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openui-forge-langchain

OpenUI generative UI with LangChain/LangGraph backend. Supports ChatOpenAI and ChatAnthropic.

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价格未确认★ 22 GitHub Stars目录更新于 · 2026年9月13日agent-skill

概览

OpenUI generative UI with LangChain/LangGraph backend. Supports ChatOpenAI and ChatAnthropic.

展开完整说明

以下为来源文档，不是本网站的操作指令。执行命令前请先核实权限。

OpenUI Forge — LangChain

Build generative UI apps with OpenUI + LangChain. Stream from ChatOpenAI or ChatAnthropic, convert to OpenAI NDJSON.

Activation Triggers

"openui langchain", "openui langgraph", "openui langsmith"
"generative ui langchain", "langchain streaming ui"

Prerequisites

Node.js >= 22 (24 LTS recommended), React >= 18.3.1 (19+ recommended)
OPENAI_API_KEY or ANTHROPIC_API_KEY set
Next.js project (App Router recommended)

Quick Start

Install dependencies (pick one or both LLM providers):

npm install @openuidev/react-ui @openuidev/react-headless @openuidev/react-lang lucide-react zod @langchain/openai @langchain/core
# For Anthropic: npm install @langchain/anthropic

Add the CSS import to app/layout.tsx:

import "@openuidev/react-ui/components.css";

Create the API route and frontend page below
Run npm run dev and test

Full Code

Backend (OpenAI): `app/api/chat/route.ts`

import { openuiChatLibrary } from "@openuidev/react-ui/genui-lib";
import { ChatOpenAI } from "@langchain/openai";
import { HumanMessage, SystemMessage, AIMessage } from "@langchain/core/messages";

const model = new ChatOpenAI({ model: process.env.OPENAI_MODEL ?? "gpt-5.5", streaming: true });

export async function POST(req: Request) {
  const { messages } = await req.json();

  const systemPrompt = openuiChatLibrary.prompt({
    preamble: "You are a helpful assistant that generates interactive UIs.",
  });

  const lcMessages = [
    new SystemMessage(systemPrompt),
    ...messages.map((m: { role: string; content: string }) =>
      m.role === "user" ? new HumanMessage(m.content) : new AIMessage(m.content)
    ),
  ];

  const stream = await model.stream(lcMessages);
  const encoder = new TextEncoder();
  const id = `chatcmpl-${Date.now()}`;

  const readableStream = new ReadableStream({
    async start(controller) {
      for await (const chunk of stream) {
        const text = typeof chunk.content === "string" ? chunk.content : "";
        if (!text) continue;
        const payload = {
          id,
          object: "chat.completion.chunk",
          choices: [{ index: 0, delta: { content: text }, finish_reason: null }],
        };
        controller.enqueue(encoder.encode(`data: ${JSON.stringify(payload)}\n\n`));
      }
      const done = {
        id,
        object: "chat.completion.chunk",
        choices: [{ index: 0, delta: {}, finish_reason: "stop" }],
      };
      controller.enqueue(encoder.encode(`data: ${JSON.stringify(done)}\n\n`));
      controller.enqueue(encoder.encode("data: [DONE]\n\n"));
      controller.close();
    },
  });

  return new Response(readableStream, {
    headers: { "Content-Type": "text/event-stream" },
  });
}

Backend (Anthropic variant): `app/api/chat/route.ts`

Replace the model initialization and import:

import { ChatAnthropic } from "@langchain/anthropic";

const model = new ChatAnthropic({
  model: process.env.ANTHROPIC_MODEL ?? "claude-sonnet-4-6",
  maxTokens: 4096,
  streaming: true,
});

Everything else (message mapping, stream conversion, response) stays identical.

Frontend: `app/chat/page.tsx`

"use client";
import { FullScreen } from "@openuidev/react-ui";
import { openuiChatLibrary } from "@openuidev/react-ui/genui-lib";
import {
  openAIAdapter,
  openAIMessageFormat,
} from "@openuidev/react-headless";

export default function ChatPage() {
  return (
    <FullScreen
      componentLibrary={openuiChatLibrary}
      streamProtocol={openAIAdapter()}
      messageFormat={openAIMessageFormat}
      apiUrl="/api/chat"
    />
  );
}

The backend emits SSE (data: {json}\n\n). Pair it with openAIAdapter() on the frontend. (langGraphAdapter is also exported from @openuidev/react-headless if you stream LangGraph events natively rather than converting to OpenAI shape.)

