Source: https://seerepo.com/r/a2ui-project/a2ui/built Markdown source: https://seerepo.com/r/a2ui-project/a2ui/built.md Description: a2ui is a TypeScript repo built with Flutter, anyio, Lit, Angular, and React. It uses AI through a2ui-agent-sdk, a2ui-core, mcp, openai, and google-adk. # What is a2ui built with? a2ui is a TypeScript repo built with Flutter, anyio, Lit, Angular, and React. It uses AI through a2ui-agent-sdk, a2ui-core, mcp, openai, and google-adk, connects to Google, makes its content with myst-parser, Yams, flutter_markdown_plus, js-yaml, yaml, and 2 more, validates its data with Pydantic, jsonschema, referencing, Zod, com.networknt:json-schema-validator, and 3 more, is tested with pytest-asyncio, Pytest, Vitest, karma-chrome-launcher, karma-jasmine, and 5 more, deploys with logging, and uses MCP. It has 662,704 written lines, with 1,165 test files. Read on November 7, 2026, at commit 07aa6a7. Repository: https://github.com/a2ui-project/a2ui ## Frontend (/) ### The base - **[Flutter](https://seerepo.com/uses/flutter)**: 34 files ### Styles - **furo** - **[mkdocs-material](https://seerepo.com/uses/mkdocs-material)** ### Interface - **video_player**: 1 file ## Backend (/) ### AI - **a2ui-agent-sdk** - **a2ui-core** - **[mcp](https://seerepo.com/uses/mcp)** - **[openai](https://seerepo.com/uses/openai)** - **google-adk**: 11 files ### Services - **[Google](https://seerepo.com/uses/google)**: 5 files · [python/a2ui_adk/src/a2ui/adk/a2a/_rpc.py, line 1](https://github.com/a2ui-project/a2ui/blob/07aa6a72f9a81ec8d1f9461957af90b40cc75761/python/a2ui_adk/src/a2ui/adk/a2a/_rpc.py#L1) ## Support (/) ### The base - **[anyio](https://seerepo.com/uses/anyio)** - **Lit**: 1 file ### Content - **myst-parser** - **Yams**: 4 files - **flutter_markdown_plus**: 1 file ### Validation - **[Pydantic](https://seerepo.com/uses/pydantic)**: 52 files - **[jsonschema](https://seerepo.com/uses/jsonschema)**: 2 files - **[referencing](https://seerepo.com/uses/referencing)**: 2 files - **[Zod](https://seerepo.com/uses/zod)**: 2 files - **com.networknt:json-schema-validator**: 1 file ### Testing - **pytest-asyncio** - **Pytest**: 115 files ### Deploy - **logging**: 3 files ### Tools - **antlr4-python3-runtime** - **mkdocs-include-markdown-plugin** - **mkdocs-mermaid2-plugin** - **mkdocs-redirects** - **Sphinx** - **args**: 2 files - **org.antlr:antlr4-runtime**: 2 files - **antlr4**: 1 file - **packaging**: 1 file ### Other - **org.jetbrains.kotlinx:kotlinx-serialization-json**: 27 files - **meta**: 7 files - **Babel**: 3 files - **com.fasterxml.jackson.core:jackson-databind**: 3 files - **collection**: 2 files - **path**: 2 files - **regex**: 2 files - **intl**: 1 file - **path_parsing**: 1 file - **pyyaml**: 1 file - **url_launcher**: 1 file ## Support (typescript/agents/a2ui_agent) ### Content - **[js-yaml](https://seerepo.com/uses/js-yaml)**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ### Testing - **Vitest**: 55 files ### Other - **path**: 1 file ## Backend (typescript/catalogs/mcp) ### Services - **MCP**: 2 files · [typescript/catalogs/mcp/src/components/mcp_app_bridge.ts, line 33](https://github.com/a2ui-project/a2ui/blob/07aa6a72f9a81ec8d1f9461957af90b40cc75761/typescript/catalogs/mcp/src/components/mcp_app_bridge.ts#L33) ## Support (typescript/catalogs/mcp) ### The base - **Lit**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 7 files - **[Ajv](https://seerepo.com/uses/ajv)**: 1 file ### Testing - **karma-chrome-launcher**: 1 file - **karma-jasmine**: 1 file ### Tools - **karma-esbuild**: 1 file ### Other - **jmespath**: 1 file ## Frontend (typescript/catalogs/vegachart) ### Interface - **vega-embed**: 1 file ## Support (typescript/catalogs/vegachart) ### The base - **Lit**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ### Testing - **jsdom**: 1 file ## Frontend (typescript/core/web_core) ### The base - **[Angular](https://seerepo.com/uses/angular)**: 1 file ## Support (typescript/core/web_core) ### The base - **Lit**: 23 files ### Content - **[js-yaml](https://seerepo.com/uses/js-yaml)**: 5 files ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 45 files - **[zod-to-json-schema](https://seerepo.com/uses/zod-to-json-schema)**: 