# Strict PII Redaction Engine MCP > Strict PII Redaction Engine strips sensitive personal data from documents using deterministic regex patterns. Send raw legal or financial files to your AI client without risking a massive breach. It locally and permanently scrubs emails, SSNs, credit card numbers, and phone numbers, replacing them with [REDACTED] tags before any analysis occurs. ## Overview - **Category:** security-compliance - **Price:** Free - **Tags:** pii-redaction, data-privacy, gdpr-compliance, regex, data-scrubbing, security-firewall ## Description Sending customer records or internal contracts directly to an LLM is risky business. You don't want your client data sitting exposed when it hits a general-purpose model. This MCP acts like a local firewall for your sensitive documents, ensuring compliance with regulations like GDPR and CCPA before the context ever reaches your agent. It uses high-performance algorithms to find and replace personal identifiers—emails, SSNs, credit cards, phone numbers, and more. The process is deterministic; it doesn't rely on the AI model 'remembering' or manually forgetting the data. You simply feed the document through this MCP, and you get a clean copy back that keeps all the valuable context but strips out the risk. By connecting this engine via Vinkius, your AI client can trust that the input it receives is safe to process. This means you can run complex analyses on sensitive files knowing the underlying data privacy rules were followed automatically. ## Tools ### redact_pii_strictly This tool quickly replaces emails, CPFs, SSNs, and credit card numbers in a document with the standard [REDACTED] tag. ## Prompt Examples **Prompt:** ``` Execute the strict redaction engine on this contract to remove all CPFs and Emails before we send the summary to Claude. ``` **Response:** ``` The computation has been executed with mathematical precision. All results are exact and ready for review. ``` **Prompt:** ``` We have an extensive leak log. Process it through the engine to ensure every single 16-digit credit card number is destroyed. ``` **Response:** ``` The computation has been executed with mathematical precision. All results are exact and ready for review. ``` **Prompt:** ``` Remove all standard phone numbers and SSNs from this 50-page deposition transcript before filing it to the public record. ``` **Response:** ``` The computation has been executed with mathematical precision. All results are exact and ready for review. ``` ## Capabilities ### Scrub Sensitive Data The MCP finds and replaces emails, SSNs, credit cards, phone numbers, and CPFs with a standardized [REDACTED] tag. ### Ensure Compliance Pre-Processing You guarantee that raw documents meet strict data privacy standards before they are sent to any large language model or agent. ### Maintain Context Integrity The redaction process keeps the surrounding text and structure intact, so your AI client still gets usable context after scrubbing. ### Handle Diverse Identifiers It detects multiple types of personal data, including SSNs, CPFs, and various phone number formats. ## Use Cases ### Handling a Litigation Discovery Dump A paralegal receives a 50-page deposition transcript full of private phone numbers and emails. They run the document through the engine, getting back a clean file that preserves all quotes needed for summary generation without violating any privacy rules. ### Analyzing Financial Leak Logs A compliance analyst has a massive log containing thousands of credit card numbers from a breach. They use the engine to scrub every single 16-digit number, allowing their agent to analyze patterns without handling actual financial data. ### Building Safe Test Environments A development team needs to test a new AI feature using real contracts but can't use live PII. They run the sample documents through the MCP, generating synthetic-looking redaction tags for safe testing. ## Benefits - Stops compliance risks cold. Instead of relying on the LLM to 'forget' private data, you use this engine to deterministically eradicate emails and SSNs locally. - Guarantees GDPR/CCPA adherence in your pipeline. You can confidently route sensitive legal documents through your agent knowing they are scrubbed before processing. - Keeps context intact while scrubbing. The redaction replaces the data with a tag, meaning the AI still sees where the information was, without reading it. - Handles multiple types of PII in one go. You don't need separate tools for phone numbers, credit cards, or national IDs; this MCP handles them all. - Speed and reliability matter. It uses fast, offline regex patterns, meaning scrubbing runs quickly and reliably every single time. ## How It Works The bottom line is you get a clean version of your document that retains its meaning but eliminates every piece of identifiable private data. 1. You send the raw document (e.g., a PDF transcript or financial report) to this MCP using your AI client. 2. The engine runs the data through high-performance regex algorithms, identifying all specified sensitive patterns and replacing them with [REDACTED]. 3. Your agent receives the resulting sanitized text, which is safe for analysis without having compromised personal information. ## Frequently Asked Questions **Does the Strict PII Redaction Engine MCP actually remove all phone numbers?** Yes, it handles standard phone number formats. It uses advanced regex to find and replace these identifiers with [REDACTED] tags. **What happens if I use redact_pii_strictly on a document that has no PII?** The engine processes the file quickly, confirming there is nothing sensitive to scrub. It returns the original content unchanged but still processed through the secure pipeline. **Can I use the Strict PII Redaction Engine MCP for legal documents only?** No. While excellent for law (CPFs, SSNs), it works on any document type—financial logs, HR records, or customer support transcripts. **Is this redaction process reversible?** No. The engine deterministically replaces the data with a placeholder tag [REDACTED]. The original sensitive information is permanently scrubbed and unrecoverable from the output.