Good API documentation is essential to developer adoption, but writing and maintaining it is tedious, and docs quickly fall out of sync with the API itself. Theneo, a Y Combinator-backed startup founded in 2021, was built to automate this. The platform ingests an API specification and uses AI to generate clean, well-structured documentation, complete with references, guides, and changelogs, in seconds, dramatically reducing the manual labor traditionally required to produce a high-quality developer experience.
Theneo provides an all-in-one developer portal: API references, tutorials, changelogs, and private customer portals, with real-time collaborative editing so teams can write and review documentation together. As AI becomes a primary consumer of documentation, Theneo has invested in features for the agentic era, including an Ask AI assistant that lets users and agents query the docs conversationally, MCP (Model Context Protocol) support, and automatic generation of llms.txt files that make documentation discoverable and usable by AI tools like ChatGPT and Claude.
The company's positioning, docs that humans and agents ship together, captures a real shift: documentation now serves both human developers and the AI agents that increasingly integrate with and call APIs on their behalf. By making docs machine-readable and AI-queryable by default, Theneo helps API providers stay relevant in workflows where an agent, not a person, may be reading the reference.
Theneo was founded by Maria Doliashvili and Ana Robakidze, with Robakidze serving as CEO, and graduated from Y Combinator. The company has raised early-stage funding from a strong roster of backers including Atlassian Ventures, Y Combinator, Diaspora Ventures, Merus Capital, and Negma Ventures, with its seed round closing in 2023. With this support, Theneo is building toward a future where every API ships documentation that is instantly generated, continuously maintained, and equally usable by people and AI agents.