify content whether or not it's AI-assisted.
CertaPrompt sits between you and any AI provider. Your existing workflow stays the same.
Use AI for research, drafting, and daily work
Strips confidential client data before it reaches any AI
Verifies every claim using proprietary technology across 120+ databases
Research+ verified company checks and entity validation
AI identifiers removed, verified sources, and professional-ready results
Use AI for research, drafting, and daily work
Strips confidential client data before it reaches any AI
Verifies every claim using proprietary technology across 120+ databases
Research+ verified company checks and entity validation
AI identifiers removed, verified sources, and professional-ready results
Use CertaPrompt to protect yourself when using AI.
Lawyers / Professionals / Executives
The Director
The Solo Professional
Protect your data, verify AI content, and keep a defensible record of every interaction.
Strip Sensitive Data
Removes confidential data in your browser before it reaches any AI. Nothing sensitive ever leaves your device.
AI Fingerprint Detection & Removal
Spots and removes AI-generated markers so your work reads as original and professionally written.
Verified Accuracy
Multi-model consensus, PrimaSource™ RAG, and anti-hallucination checks against 120+ authoritative databases.
Verbatim Quotes via PrimaSource™
Pulls exact quotes from our RAG database so you can be confident in specific citations and claims.
Signed Verification Receipts
Regulator-ready detailed research receipt you can retain for your records.
Professional Prompt Library
Expert-crafted prompts for common professional tasks. Better outputs from your first prompt.
Works With Every LLM
One extension for ChatGPT, Claude, Gemini, Mistral, and any AI tool you use. No lock-in.
Other tools solve one piece of the puzzle. CertaPrompt is the complete AI integrity tool for your daily workflow.
| Feature | CertaPrompt | Frontier LLMsChatGPT · Claude · Gemini · Mistral | Sensitive Data & RedactionPresidio · Private AI · Adobe | AI SearchPerplexity |
|---|---|---|---|---|
| Protect | ||||
| Sensitive data detection & removal (55+ types) | ||||
| On-device browser-based privacy (zero-knowledge) | ||||
| AI fingerprint detection & removal | ||||
| Prompt injection & manipulation safeguards | ||||
| Verify | ||||
| AI content verification against 120+ databases | ||||
| Source-ranked evidence with confidence scoring | ||||
| Verbatim source quotes via PrimaSource™ RAG | ||||
| Prove | ||||
| Regulator-ready detailed research receipt | ||||
| EU AI Act / GDPR compliance support | ||||
| Professional prompt library | ||||
| Independent: Works with any LLM (LLM-agnostic) | ||||
Sensitive data detection & removal (55+ types)
On-device browser-based privacy (zero-knowledge)
AI fingerprint detection & removal
Prompt injection & manipulation safeguards
AI content verification against 120+ databases
Source-ranked evidence with confidence scoring
Verbatim source quotes via PrimaSource™ RAG
Regulator-ready detailed research receipt
EU AI Act / GDPR compliance support
Professional prompt library
Independent: Works with any LLM (LLM-agnostic)
PrimaVerify brings the same protection to your entire team. Enterprise AI integrity with team-wide data protection, output verification across 120+ databases, and centralised audit trail management.
Designed for regulated industries with compliance obligations.
Learn about PrimaVerifyText to analyse
The FCA fined Barclays £26m in 2023 for failing to disclose material conflicts of interest in its wealth management division...
Choose action:
Remove Sensitive Data
ON-DEVICE PRIVACYScan for AI Fingerprints + flags
ON-DEVICE PRIVACYResearch & Verify
ON-DEVICE or SERVER-SIDEPrompt Quality Boost
ON-DEVICE PRIVACYSensitive Data, AI Fingerprint and Prompt Boost run 100% in your browser. 100% on-device.
CertaPrompt is specifically designed to protect client confidentiality when professionals use AI tools like ChatGPT or Claude. It automatically detects client names, case references, employee records, financial details, and other confidential data, then removes them before your prompt reaches any AI provider. UK and US courts have actively warned about the risks of exposing client data to consumer AI. CertaPrompt ensures you can use AI productively while maintaining client confidentiality, legal professional privilege, and regulatory compliance.
CertaPrompt detects and removes 55+ types of sensitive data from your prompts, including client names, email addresses, financial figures, account numbers, case references, and confidential business information. This happens entirely on your device using zero-knowledge architecture. Nothing sensitive leaves your browser. You always have full control over what is sent to the AI.
When you receive an AI-generated response, Accuracy Assist verifies claims using proprietary verification technology across 120+ databases, including government registries, corporate filings, and primary sources. Each source is ranked by tier and shown alongside the claim it supports. You receive a confidence score, source-ranked evidence with key quotes, and a clear verdict: Verified, Partially Verified, or Unverified.
CertaPrompt works with ChatGPT, Claude, Gemini, Mistral, and any other AI tool you use in your browser. It is completely LLM-agnostic. You are never locked into a single provider and can switch models freely.
CertaPrompt is built on a privacy-first architecture. Sensitive data removal runs entirely on your device (client-side), so your data never leaves your browser. For verification, claims are checked server-side against our authoritative source network, but you always have the option to strip confidential content first. We never train our systems on your sensitive data. We may use anonymised analytics data, such as feature usage statistics, to improve the service (see our Privacy Notice for full details).
CertaPrompt generates detailed, timestamped research receipts that record what sources were checked and what verdict was reached. These support your compliance efforts under the EU AI Act (with the August 2026 enforcement deadline) and GDPR by providing an evidential foundation for demonstrating how AI-generated content was checked before reliance. All verification processing runs on EU data centres.
As AI makes it easier to generate fake corporate entities, standard web searches are no longer reliable. Research+ bypasses standard search engines and queries our proprietary database alongside Tier 1 government and corporate registries. By evaluating filing histories and primary-source data, it efficiently cuts through synthetic fraud to verify true business entities.
Free basic account for early users.