What API specification formats does Cortex support?

Cortex supports OpenAPI, AsyncAPI, GraphQL, gRPC (Protocol Buffer), and OpenRPC sources.

Which programming languages are supported for SDK generation?

Cortex generates typed SDKs for TypeScript, Python, Go, Java, Kotlin, Ruby, PHP, C#, Rust, C++, and C.

How does Cortex integrate with AI agents?

Cortex generates Model Context Protocol (MCP) servers containing typed tools, API specifications, SDK guides, and project documentation tailored for AI agents.

Is Cortex free and open source?

Yes, Cortex is an open-source tool published under npm packages (@cortex-docs/cli) with its code hosted on GitHub.

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Scheduled launch — Sep 13, 2026

Cortex is listed on AI Kaptan and will enter the daily launch competition on that day. Community upvotes open on launch day.

Developer Tools

Free

Cortex

Open-source API knowledge layer that turns OpenAPI, AsyncAPI, GraphQL, gRPC, and OpenRPC specs into docs, typed SDKs in 11 languages, and MCP servers.

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Rating

Reviews

Upvotes

about 1 hour ago

Listed

API

Open Source

Developer Tools

SDK Generator

Documentation

MCP Server

OpenAPI

GraphQL

gRPC

AsyncAPI

Tool information

Provider

Cortex Docs

Platforms

CLI

Node.js

Linux

macOS

Windows

Languages

TypeScript

Python

Java

Kotlin

Ruby

PHP

Rust

C++

API Available

Yes

Added to directory

about 1 hour ago

Last updated

about 1 hour ago

Rating

Not available

Pricing

Free

About Cortex

What the tool does and who it's for

Cortex is an open-source API knowledge layer that transforms OpenAPI, AsyncAPI, GraphQL, gRPC (Protocol Buffers), and OpenRPC specifications into interactive documentation, typed client SDKs across 11 programming languages, and Model Context Protocol (MCP) servers for AI agents. By unifying multiple API specs and custom Markdown within a single configuration file (`cortex.config.yml`), Cortex allows developer teams to build, serve, and publish API tools, live reference servers, and agentic integrations simultaneously.

Key capabilities

Multi-Specification Support: Merges OpenAPI, AsyncAPI, GraphQL, gRPC (Protobuf), and OpenRPC specs into unified project outputs.

Typed SDK Generation: Generates clients in 11 programming languages including TypeScript, Python, Go, Java, Kotlin, Ruby, PHP, C#, Rust, C++, and C.

MCP Server Creation: Built-in support to create Model Context Protocol (MCP) servers with typed tools and embedded specs for AI agents.

Interactive API Reference: Local and production interactive documentation server (`cortex docs serve`) for REST, WebSocket, GraphQL, and RPC endpoints.

Markdown & Guides Integration: Enriches API references and MCP tools with project documentation, custom guides, and conceptual Markdown pages.

Customizable Eta Templates: Supports sparse Eta template overrides to customize generated SDK, doc, and MCP output code.

CLI Tooling: Commands for configuration initialization (`cortex init`), schema validation (`cortex validate`), generation (`cortex generate`), and dry-running.

Package & Server Publishing: Built-in workflow to publish generated SDK packages and MCP servers directly to language registries and GitHub repositories.

Pricing

Free — plans below

Open Source

Reviews

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