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 9 API contracts indexed on the APIs.io network, including ACL Rules API, Authentication API, Reports API, and 6 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 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.0/100 thin ▬ flat Agent 22/100 agent aware Front door AI 3/6 light self hosted · GPL-3.0 Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Proxy WAF Security Open Source Reverse Proxy API Gateway

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Cybersecurity Management

BC-620

ACL RulesSecurity PoliciesWebsites

POST /api/ACLRuleAPI GET /api/ACLWhiteListAPI POST /api/PolicyGroupAPI GET /api/PolicyRuleAPI

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 31.0/100 · thin

Contract Quality 9.1 / 16

Developer Ergonomics 2.8 / 13

Access Clarity 1.0 / 13

Operational Transparency 2.2 / 8

Contract Governance 2.1 / 8

Discoverability 3.7 / 7

Regulatory Posture 2.5 / 15

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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Contract Quality scores 55.7 — up to +11.1 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/safeline/apis.yml: open an issue on github.com/api-evangelist/safeline to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Network Edge (CDN, networking, peering, edge compute)	undeclared	-	-	-
Cisco DevNet Ecosystem (builders on Meraki, Catalyst, ISE, ThousandEyes, Splunk)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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

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 9

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

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 9

SafeLine API pricing

Not yet checked against SafeLine's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against SafeLine's documentation. All 5 limits →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

SafeLine

SLA

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 — jsonschema 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

OpenAPI

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

JSONStructure

JSONStructure

JSONLDContext

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 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

Releases

Releases

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

License

License

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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
  gated: none
  gated_source:
  - onboarding
  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: '2026-11-06'
  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
- Open-Source
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: Plans
  url: plans/safeline-plans-pricing.yml
- type: RateLimits
  url: rate-limits/safeline-rate-limits.yml
- type: FinOps
  url: finops/safeline-finops.yml
- type: CapabilityMap
  url: capabilities/safeline-capability-edges.yml
  name: SafeLine Business Capability Map
- 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

SafeLine API — frequently asked questions

Does SafeLine have an API?

Yes. APIs.io lists 9 APIs from SafeLine, including SafeLine MCP Server, SafeLine ACL Rules API and SafeLine Authentication API, and 6 more.

Is there an OpenAPI specification for the SafeLine API?

Yes. APIs.io indexes 8 OpenAPI specifications for SafeLine, each linked for download from this page.

How do I authenticate with the SafeLine API?

SafeLine uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Safeline Authentication.

How much does the SafeLine API cost?

APIs.io lists 3 pricing plans for SafeLine, with each plan's price, limits and inclusions under Pricing on this page.

Is the SafeLine API ready for AI agents?

SafeLine has a Kin Score of 31.0 out of 100 (thin) and an Agent Readiness score of 22.3 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/safeline/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/safeline/evidence"

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