Arcjet

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.

Arcjet publishes 2 APIs on the APIs.io network: Decide API and Report API. Tagged areas include Security, Rate Limiting, Bot Detection, WAF, and Developer Security.

Arcjet’s developer surface includes authentication, documentation, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

38.2/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessPaidSelf serve

3 APIs

SecurityRate LimitingBot DetectionWAFDeveloper Security

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 38.2/100 · thin

Contract Quality 14.2 / 25

Developer Ergonomics 3.9 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 4.8 / 13

Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 31/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/arcjet: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Arcjet Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: arcjet
url: https://raw.githubusercontent.com/api-evangelist/arcjet/refs/heads/main/apis.yml
name: Arcjet
kind: company
description: 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.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/arcjet.png
tags:
- Security
- Rate Limiting
- Bot Detection
- WAF
- Developer Security
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: arcjet:arcjet-sdks
  name: Arcjet SDKs
  tags:
  - SDK
  - JavaScript
  - TypeScript
  - Python
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.arcjet.com/get-started
  baseURL: https://decide.arcjet.com
  properties:
  - url: https://docs.arcjet.com/get-started
    type: Documentation
  - url: https://github.com/arcjet/arcjet-js
    type: GitHub
  - url: https://www.npmjs.com/package/arcjet
    type: SDKs
  description: 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 Connect/gRPC Decide protocol and the local WebAssembly analysis
    module.
- aid: arcjet:arcjet-decide-api
  name: Arcjet Decide API
  description: The Decide API from Arcjet — 1 operation(s) for decide.
  humanURL: https://docs.arcjet.com/architecture
  baseURL: https://decide.arcjet.com
  tags:
  - Decide
  properties:
  - type: OpenAPI
    url: openapi/arcjet-decide-api-openapi.yml
  - type: Documentation
    url: https://docs.arcjet.com/architecture
  - type: APIReference
    url: https://docs.arcjet.com/reference/nodejs
  - type: PostmanCollection
    url: collections/arcjet.postman_collection.json
  - type: OpenCollection
    url: collections/arcjet.opencollection.json
  - type: GitHub
    url: https://github.com/arcjet/arcjet-js
  - type: Documentation
    url: https://docs.arcjet.com/rate-limiting/concepts
  - type: APIReference
    url: https://docs.arcjet.com/rate-limiting/reference
  - type: Documentation
    url: https://docs.arcjet.com/bot-protection/concepts
  - type: APIReference
    url: https://docs.arcjet.com/bot-protection/reference
  - type: Documentation
    url: https://docs.arcjet.com/email-validation/concepts
  - type: APIReference
    url: https://docs.arcjet.com/email-validation/reference
  - type: Documentation
    url: https://docs.arcjet.com/sensitive-info/concepts
  - type: APIReference
    url: https://docs.arcjet.com/sensitive-info/reference
  - type: Documentation
    url: https://docs.arcjet.com/shield/concepts
  - type: APIReference
    url: https://docs.arcjet.com/shield/reference
- aid: arcjet:arcjet-report-api
  name: Arcjet Report API
  description: The Report API from Arcjet — 1 operation(s) for report.
  humanURL: https://docs.arcjet.com/architecture
  baseURL: https://decide.arcjet.com
  tags:
  - Report
  properties:
  - type: OpenAPI
    url: openapi/arcjet-report-api-openapi.yml
  - type: Documentation
    url: https://docs.arcjet.com/architecture
  - type: APIReference
    url: https://docs.arcjet.com/reference/nodejs
  - type: PostmanCollection
    url: collections/arcjet.postman_collection.json
  - type: OpenCollection
    url: collections/arcjet.opencollection.json
  - type: GitHub
    url: https://github.com/arcjet/arcjet-js
  - type: Documentation
    url: https://docs.arcjet.com/rate-limiting/concepts
  - type: APIReference
    url: https://docs.arcjet.com/rate-limiting/reference
  - type: Documentation
    url: https://docs.arcjet.com/bot-protection/concepts
  - type: APIReference
    url: https://docs.arcjet.com/bot-protection/reference
  - type: Documentation
    url: https://docs.arcjet.com/email-validation/concepts
  - type: APIReference
    url: https://docs.arcjet.com/email-validation/reference
  - type: Documentation
    url: https://docs.arcjet.com/sensitive-info/concepts
  - type: APIReference
    url: https://docs.arcjet.com/sensitive-info/reference
  - type: Documentation
    url: https://docs.arcjet.com/shield/concepts
  - type: APIReference
    url: https://docs.arcjet.com/shield/reference
common:
- type: AgenticAccess
  url: agentic-access/arcjet-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/arcjet-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/arcjet-domain-security.yml
- type: Authentication
  url: authentication/arcjet-authentication.yml
- type: GitHubOrganization
  url: https://github.com/arcjet
- type: LinkedIn
  url: https://www.linkedin.com/company/arcjet
- type: Website
  url: https://arcjet.com
- type: Documentation
  url: https://docs.arcjet.com
- type: Plans
  url: plans/arcjet-plans-pricing.yml
- type: RateLimits
  url: rate-limits/arcjet-rate-limits.yml
- type: FinOps
  url: finops/arcjet-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Arcjet

Kin Score

APIs 3

Arcjet SDKs

Arcjet Decide API

Arcjet Report API

Open Collections 1

Arcjet Decide API

Pricing Plans 1

Arcjet Plans Pricing

Rate Limits 1

Arcjet Rate Limits

FinOps 1

Arcjet Finops

Security Posture 3

Arcjet Authentication

Arcjet Domain Security

Arcjet Vulnerability Disclosure

Agentic Access 1

Arcjet Agentic Access

Resources