# Arcjet

**Canonical:** https://apis.io/providers/arcjet/  
**Website:** https://arcjet.com  
**APIs profiled:** 3

Arcjet is a security-as-code platform for developers, delivering rate limiting, bot detection, email validation, sensitive-information detection, and a Shield WAF as building blocks embedded directly in application code via SDKs. The SDK is the primary interface; it runs a local WebAssembly analysis module and calls Arcjet's Decide service - a Connect/gRPC (protobuf) decision API at decide.arcjet.com - for stateful decisions like rate limiting and advanced bot detection.

## Kin Score — 37.7 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 37.7).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 54.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (3)

- **Arcjet SDKs** — The primary, supported interface to Arcjet. SDKs ship for Node.js, Next.js, Bun, Deno, SvelteKit, NestJS, Remix, Astro, React Router, Fastify, and Python, each wrapping the Conn...
- **Arcjet Decide API** — The Decide API from Arcjet — 1 operation(s) for decide.
- **Arcjet Report API** — The Report API from Arcjet — 1 operation(s) for report.

## Agentic access (1)

- **Arcjet Agentic Access** — 2 operations · 2 acting

## Security (3)

- **Arcjet Authentication** — apiKey · 1 scheme
- **Arcjet Domain Security** — TLSv1.3 · HSTS · DMARC
- **Arcjet Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Arcjet Plans Pricing**

## Tags

Security, Rate Limiting, Bot Detection, WAF, Developer Security

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/arcjet/). Scores are computed from the provider's own public artifacts under a published rubric.