Use AI without
leaking what matters.
GuardInput scans prompts and files before they reach ChatGPT, Claude, Gemini, or Copilot, detecting sensitive data, masking it, and keeping a clear AI Receipt.
Hi PERSONSarah Chen,
Q3 review for PERSONMarcus Hale (EMP-4472).
Salary: AMOUNT$94,500
CC: EMAILj.cole@acme-corp.com
EMAILhr@acme-corp.com
Token: APIKEYsk-proj-7fK9mNpQ2vRxL…
Portal: URLhr.acme-corp.com/Q3
Hi PERSONSarah Chen,
Q3 review for PERSONMarcus Hale (EMP-ORG4472).
Salary: AMOUNT$94,500
CC: EMAILj.cole@acme-corp.com
EMAILhr@acme-corp.com
Token: APIKEYsk-proj-7fK9mNpQ2vRxL…
Portal: URLhr.acme-corp.com/Q3
Local-first scanning
Sensitive detection runs client-side before any data leaves your browser.
Explainable detection
Every flag tells you exactly what was found, which category, and why.
Readable receipts
A structured log of every AI interaction, ready for audit or compliance review.
Before it goes to AI,
see what it contains.
GuardInput reads your prompt or document and highlights every piece of sensitive data, before you hit submit.
Hi there,
I need help reviewing the contract for PERSONClaire Dubois.
She works at ORGLemaire & Partners and her retainer is AMOUNT€12,400.
Email: EMAILclaire.dubois@lemaire.fr
Direct line: PHONE+33 6 12 34 56 78
API token: APIKEYsk-abc123xyzQ9…
Hi there,
I need help reviewing the contract for [PERSON_1].
She works at [ORG_1] and her retainer is [AMOUNT_1].
Email: [EMAIL_1]
Direct line: [PHONE_1]
API token: [API_KEY_1]
Detection categories
Drop a document.
Get back a safe copy.
Not just prompts, GuardInput reads whole files, strips hidden metadata, masks every sensitive field, and hands you a clean copy to attach. The original never leaves your machine.
Drop a file or browse
PDF · DOCX · TXT · CSV · up to 25 MB
Findings will appear here
Risk reduced
91 → —
Reads real formats
PDF, DOCX, TXT and CSV, parsed locally in the app.
Sees hidden data
Author tags, GPS, track-changes and embedded metadata.
Exports a clean copy
Masked, logged on a receipt, ready to share with AI.
Every sensitive AI interaction
should leave a trace.
GuardInput
AI Protection Receipt
Protected before sending
Risk reduced
87 → 24
Human-readable summary
Document prepared for Claude
PDF · 3 pages · Submitted 10:30 UTC
Initial risk: High (87/100)
Detected: person names, emails, financial amount
Actions taken
Names replaced · Emails masked · Metadata removed
Prepared risk score
24 / 100
Protection that lives
in your menu bar.
A lightweight desktop agent watches every paste into ChatGPT, Claude or Copilot, and any app, catching sensitive data before it ever leaves your machine. No copy-paste into a separate tool. It just sits there and guards.
Message
Works everywhere
Any AI app or browser tab, intercepts at the OS level.
Stays local
Detection runs on-device. Nothing is uploaded to scan.
One-click mask
Approve from a popup, send safely, keep the receipt.
For every team that touches
sensitive data.
Summarize a client contract safely
Extract clauses from NDAs, service agreements, and litigation docs without exposing party names, financial terms, or confidential details to the model.
Clean CVs and performance reviews
Run AI analysis on employee records and assessments while removing identifying data before it reaches any public model.
Remove sensitive reporting details
Prepare financial summaries, audit notes, and board reports for AI assistance, without exposing figures, bank details, or account data.
Prepare customer tickets for AI
Anonymize complaints, chat logs, and email threads before routing them through AI triage or summarization tools.
Catch API keys before prompting
GuardInput detects secrets, tokens, credentials, and internal endpoints before they are copy-pasted into Claude, ChatGPT, or Copilot.
More coming
Recruitment, accounting, research, media, and more. Tell us what you need.
Submit a use caseMake AI policies usable
at the moment of copy-paste.
GuardInput helps teams reduce unnecessary personal and confidential data sent to public AI tools. It supports better habits around GDPR, AI Act readiness, NIS2 risk awareness, and internal AI usage policies, without claiming automatic compliance.
GuardInput is a risk-reduction tool, not a legal certification. It helps you work more carefully, compliance decisions remain yours.
GDPR
Minimize personal data sent to third-party AI processors before submission.
EU AI Act
Build internal readiness habits before obligations formally apply.
NIS2
Reduce risk surface in AI-assisted workflows for covered entities.
AI Usage Policy
Enforce your organization's AI rules at the prompt level, not after the fact.
Bring the input gate
to your AI workflow.
We are building GuardInput for teams who take data handling seriously. Join early and help shape what it becomes.