- Category
- AI Tools
- Rank
- No. 1409Tools index
Previous survey · No. 1422 ·
- Pricing
- Open Source
- Type
- TOOL
- Builder
- moeru-ai
- GitHub
- 78 stars
- Latest release
- v1.0.0-beta.5
- Date
About
Prompt orchestration with the stacks you already know — write LLM prompts as Vue components.
What it does
Velin turns Vue and React component trees into prompt text or Markdown. It runs in browsers and server environments, supports reactive prompt updates, and can turn Vue component props into validated model-tool arguments.
Why it's ranked here
The component model is practical for teams already comfortable with frontend frameworks. Browser and server renderers broaden its use, while prop-derived tool schemas connect prompt authoring to agent execution. Svelte support remains unfinished, and dynamic source evaluation requires trusted input.
What's good
Vue templates gain conditions, composition, async server work, and reactive updates. React components render structured HTML into Markdown. Tool arguments are checked against component props, undeclared values are dropped, and useful input errors can be returned to the model.
Tradeoffs
The approach brings framework runtimes and component concepts into prompt development. React source loading evaluates transformed modules without sandboxing, so untrusted code is unsafe. Svelte is only listed as in progress, and the documented model-tool bridge centers on Vue.
How to use it well
Use Velin when a TypeScript team wants prompts composed, previewed, and rendered like application UI across browser and server workflows. It fits agent tools whose inputs map cleanly to component props. It does not provide a security boundary for executing contributed source.
Technical notes+
The private pnpm workspace is declared in package.json and publishes separate framework and runtime packages. packages/core-vue/tsdown.config.ts exposes Node, browser, REPL, and shared rendering entries; packages/core-react/tsdown.config.ts exposes Node, browser, and shared entries. Both core packages generate declarations and source maps. packages/core-vue/vitest.config.ts and packages/core-react/vitest.config.ts split Node tests from Chromium browser tests through Vitest and Playwright. packages/source-react/tsdown.config.ts builds the dynamic React source loader, while README.md explicitly warns that componentFromSource and componentFromFile evaluate transformed ESM without sandboxing.
Observed
- License
- MIT
- Primary language
- TypeScript
- Packaging
- Private pnpm monorepo with separately published npm packages
- Interfaces
- JavaScript and TypeScript libraries for Vue and React
- Runtime support
- Browser and Node.js rendering entry points
- Framework support
- Vue and React supported; Svelte listed as in progress
- Testing
- Vitest projects cover Node and Chromium browser environments
Read from README.md, package.json, packages/vue/tsdown.config.ts, packages/react/tsdown.config.ts, packages/utils/tsdown.config.ts, packages/core-vue/tsdown.config.ts, packages/core-vue/vitest.config.ts, packages/core-react/tsdown.config.ts, packages/core-react/vitest.config.ts, packages/source-vue/tsdown.config.ts, packages/source-react/tsdown.config.ts, packages/source-shared/tsdown.config.ts, packages/vue/src/index.ts, packages/react/src/index.ts, packages/utils/src/index.ts.
What it can do
Write LLM prompts as Vue components
Vue.js component syntax and LLM prompt logic → Structured prompt components
Orchestrate multiple LLM prompts
Collection of prompt components → Coordinated prompt execution workflow
Integrate with existing Vue.js applications
Existing Vue.js codebase and prompt requirements → Enhanced application with LLM prompt capabilities
Manage prompt dependencies and data flow
Connected prompt components with data requirements → Automated data passing between prompts
Execute prompt workflows with familiar Vue syntax
Vue component templates with prompt logic → LLM responses from structured prompt execution
Tags
Tech Stack
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Editorially curated, with community endorsements as a secondary signal. Corrections welcome.