SafeLine website screenshot

SafeLine

SafeLine is an open-source self-hosted Web Application Firewall (WAF) and reverse proxy developed by Chaitin Technology that protects web applications and APIs from attacks including SQL injection, XSS, code injection, OS command injection, SSRF, path traversal, and RCE. With over 180,000 installations protecting more than 1 million websites, SafeLine handles over 30 billion HTTP requests daily. It provides rate limiting, anti-bot defenses, dynamic code protection, and integrates with API gateways including Apache APISIX and Kong. SafeLine exposes a management API on port 9443 and supports MCP server implementations for AI-assisted management.

SafeLine publishes 8 APIs on the APIs.io network, including ACL Rules API, Authentication API, Reports API, and 5 more. Tagged areas include Proxy, WAF, Security, Open-Source, and Reverse Proxy.

The SafeLine catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

SafeLine’s developer surface includes authentication, documentation, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
33.7/100 thin ▬ flat Agent 22/100 agent aware self hosted · GPL-3.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs
ProxyWAFSecurityOpen-SourceReverse ProxyAPI Gateway

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 33.7/100 · thin
Contract Quality 12.2 / 20
Developer Ergonomics 3.4 / 16
Access Clarity 2.5 / 16
Operational Transparency 2.7 / 10
Contract Governance 2.8 / 10
Discoverability 4.7 / 8
Open Source Surface 2.5 / 10
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/safeline: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

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

SafeLine MCP Server

SafeLine provides two MCP (Model Context Protocol) Server implementations for AI-assisted WAF management: a Python MCP Server for tool-based API management and a Go MCP Server f...

SafeLine ACL Rules API

Access control list rules for blocking and allowing traffic

SafeLine Authentication API

Login and session management

SafeLine Reports API

Security report generation and retrieval

SafeLine Security Policies API

Security policy and rule group management

SafeLine SSL Certificates API

SSL/TLS certificate management

SafeLine System API

System configuration and administration

SafeLine Users API

User account and permission management

SafeLine Websites API

Protected website (application) management

Scroll for all 9

Open Collections 10

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

SafeLine Management ACL Rules API

OPEN COLLECTION

SafeLine Management ACL Rules Authentication API

OPEN COLLECTION

SafeLine Management API

OPEN COLLECTION

SafeLine Management ACL Rules Reports API

OPEN COLLECTION

SafeLine Management ACL Rules Security Policies API

OPEN COLLECTION

SafeLine Management ACL Rules SSL Certificates API

OPEN COLLECTION

SafeLine Management ACL Rules System API

OPEN COLLECTION

SafeLine Management ACL Rules Users API

OPEN COLLECTION

SafeLine Management ACL Rules Websites API

OPEN COLLECTION

Scroll for all 10

Pricing Plans 1

Published pricing tiers and plan structures.

Safeline Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Safeline Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Safeline Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Safeline Context

26 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

SafeLine API Rules

5 rules · 4 warnings 1 info

SPECTRAL

SafeLine API Rules

8 rules · 2 errors 3 warnings 3 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

SafeLine ACL Rule

6 properties

JSON SCHEMA

SafeLine Protected Website

9 properties

JSON SCHEMA

JSON Structure 2

JSON Structure definitions describing this provider's data shapes.

Safeline Acl Rule Structure

0 properties

JSON STRUCTURE

Safeline Website Structure

0 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

Safeline Create Acl Rule Example

2 fields

EXAMPLE

Safeline Get Acl Execution Logs Example

2 fields

EXAMPLE

Safeline List Websites Example

2 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Safeline Authentication

apiKey · 1 scheme

SECURITY

Safeline Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Safeline Agentic Access

30 operations · 18 acting · 1 human-in-the-loop

30 operations · 18 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Demo
Demo

Documentation 4

Reference material describing how the API behaves

Documentation
Documentation
 OpenAPI
OpenAPI
 JSONSchema
JSONSchema
 JSONSchema
JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

SpectralRules
SpectralRules
 JSONStructure
JSONStructure
 JSONStructure
JSONStructure
 JSONLDContext
JSONLDContext
 Vocabulary
Vocabulary

