GuardM8 — AI Agent Firewall

Overview

See what AI agents see. Detect prompt injection, risky tools, hidden instructions, and sensitive actions.

GuardM8 is an AI-agent security firewall. Its single purpose is to inspect webpages locally for prompt injection, deceptive machine-readable content, risky WebMCP or browser-agent tools, sensitive-data fields, and consequential agent-triggered actions, then warn the user or request approval when appropriate.

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Details

Version
0.1.0
Updated
August 16, 2026
Flag concern
Offered by
Boardz
Size
42.2KiB
Languages
English
Developer
Louis James BLYTHE
97 Cheryl Crescent Newport, NSW 2106 AU
Email
louis@apparate.com.au
Phone
+61 474 888 038
Trader
This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.

Privacy

Manage extensions and learn how they're being used in your organization

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Support

WebMCP Extension

5.0

See what AI agents can do on this page. Auto-opens when tools are found. Test & execute tools directly.

Trust VerifEye

5.0

Browse safely with a real-time security engine. Instantly evaluate domain integrity and detect hidden threats using AI.

WebChecker

0.0

Quickly verify sites, forms and payments. Anti-phishing, sensitive data guards, 100% privacy-first.

AI Shield

0.0

Protects you from AI threats while browsing. Detects hidden manipulation, prompt injection, and scams — all locally.

QAgent: AI QA Agent

0.0

AI-powered web testing. QAgent runs QA flows, validates UI behavior, and helps report issues in your browser.

Guardia

4.9

Guardia detects and prevents accidental sharing of sensitive or confidential data with third-party generative AI websites.

Jester AI

5.0

AI-powered Phishing Detection

Web Security Inspector

0.0

Inspeciona passivamente sinais públicos de segurança da aba atual e gera recomendações defensivas locais.

Continuum

0.0

AI-powered detection, browser security, and agent orchestration tool

API finder

5.0

Passive API discovery tool for security testers. Discovers API endpoints from browser traffic, flags risks, exports OpenAPI/Postman.

Umbrion AI Guardrails

5.0

Licensed AI monitor: real-time data exposure warnings, custom keywords, file alerts, redacted JSON export. Activates via license.

SafePrompt - AI Prompt Injection Detector

5.0

Detects hidden text attacks on web pages that manipulate AI assistants like ChatGPT and Claude.