Agent Builder by Thesys
Build AI agents that respond with UI instead of text
Visit website →About
Agent Builder by Thesys is a tool for building AI agents that respond with interface elements, charts, cards, forms, slides, reports, instead of plain text. The agent reasons about a request and renders a suitable UI for the answer.
There are no predefined workflows and no code: a user connects their data, writes instructions that define the agent's behaviour, customises the visual style, and then publishes the agent to share or embed on a site.
It is aimed at teams who want to give people an interactive, visual way to query data or complete a task, without building a custom front end for each internal tool.
AI-assisted draft, human-reviewed before publishing — see how we choose & review tools.
Why we picked it
This made the list for having no predefined workflows at all — an agent reasoning about what UI element fits a given answer, rather than choosing from a fixed template set, is worth naming for a use case that doesn't map cleanly onto "chart" or "form."
Related tools
- 1 Tiden Verifies coding agents built what you asked for — specs as code Trial
- 2 GitGlow Local Git workbench with smart review for your changes and agent edits Freemium
- 3 GitHub Copilot AI coding assistant inside your editor, with a free tier Freemium
- 4 Together Link Run frontier open models in the coding harness you already use Paid
- 5 Octri Turns OpenAPI specs into docs, SDKs in 10 languages, and MCP server Freemium
- 6 FastRouter.ai One OpenAI-compatible API to route across 200+ LLMs with smart failover Freemium