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

IssueTracker
IssueTracker
 Releases
Releases

Commercial 1

Pricing, plans, and the legal terms of use

License
License

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: safeline
name: SafeLine
description: SafeLine is an open-source self-hosted Web Application Firewall (WAF) and reverse proxy developed by Chaitin
  Technology that protects web applications and APIs from attacks including SQL injection, XSS, code injection, OS command
  injection, SSRF, path traversal, and RCE. With over 180,000 installations protecting more than 1 million websites, SafeLine
  handles over 30 billion HTTP requests daily. It provides rate limiting, anti-bot defenses, dynamic code protection, and
  integrates with API gateways including Apache APISIX and Kong. SafeLine exposes a management API on port 9443 and supports
  MCP server implementations for AI-assisted management.
type: Index
deliveryModel:
  model: self-hosted
  license: GPL-3.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://waf.chaitin.com/
    status: 301
    note: declared website redirects to https://cyberserval.tech/landing/safeline — a different registrable domain (chaitin.com
      -> cyberserval.tech), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/safeline.png
tags:
- Proxy
- WAF
- Security
- Open-Source
- Reverse Proxy
- API Gateway
tags_raw:
- Proxy
- WAF
- Security
- Open Source
- Reverse Proxy
- API Gateway
url: https://raw.githubusercontent.com/api-evangelist/safeline/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: safeline:mcp-server
  name: SafeLine MCP Server
  description: 'SafeLine provides two MCP (Model Context Protocol) Server implementations for AI-assisted WAF management:
    a Python MCP Server for tool-based API management and a Go MCP Server for high-performance management. These servers expose
    tools for application management, security rule configuration, and attack event analysis.'
  humanURL: https://github.com/chaitin/SafeLine
  tags:
  - WAF
  - MCP
  - Artificial Intelligence
  - Security
  tags_raw:
  - WAF
  - MCP
  - AI
  - Security
  properties:
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-acl-rules-api
  name: SafeLine ACL Rules API
  description: Access control list rules for blocking and allowing traffic
  humanURL: https://waf.chaitin.com/
  tags:
  - ACL Rules
  properties:
  - type: OpenAPI
    url: openapi/safeline-acl-rules-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-authentication-api
  name: SafeLine Authentication API
  description: Login and session management
  humanURL: https://waf.chaitin.com/
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/safeline-authentication-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-reports-api
  name: SafeLine Reports API
  description: Security report generation and retrieval
  humanURL: https://waf.chaitin.com/
  tags:
  - Reports
  properties:
  - type: OpenAPI
    url: openapi/safeline-reports-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-security-policies-api
  name: SafeLine Security Policies API
  description: Security policy and rule group management
  humanURL: https://waf.chaitin.com/
  tags:
  - Security Policies
  properties:
  - type: OpenAPI
    url: openapi/safeline-security-policies-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-ssl-certificates-api
  name: SafeLine SSL Certificates API
  description: SSL/TLS certificate management
  humanURL: https://waf.chaitin.com/
  tags:
  - SSL Certificates
  properties:
  - type: OpenAPI
    url: openapi/safeline-ssl-certificates-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-system-api
  name: SafeLine System API
  description: System configuration and administration
  humanURL: https://waf.chaitin.com/
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/safeline-system-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-users-api
  name: SafeLine Users API
  description: User account and permission management
  humanURL: https://waf.chaitin.com/
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/safeline-users-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
- aid: safeline:safeline-websites-api
  name: SafeLine Websites API
  description: Protected website (application) management
  humanURL: https://waf.chaitin.com/
  tags:
  - Websites
  properties:
  - type: OpenAPI
    url: openapi/safeline-websites-api-openapi.yml
  - type: Documentation
    url: https://docs.waf.chaitin.com/
  - type: GettingStarted
    url: https://docs.waf.chaitin.com/en/getting-started
  - type: GitHubRepository
    url: https://github.com/chaitin/SafeLine
common:
- type: IssueTracker
  url: https://github.com/chaitin/SafeLine/issues
- type: Releases
  url: https://github.com/chaitin/SafeLine/releases
- type: License
  name: GPL-3.0
  url: https://github.com/chaitin/SafeLine/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/safeline-agentic-access.yml
- type: DomainSecurity
  url: security/safeline-domain-security.yml
- type: Authentication
  url: authentication/safeline-authentication.yml
- type: Website
  url: https://waf.chaitin.com/
- type: Documentation
  url: https://docs.waf.chaitin.com/
- type: GitHubOrganization
  url: https://github.com/chaitin/SafeLine
- type: Demo
  url: https://demo.waf.chaitin.com/
- type: OpenAPI
  url: openapi/_original/safeline-management-openapi.yml
- type: SpectralRules
  url: rules/safeline-rules.yml
- type: JSONSchema
  url: json-schema/safeline-website-schema.json
- type: JSONSchema
  url: json-schema/safeline-acl-rule-schema.json
- type: JSONStructure
  url: json-structure/safeline-website-structure.json
- type: JSONStructure
  url: json-structure/safeline-acl-rule-structure.json
- type: JSONLDContext
  url: json-ld/safeline-context.jsonld
- type: Vocabulary
  url: vocabulary/safeline-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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