Arcjet
AI agent runtime security platform for detecting threats and enforcing policies.
- Paid· from $25/month
- Open Source
What is Arcjet?
Arcjet is an AI Security tool. AI agent runtime security platform for detecting threats and enforcing policies. Arcjet is a paid tool, starting at $25/month. A free trial of 15 days is available. It is aimed at developers, security teams and compliance officers.
Arcjet is an AI agent runtime security platform that detects threats, enforces policies across actions, prompts, and tool calls, and provides evidence of events. It offers features like prompt injection detection, agent tool-call authorization, and sensitive data redaction.
Built for developers, security teams and compliance officers.
Features
Prompt Injection Detection
Agent Tool-Call Authorization
Sensitive Data Detection and Redaction
Bot and API Abuse Protection
Rate Limiting
SIEM Export
Use cases
- Detect prompt injection attacks in AI agent interactions
- Authorize AI agent tool calls according to organizational policies
- Redact sensitive data from AI agent outputs
- Prevent bot and API abuse through access control
- Implement rate limiting to manage API usage
- Export security event data to SIEM systems for monitoring
Who it's for
Pros & cons
Pros
- Offers comprehensive AI agent runtime security features
- Provides SIEM export for security monitoring
- Includes rate limiting to manage API usage
Cons
- No free plan available; paid plans only
Pricing
Paid — paid plans start at $25/month. Free trial of 15 days available.
| Plan | Price |
|---|---|
| Individual | $25 / month |
| Startup | $299 / month |
| Enterprise | Custom |
Developer & API
Open source· Apache-2.0· 4 stars· 0 forks
Security & compliance
- SOC 2
- Data deletion
As stated on Arcjet's website — not independently verified by AiByts.
FAQ
What is Arcjet?
Arcjet is an AI Security tool. AI agent runtime security platform for detecting threats and enforcing policies. Arcjet is an AI agent runtime security platform that detects threats, enforces policies across actions, prompts, and tool calls, and provides evidence of events. It offers features like prompt injection detection, agent tool-call authorization, and sensitive data redaction.
Is Arcjet free?
No, Arcjet is a paid tool. A free trial is available.
How much does Arcjet cost?
Arcjet offers 3 plans: Individual ($25 / month), Startup ($299 / month) and Enterprise (Custom).
Who should use Arcjet?
Arcjet is built for developers, security teams and compliance officers. Common uses: detect prompt injection attacks in AI agent interactions, authorize AI agent tool calls according to organizational policies, redact sensitive data from AI agent outputs and prevent bot and API abuse through access control.
What does Arcjet integrate with?
Arcjet integrates with Vercel, OpenAI, Anthropic and LangChain.
Is Arcjet open source?
Yes, Arcjet is open source under the Apache-2.0 license.
What are the best alternatives to Arcjet?
Similar tools on AiByts include Axari, Checkmarx, Constellation Gate AI, Suprbox and Koreshield.
Arcjet news & updates
Details are compiled from Arcjet's website and public sources, last verified Oct 7, 2026. Features and pricing change — confirm on the official site before you buy.
Try Arcjet
Paid · from $25/month
Tags
- AI Agent Security
- Prompt Injection Detection
- Data Loss Prevention
- Bot Protection
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