Original promptOn your device
Protect confidential information before using AI.
Naosuu is a privacy-first tool for ChatGPT, Claude, and Gemini. Review and replace sensitive values before sending your prompt, then restore them in the response on your device.
Protected by Naosuu — only placeholders will be transmitted
- 01 Write your prompt
- 02 Review & protect
- 03 See the difference
Scripted detections · Fictional data · No AI connection
01 / BEFORE THE PROMPT LEAVES
What you wrote.
What the AI received.
The same request, with the values you protect replaced. Select a highlighted value to follow its placeholder across both versions.
Protected promptSent to AI
Wayne Enterprises and WE share [ORG_2]. Both references remain connected.
02 / WHEN THE RESPONSE RETURNS
Read the response with the original values restored.
When the AI responds, Naosuu replaces the placeholders with the original values on your device. The response remains readable without giving the AI the underlying confidential information.
AI response Placeholders
The proposed acquisition of[ORG_1]by[ORG_2]has a stated transaction value of[FINANCIAL_FIGURE_1]…
Restored on your device
Your response Original values
The proposed acquisition of LexCorp by Wayne Enterprises has a stated transaction value of $4,200,000,000…
03 / LEGAL INFORMATION, IN CONTEXT
Sensitive data in legal work goes beyond names and email addresses.
Naosuu identifies information that appears throughout legal matters and keeps related references consistent within the same session.
ONE SESSION / CONSISTENT REFERENCES
Wayne Enterprises
[ORG_2]WE
[ORG_2]A company name and its abbreviation share the same placeholder. The AI can follow the relationship without receiving either original value.
Try it in the demo04 / PRIVACY FIRST, ON YOUR DEVICE
Your original values stay on your device.
Privacy starts with sharing less. Detection, placeholder mapping, and restoration happen locally. You review what to protect before the AI receives your prompt.
YOUR DEVICE
- Original promptWayne Enterprises · Harvey Dent
- Naosuu detectionReview the values to protect
- Placeholder mappingOriginal values paired with placeholders
- Protected prompt[ORG_2] · [PERSON_1]
Protected text only
[ORG_2]
[PERSON_1]AI
ChatGPT
Claude
Gemini
LOCAL DETECTION
Sensitive values are identified before the prompt is sent.
LOCAL MAPPING
Original values are associated with placeholders within the browser session.
LOCAL RESTORATION
Placeholders in the AI response are replaced locally with the original values.
PDF DOCX TXT
ILLUSTRATIVE PROTECTED EXCERPT
Confidentiality memo
Proposed acquisition · Board review
[ORG_2] proposes to acquire [ORG_1] for a stated value of [FINANCIAL_FIGURE_1].
The transaction is referred to internally as [PROJECT_NAME_1]. Direct correspondence to [PERSON_1] at [EMAIL_1].
This memo is prepared for review by the board of directors.
Extract and protect the text in your browser.
05 / BEYOND THE COMPOSER
Protect documents before using them with AI.
Process supported documents locally, replace sensitive values, then use the protected content in your AI workflow.
PDF, Word (.docx), and plain text files are supported. Review detections in Pre-Flight, then copy the protected text into your AI prompt.
- Document
- Detection
- Protection
- AI
06 / THE MATTERS YOU WORK ON
Designed for legal workflows.
CORPORATE & M&A
Keep transaction details out of the prompt you send.
Review transaction parties, project names, deal values, EINs, and counsel information before requesting a draft.
Example protected request
Draft a board resolution for the acquisition of [ORG_1] by [ORG_2] for [FINANCIAL_FIGURE_1]. Refer to the matter as [PROJECT_NAME_1].
Fictional example. Review detections before sending.
07 / A CHECKPOINT BEFORE SEND
How the workflow changes.
Compare reviewing a protected prompt, replacing values by hand, and sending the original text directly.
| Workflow | naosuu | Manual redaction | Sending the original directly |
|---|---|---|---|
| Protection before AI transmission | Review and apply replacements | Replace values before sending | Original values are sent |
| Placeholder mapping | Created automatically | Maintain your own map | No replacement map |
| Consistent alias mapping | Linked references share a placeholder | Track each reference yourself | Original references remain visible |
| Local restoration | Original values restored in the reply | Replace placeholders yourself | No restoration step |
| Legal-specific identifiers | Detected values presented for review | Identify and replace them yourself | Included in the original text |
| Manual effort | Review detections and exceptions | Find, replace, map, and restore | No redaction work |
08 / INDIVIDUAL ATTORNEY LICENSE
Choose your billing schedule.
30-day free trial included.
Team and firm-wide pricing is available.
Contact us for details ↗
Monthly plan
$9.99USD / month per user
Billed monthly.
