Arcjet
Ship secure agents. Not security incidents.
United States · Founded 2024 · $11.9M raised
- Employees
- 1–10
- Founded
- 2024
- Business Model
- B2B
- Website
- arcjet.com
- Total Funding
- $11.9M
- Last Round
- $8.3M Series AOct 2025
- Rounds
- 2
About
Arcjet is a developer-first security platform that embeds runtime protection directly into application code. It provides a suite of composable security components including bot detection, rate limiting, email validation, form spam prevention, PII detection, and WAF-style attack protection. Arcjet integrates natively with Next.js, Node.js, Bun, SvelteKit, and modern deployment platforms like Vercel and Netlify. Its local-first, WebAssembly-powered engine evaluates security policies inline within the application without adding network latency. The platform has expanded into AI security with AI budget controls, tool authorization for AI agents, and prompt injection protection. Arcjet raised seed funding from Andreessen Horowitz in September 2024.
Summary
Arcjet is a Cybersecurity company based in United States, founded in 2024. It has raised $11.9M in total across 2 rounds, most recently a $8.3M Series A round in Oct 2025. Investors include Plural, Andreessen Horowitz and Seedcamp.
Tech & App Stack
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Funding History
Oct 2025
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Funding: Seed through Series A. Amounts, valuations, and investors where available.
Investors
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