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APIGen

ApiGen is an open source PHP API documentation generator that automatically produces smart and simple documentation from PHP source code. It supports PHP 7.1+ including all PHP 8.3 features like enums, union types, readonly classes, and intersection types. ApiGen is maintained by the ApiGen GitHub organization and can be installed via Docker, Phar binary, or Composer.

agent ready

Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.

Kin Score

API Evangelist profiles APIGen the way a machine reads it — 42 machine-readable artifacts across 8 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — APIGen scores 54.7/100 (developing), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 54.7/100 · developing
Contract Quality 19.7 / 25
Developer Ergonomics 3.5 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 8.8 / 12
Discoverability 10.0 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
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

How we profile APIGen

Each block below is one kind of artifact we hold for APIGen. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 8

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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

APIGen Connectors API

Configure connections to external data sources.

APIGen Deployments API

Deploy APIs to target environments.

APIGen Endpoints API

Define and manage API endpoints.

APIGen Projects API

Manage API generation projects.

APIGen Schemas API

Define data schemas for APIs.

APIGen Tests API

Create and run automated API tests.

APIGen Tokens API

Manage API authentication tokens.

APIGen Users API

Manage user profiles.

Scroll within the panel for all 8 ·

Open Collections 1

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

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

APIGen API

OPEN COLLECTION

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Apigen Plans Pricing

3 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Apigen Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

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

Features 5

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

PHP Documentation Generation

Automatically generates API documentation from PHP source code with phpDoc support.

Modern PHP Support

Full support for PHP 7.1+ including typed properties, enums, union types, readonly classes, and PHP 8.3 features.

Advanced Type Systems

Supports intersection types, disjunctive normal form types, constructor property promotion, and all PHPStan-supported types.

Flexible Installation

Available via Docker, Phar binary, or Composer for flexible integration into any PHP project workflow.

Template-Based Output

Uses Latte templating for customizable documentation output with built-in CommonMark support.

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

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

Apigen Context

29 classes · 10 properties

JSON-LD

Spectral Rules 2

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

APIGen API Rules

5 rules · 3 warnings

SPECTRAL

APIGen API Rules

17 rules · 4 errors · 12 warnings

SPECTRAL

JSON Schema 4

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

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

APIGen API

14 properties

JSON SCHEMA

APIGen Deployment

13 properties

JSON SCHEMA

APIGen Endpoint

13 properties

JSON SCHEMA

APIGen Project

9 properties

JSON SCHEMA

JSON Structure 4

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Apigen Api Structure

14 properties

JSON STRUCTURE

Apigen Deployment Structure

13 properties

JSON STRUCTURE

Apigen Endpoint Structure

13 properties

JSON STRUCTURE

Apigen Project Structure

9 properties

JSON STRUCTURE

Examples 4

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Apigen Api Example

4 fields

EXAMPLE

Apigen Deployment Example

5 fields

EXAMPLE

Apigen Endpoint Example

5 fields

EXAMPLE

Apigen Project Example

4 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

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

Apigen Authentication

apiKey/http · 2 schemes

SECURITY

Apigen Domain Security

TLSv1.3

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

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

Apigen Agentic Access

39 operations · 23 acting · 1 human-in-the-loop

39 operations · 23 acting

AGENTIC

Use Cases 3

What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.

What developers build with this provider.

PHP Library Documentation

Generate comprehensive API reference documentation for PHP libraries and packages.

CI/CD Documentation Pipeline

Automate API documentation generation as part of continuous integration workflows.

Open Source Project Docs

Create and maintain documentation for open source PHP projects.

Integrations 4

Pre-built integrations with other platforms tell you where this provider already fits in a stack.

Pre-built integrations with other platforms and tools.

Composer

Available as a Composer package for easy installation in PHP projects.

Docker

Official Docker image for containerized documentation generation.

GitHub Actions

Can be integrated into GitHub Actions workflows for automated documentation.

PHPStan

Built on phpstan/phpdoc-parser for comprehensive type system support.

Resources

Every other property we hold for APIGen — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Company 1

The organization behind the API

Other 1

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/apigen · machine-readable index on apis.io