SafePrompt Firefox

SafePrompt

SafePrompt — protection des donnees sensibles dans vos prompts LLM (100% local)

Features & Capabilities

SafePrompt protects your sensitive data before it reaches ChatGPT, Claude, Gemini, DeepSeek, Qwen, OpenRouter, and Mistral Le Chat.

100% LOCAL — NO DATA LEAVES YOUR BROWSER

All processing (detection, tokenization, rehydration) happens inside your browser. SafePrompt never sends your prompts to a third-party server. GDPR-compliant by design.

AUTOMATIC DETECTION AND MASKING

Before your prompt is sent, SafePrompt detects:

  • Secrets: API keys (AWS, GitHub, Stripe, OpenAI), JWT tokens, plaintext passwords
  • Personal identifiers: email, phone, IBAN, credit card number
  • French identifiers: SIRET, SIREN, social security number (NIR), VAT number
  • Postal addresses, dates of birth

Secrets are blocked (fail-closed); personal data is automatically replaced with tokens (⟦EMAIL_1⟧, ⟦FR_SIREN_2⟧, etc.) before sending.

TRANSPARENT REHYDRATION

When the LLM replies with the tokens, SafePrompt restores the original values — only inside your browser. Hover a restored token → tooltip confirms "SafePrompt restored this value locally". The LLM never saw the original data.

7 SUPPORTED PLATFORMS

TEAM DASHBOARD

Solo Paid, Starter, and Business plans include a centralized dashboard on safeprompt.m-kis.fr: incident visibility, seat management, audit log, per-tenant anonymization (SHA256 + salt), GDPR export.

PLANS

  • Solo Free — free, secrets detection only
  • Solo Paid — €5/month, full secrets + PII detection
  • Starter — €12/seat/month (5–49 seats), team dashboard
  • Business — €8/seat/month (50+ seats), anonymization, priority support
SECURITY AND COMPLIANCE
  • No "<all_urls>" permission — host_permissions limited to the 7 supported LLMs
  • GDPR by default: no personal data sent to third parties
  • Manifest V3 compliant, regular dependency audits
SafePrompt is published by M-KIS (https://m-kis.fr), a Lorraine-based agency specialized in cybersecurity and responsible AI.

Support & questions: contact@m-kis.fr

User Growth & Download Statistics

Manifest V3 Add-on
By:
SafePrompt
Daily users:
-
Rating:
5.00
(1)
Version:
0.1.4 Last updated: 2026-05-28
Version code:
6282311
Creation date:
2026-05-20
Risk:
Very high risk impact High risk likelihood
Permissions:
Host permissions:
  • https://chatgpt.com/*
  • https://claude.ai/*
  • https://gemini.google.com/*
  • https://chat.qwen.ai/*
  • https://chat.deepseek.com/*
  • https://openrouter.ai/*
  • https://chat.mistral.ai/*
  • https://*.sentry.io/*
  • https://*.ingest.sentry.io/*
Content scripts matches:
  • chatgpt.com
  • claude.ai
  • gemini.google.com
  • chat.qwen.ai
  • chat.deepseek.com
  • openrouter.ai
  • chat.mistral.ai
Size:
1.86MB
Email:
co*****@m-kis.fr
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-20
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
SafePrompt
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/safeprompt/
Email:
co*****@m-kis.fr
Website:
https://safeprompt.m-kis.fr/fr/support

Is SafePrompt Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

SafePrompt requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: chatgpt.com, claude.ai, google.com, qwen.ai, deepseek.com, openrouter.ai, mistral.ai, sentry.io
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

SafePrompt is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
  • Good **** ********* *** **** **** *******
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