arcjet-js — MCP Server by arcjet

by arcjet · MCP Server · ★ 678

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About arcjet-js

Arcjet - JS SDK [Arcjet][arcjet] is the runtime security platform that ships in your AI code. Detect prompt injection, authorize agent tool calls, redact sensitive data, and block bots and abuse. Real-time security building blocks you call inside your app, before an action happens. This is the monorepo containing various [Arcjet][arcjet] open source packages for JS. Why Arcjet? Your app's AI features and agents take real actions, calling tools, reading data, hitting APIs. Arcjet runs inside that code and lets you enforce security on each action in real time, then audit what happened Which package do I need? Arcjet protects two types of entry points. Pick the right path for your use case: When to use

agent-securityai-agentsai-securityapplication-securitybot-detectionllm-securitymcppii-detectionprompt-injection-detectionrate-limiter

Quick Facts

Stars678
Forks30
LanguageTypeScript
CategoryMCP Server
LicenseApache-2.0
Quality Score74.2823530987467/100
Open Issues8
Last Updated2026-08-07
Created2023-11-30
Platformsmcp, node
Est. Tokens~23k

Compatible Skills

These tools work well together with arcjet-js for enhanced workflows:

  • ClawGuard — semantic(0.38)+complementary+rare_topics+same_lang+similar_pop+shared_platform (68%)
  • thomas-security — semantic(0.36)+complementary+same_lang+similar_pop+shared_platform (62%)
  • openguardrails-oss — semantic(0.36)+complementary+same_lang+similar_pop+shared_platform (62%)
  • pasteguard — semantic(0.17)+complementary+rare_topics+same_lang+similar_pop+shared_platform (61%)
  • TrustedExecBench — semantic(0.30)+complementary+same_lang+similar_pop+shared_platform (60%)

arcjet-js alternative? Top 6 similar tools

Looking for a arcjet-js alternative? If you're comparing arcjet-js with other mcp server tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

  • nono by always-further · ⭐ 2.2k

    nono - a capability-based, multiplexing sandbox tool, built for developers - lift'n'shift seamless path to pro

  • Adrian by secureagentics · ⭐ 516

    Open-source runtime AI agent security tool - monitors and controls AI agents, catching malicious tool use, pro

  • hol-guard by hashgraph-online · ⭐ 428

    Open-source antivirus for AI agents: block risky tools, secret access, prompt injection, malicious packages, M

  • agentseal by AgentSeal · ⭐ 156

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  • medusa by Pantheon-Security · ⭐ 952

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  • pipelock by luckyPipewrench · ⭐ 792

    Firewall for AI agents. DLP scanning, SSRF protection, bidirectional MCP scanning, tool poisoning detection, a

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Frequently Asked Questions

What is arcjet-js?

arcjet-js is Runtime security for AI apps and agents: prompt injection detection, tool-call authorization, sensitive-data redaction, bot protection, and rate limiting. Drop it into your JS/TS code.. It is categorized as a MCP Server with 678 GitHub stars.

What programming language is arcjet-js written in?

arcjet-js is primarily written in TypeScript. It covers topics such as agent-security, ai-agents, ai-security.

How do I install or use arcjet-js?

You can find installation instructions and usage details in the arcjet-js GitHub repository at github.com/arcjet/arcjet-js. The project has 678 stars and 30 forks, indicating an active community.

What license does arcjet-js use?

arcjet-js is released under the Apache-2.0 license, making it free to use and modify according to the license terms.

What are the best alternatives to arcjet-js?

The top alternatives to arcjet-js on Agent Skills Hub include nono, Adrian, hol-guard. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.

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