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About

HOL Guard is a local-first runtime security layer for AI agents that watches what an AI assistant is about to do and stops risky actions before they happen. It sits between the agent and the computer, evaluating supported tool calls and local artifacts for threats such as secret and credential exposure, destructive commands, prompt-injection-driven actions, malicious or changed packages, risky MCP configuration, and unsafe plugins, skills, hooks, and settings. Known threats can be blocked automatically, while ambiguous actions are paused for user approval so people remain in control. Guard runs entirely on the developer’s machine, works offline, and does not upload files, prompts, or passwords. Local checks typically complete in under 50 milliseconds and require no changes to existing code or routines. It supports coding agents including Claude Code, Cursor, Codex, Gemini CLI, OpenCode, Hermes, and OpenClaw, with tailored integrations that inspect actions before execution.

About

Silmaril is a self-healing prompt injection defense designed to protect AI systems from increasingly complex, multi-step attacks that traditional guardrails fail to stop. It operates by wrapping inference calls and evaluating whether an execution sequence is leading toward a harmful outcome, rather than simply filtering inputs. It uses a multihead classifier that analyzes user intent, application context, and execution states together, enabling it to detect indirect injection, multi-turn attack chains, context poisoning, and tool abuse before damage occurs. Silmaril continuously strengthens its defenses through autonomous threat hunting agents that probe systems, discover vulnerabilities, and generate synthetic training data from real attack scenarios. These insights are used to retrain the model automatically, deploying updated protections in under an hour and propagating anonymized defenses across all deployments.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers and engineering teams in need of a tool to prevent AI coding agents from exposing secrets, executing destructive commands, or performing other risky actions

Audience

AI developers and organizations building agent-based systems who need real-time, adaptive protection against prompt injection and multi-step AI attacks

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$4.99 per month
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

HOL
Founded: 2024
United States
hol.org/guard

Company Information

Simaril
United States
www.silmaril.dev/

Alternatives

Alternatives

nono

nono

Always Further
Operant

Operant

Operant AI
Spawn

Spawn

OpenRouter

Categories

AI Security Supported

Categories

AI Security Supported

Integrations

Claude Code Supported
OpenClaw Supported
Antigravity CLI Supported
Cursor Supported
Gemini CLI Supported
GitHub Supported
GitHub Copilot CLI Supported
Grok Supported
Hermes Agent Supported
Kimi Supported
LangChain Not Supported
OpenAI Not Supported
OpenAI Codex Supported
OpenCode Supported
Pi Agent Supported
Python Not Supported
Slack Supported
TypeScript Not Supported
Vercel Not Supported
ZCode Supported

Integrations

Claude Code Supported
OpenClaw Supported
Antigravity CLI Not Supported
Cursor Not Supported
Gemini CLI Not Supported
GitHub Not Supported
GitHub Copilot CLI Not Supported
Grok Not Supported
Hermes Agent Not Supported
Kimi Not Supported
LangChain Supported
OpenAI Supported
OpenAI Codex Not Supported
OpenCode Not Supported
Pi Agent Not Supported
Python Supported
Slack Not Supported
TypeScript Supported
Vercel Supported
ZCode Not Supported
Claim HOL Guard and update features and information
Claim HOL Guard and update features and information
Claim Simaril and update features and information
Claim Simaril and update features and information