5 files - **validate-color**: 1 file ### Testing - **jsdom**: 1 file ### Other - **@lit/context**: 2 files - **path**: 2 files - **[Preact](https://seerepo.com/uses/preact)**: 1 file ## Frontend (typescript/renderers/angular) ### The base - **[Angular](https://seerepo.com/uses/angular)**: 63 files ## Support (typescript/renderers/angular) ### Content - **[yaml](https://seerepo.com/uses/yaml)**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 5 files ### Testing - **axe-core**: 1 file - **jsdom**: 1 file - **karma-chrome-launcher**: 1 file - **karma-coverage**: 1 file - **karma-jasmine**: 1 file - **karma-jasmine-html-reporter**: 1 file ### Tools - **@angular/compiler**: 1 file ### Other - **path**: 1 file - **rxjs**: 1 file ## Support (typescript/renderers/lit) ### The base - **Lit**: 25 files ### Content - **[js-yaml](https://seerepo.com/uses/js-yaml)**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 3 files ### Testing - **jsdom**: 1 file ### Other - **@lit/context**: 5 files - **path**: 1 file ## Support (typescript/renderers/markdown-it) ### Content - **[dompurify](https://seerepo.com/uses/dompurify)**: 1 file - **[js-yaml](https://seerepo.com/uses/js-yaml)**: 1 file - **[markdown-it](https://seerepo.com/uses/markdown-it)**: 1 file ### Testing - **jsdom**: 2 files ## Frontend (typescript/renderers/react) ### The base - **[React](https://seerepo.com/uses/react)**: 35 files ## Support (typescript/renderers/react) ### Content - **[js-yaml](https://seerepo.com/uses/js-yaml)**: 1 file - **[markdown-it](https://seerepo.com/uses/markdown-it)**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ### Testing - **Vitest**: 43 files - **Testing Library**: 42 files ### Other - **clsx**: 1 file ## Other repos with a similar stack - [paperclipai/paperclip](https://seerepo.com/r/paperclipai/paperclip/built): Google, MCP, React, OpenAI, jsonschema, Zod, Ajv, yaml, dompurify · [Compare](https://seerepo.com/compare/a2ui-project/a2ui/vs/paperclipai/paperclip) - [apache/superset](https://seerepo.com/r/apache/superset/built): Google, anyio, MCP, React, Pydantic, jsonschema, referencing, Zod, dompurify · [Compare](https://seerepo.com/compare/a2ui-project/a2ui/vs/apache/superset) - [usebruno/bruno](https://seerepo.com/r/usebruno/bruno/built): React, OpenAI, jsonschema, Zod, js-yaml, Ajv, yaml, dompurify, markdown-it · [Compare](https://seerepo.com/compare/a2ui-project/a2ui/vs/usebruno/bruno) - [datawhalechina/hello-agents](https://seerepo.com/r/datawhalechina/hello-agents/built): anyio, MCP, React, OpenAI, Pydantic, jsonschema, dompurify, markdown-it · [Compare](https://seerepo.com/compare/a2ui-project/a2ui/vs/datawhalechina/hello-agents) - [vectorize-io/hindsight](https://seerepo.com/r/vectorize-io/hindsight/built): Google, MCP, React, OpenAI, google-adk, Pydantic, Zod, js-yaml · [Compare](https://seerepo.com/compare/a2ui-project/a2ui/vs/vectorize-io/hindsight) - [agno-agi/agno](https://seerepo.com/r/agno-agi/agno/built): Google, anyio, MCP, React, OpenAI, Pydantic, jsonschema, referencing · [Compare](https://seerepo.com/compare/a2ui-project/a2ui/vs/agno-agi/agno) ## Frequently asked questions ### What language is a2ui written in? a2ui is written in TypeScript, with 662,704 written lines. ### What framework does a2ui use? a2ui is built with Flutter, anyio, Lit, Angular, and React. ### Does a2ui use AI? Yes. a2ui uses AI through a2ui-agent-sdk, a2ui-core, mcp, openai, and google-adk. ### What services does a2ui use? a2ui connects to Google and uses MCP. The proof: [python/a2ui_adk/src/a2ui/adk/a2a/_rpc.py, line 1](https://github.com/a2ui-project/a2ui/blob/07aa6a72f9a81ec8d1f9461957af90b40cc75761/python/a2ui_adk/src/a2ui/adk/a2a/_rpc.py#L1) ### Does a2ui have tests? Yes. a2ui has 1,165 test files and is tested with pytest-asyncio, Pytest, Vitest, karma-chrome-launcher, karma-jasmine, jsdom, axe-core, karma-coverage, karma-jasmine-html-reporter, and Testing Library. ### Which repos have a stack like a2ui's? The ones that share most of its stack: paperclipai/paperclip, apache/superset, and usebruno/bruno. ## What is your repo built with? Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.