Arcjet is a developer security layer that blocks prompt injection, authorizes tool calls, redacts PII and stops bots for AI agents and web apps. Offered as SDKs for JavaScript, Python and Go.
Builder’s Brief
Arcjet is a security tool on FalcoScan. Runtime security SDK for AI agents and apps: prompt injection, bots, PII. FalcoScan rates Arcjet as high opportunity, a open market, and low wrapper risk. Momentum: stable. Arcjet is founded in 2023. Pricing: Freemium from $25/mo.
Market position · Security
How Arcjet compares in Security
Arcjet has high opportunity and sits in the middle third of 347 live Security tools on FalcoScan. Across Security, the average opportunity score is 70 and the average saturation score 33. FalcoScan rates Arcjet's own market position as open. 121 of the 347 operating Security tools have hot momentum, and FalcoScan has recorded 1 shutdown in the category.
Arcjet has a free tier, with paid plans from $25 a month.
What are the best alternatives to Arcjet?
The closest alternatives to Arcjet that are still running, matched on the AI capabilities, uses and audience they share, are Koreshield, MIRA, AIM Intelligence, Airia, and Hackuity.
Is Arcjet still operating?
Yes. FalcoScan's operating checks list Arcjet as active.
Where is Arcjet based?
Arcjet is headquartered in San Francisco, United States.
Does Arcjet have an API?
Yes. Arcjet offers an API.
How do I sign in to Arcjet?
Sign in on Arcjet's own website, arcjet.com. FalcoScan reviews Arcjet but does not run its accounts, so logins, passwords and billing are handled by Arcjet directly.