AI-Powered API Documentation Tool - Generate, Publish and Maintain in Minutes

Upload an OpenAPI file, Postman collection, or connect Git.

Theneo automatically generates interactive API documentation with code samples, live testing, and built-in CI/CD sync.

AI-Powered Documentation - Upload Once, Ship Instantly

Upload an OpenAPI spec, Postman collection, or GraphQL schema - or connect your Git repository. Theneo automatically generates complete, interactive API documentation in minutes.

• AI-written endpoint and parameter descriptions
• Multi-language code samples (cURL, Python, JS, Go, Java, Ruby, PHP)
• Validated request and response examples
• Built-in Try-it console for live API testing
• Automatic authentication and error documentation

No manual formatting. No repetitive writing. Just clean, production-ready API docs — instantly.

Git-Synced CI/CD - API Docs That Stay Accurate Automatically

Connect GitHub, GitLab, Bitbucket, or your CI pipeline. Every change to your API spec is automatically reflected in your documentation.

• Automatic spec change detection
• Preview deployments before publishing
• Breaking change alerts
• AI-generated changelogs and release notes
• Staging and production publishing with approval workflows

Your docs stay aligned with your code — without manual updates.

Real-Time Collaboration — Engineers, PMs, and Writers in One Workflow

Theneo brings engineers, PMs, and technical writers into one shared workflow.

• Inline comments on endpoints and parameters
• Role-based permissions and approvals
• Version control with diff comparison
• Web editor or Git-based workflow
• Clear ownership and accountability

Review, edit, and ship documentation the same way you ship code.

Public & Private Documentation

Publish developer-facing docs or restrict access internally — all from the same platform.

• Public docs optimized for SEO and adoption
• Private documentation with SSO or invitations
• Partner portals with granular permissions
• Role-based access controls
• Password-protected environments

One system for public developers and private stakeholders.

White-Label Branding

Make your API documentation fully yours.

• Custom logo, colors, and typography
• Custom CSS and JavaScript
• Custom domain (docs.yourcompany.com)
• Light and dark theme support
• Flexible layout options

Your documentation should feel native — not outsourced.

Frequently Asked Questions

Everything you need to know about how Theneo generates and maintains your interactive API reference—automatically and safely.

How do you keep the API reference in sync with our spec?

Connect a Git repo/CI or upload in the editor. On commit, Theneo rebuilds the reference and updates endpoints, navigation, and examples automatically. You can stage changes and approve before publishing.

Can I generate API documentation from an OpenAPI or Swagger spec automatically?

Yes. Theneo is an API documentation generator that automatically creates complete docs from OpenAPI 2.0 and 3.x (Swagger) specifications in YAML or JSON format. Upload your spec file, connect a Git repository, or paste a URL. Theneo parses all endpoints, parameters, request/response schemas, and authentication methods, then uses AI to generate human-quality descriptions and multi-language code samples.

What AI features are included for the API reference?

Theneo’s AI can draft/complete endpoint and parameter descriptions, propose and repair request/response examples, flag missing or inconsistent fields, summarize complex schemas, power semantic search across your docs, and generate changelog/release-note drafts from diffs—so you ship clearer docs faster.

How are versions, deprecations, and changelogs managed?

Maintain multiple versions, mark deprecations with timelines, and auto-generate changelogs from spec diffs. You can bundle updates, schedule releases, and let AI propose human-editable notes for each change.

What is an API reference and why does it matter for developer adoption?

An API reference is a structured technical document that describes every endpoint, method, parameter, request/response format, authentication method, and error code in an API. High-quality API documentation reduces support tickets, accelerates developer onboarding from days to hours, and directly increases API adoption rates.

Does Theneo support interactive API testing in the documentation?

Yes. Theneo includes a built-in API Explorer (Try-it console) that lets developers send real API requests directly from the documentation page. It supports API key, OAuth 2.0, and OIDC authentication, multiple environments, custom headers, and pre-filled sample payloads. API keys and other sensitive values are masked automatically for security.

How does Theneo automatically detect changes in my API and documentation?

Theneo automatically detects changes through CI/CD pipeline integration and web editor deployments, ensuring comprehensive and real-time tracking of all changes to your API and documentation without requiring manual intervention.

How does Theneo detect breaking changes in my API?

It detects changes such as making optional fields required, removing endpoints, modifying parameter types, and changing response structures. Future options for more customized detection will be available.

What types of changes are included in the AI-generated release notes?

Theneo's AI-powered release summaries include added features (new endpoints), updated content, deleted sections, deprecated features, and breaking changes.

Is there a cost associated with using Theneo's changelog features?

No, Theneo's changelog features are completely free, allowing your team to stay informed about all changes without financial barriers.

All of this to increase API usage & adoption 3x times