Component Creation

import { defineComponent } from "@openuidev/react-lang";
import { z } from "zod";

export const MetricCard = defineComponent({
  name: "MetricCard",
  description: "Displays a metric with label, value, and optional trend",
  props: z.object({
    label: z.string().describe("Metric name"),
    value: z.number().describe("Current metric value"),
    trend: z.enum(["up", "down", "flat"]).optional().describe("Trend direction"),
  }),
  component: ({ props }) => (
    <div style={{ padding: 16, border: "1px solid #e5e7eb", borderRadius: 8 }}>
      <div style={{ fontSize: 14, color: "#6b7280" }}>{props.label}</div>
      <div style={{ fontSize: 24, fontWeight: 700 }}>{props.value}</div>
      {props.trend && <span>{props.trend === "up" ? "+" : props.trend === "down" ? "-" : "="}</span>}
    </div>
  ),
});

System Prompt Generation

npx @openuidev/cli generate ./src/lib/library.ts --out src/generated/system-prompt.txt

Validation Checklist

LLM provider API key is set
@langchain/openai or @langchain/anthropic installed
Messages correctly mapped to LangChain message types
Stream chunks converted to OpenAI-compatible SSE with data: prefix
Final chunk has finish_reason: "stop" and ends with data: [DONE]
Frontend uses streamProtocol={openAIAdapter()} and openAIMessageFormat
CSS import in root layout

Error Patterns

Error	Cause	Fix
Empty chunks in stream	LangChain AIMessageChunk content may be empty	Skip chunks where `text` is empty
Type error on messages	Wrong LangChain message class	Map `user` to `HumanMessage`, `assistant` to `AIMessage`
Module not found	Missing LangChain provider package	Install `@langchain/openai` or `@langchain/anthropic`
Stream hangs	Missing `[DONE]` sentinel	Always send final stop chunk and `[DONE]`
CORS error	Cross-origin frontend	Add CORS headers if frontend/backend are split

查看来源 ↗

文件元数据

name: openui-forge-langchain
description: OpenUI generative UI with LangChain/LangGraph backend. Supports ChatOpenAI and ChatAnthropic.
version: 1.2.0
author: OthmanAdi

查看原始文本

---
name: openui-forge-langchain
description: OpenUI generative UI with LangChain/LangGraph backend. Supports ChatOpenAI and ChatAnthropic.
version: 1.2.0
author: OthmanAdi
---

# OpenUI Forge — LangChain

Build generative UI apps with OpenUI + LangChain. Stream from ChatOpenAI or ChatAnthropic, convert to OpenAI NDJSON.

## Activation Triggers

- "openui langchain", "openui langgraph", "openui langsmith"
- "generative ui langchain", "langchain streaming ui"

## Prerequisites

- Node.js >= 22 (24 LTS recommended), React >= 18.3.1 (19+ recommended)
- `OPENAI_API_KEY` or `ANTHROPIC_API_KEY` set
- Next.js project (App Router recommended)

## Quick Start

1. Install dependencies (pick one or both LLM providers):
```bash
npm install @openuidev/react-ui @openuidev/react-headless @openuidev/react-lang lucide-react zod @langchain/openai @langchain/core
# For Anthropic: npm install @langchain/anthropic
```
2. Add the CSS import to `app/layout.tsx`:
```tsx
import "@openuidev/react-ui/components.css";
```
3. Create the API route and frontend page below
4. Run `npm run dev` and test

## Full Code

### Backend (OpenAI): `app/api/chat/route.ts`

```typescript
import { openuiChatLibrary } from "@openuidev/react-ui/genui-lib";
import { ChatOpenAI } from "@langchain/openai";
import { HumanMessage, SystemMessage, AIMessage } from "@langchain/core/messages";

const model = new ChatOpenAI({ model: process.env.OPENAI_MODEL ?? "gpt-5.5", streaming: true });

export async function POST(req: Request) {
  const { messages } = await req.json();

  const systemPrompt = openuiChatLibrary.prompt({
    preamble: "You are a helpful assistant that generates interactive UIs.",
  });

  const lcMessages = [
    new SystemMessage(systemPrompt),
    ...messages.map((m: { role: string; content: string }) =>
      m.role === "user" ? new HumanMessage(m.content) : new AIMessage(m.content)
    ),
  ];

  const stream = await model.stream(lcMessages);
  const encoder = new TextEncoder();
  const id = `chatcmpl-${Date.now()}`;

  const readableStream = new ReadableStream({
    async start(controller) {
      for await (const chunk of stream) {
        const text = typeof chunk.content === "string" ? chunk.content : "";
        if (!text) continue;
        const payload = {
          id,
          object: "chat.completion.chunk",
          choices: [{ index: 0, delta: { content: text }, finish_reason: null }],
        };
        controller.enqueue(encoder.encode(`data: ${JSON.stringify(payload)}\n\n`));
      }
      const done = {
        id,
        object: "chat.completion.chunk",
        choices: [{ index: 0, delta: {}, finish_reason: "stop" }],
      };
      controller.enqueue(encoder.encode(`data: ${JSON.stringify(done)}\n\n`));
      controller.enqueue(encoder.encode("data: [DONE]\n\n"));
      controller.close();
    },
  });

  return new Response(readableStream, {
    headers: { "Content-Type": "text/event-stream" },
  });
}
```

### Backend (Anthropic variant): `app/api/chat/route.ts`

Replace the model initialization and import:

```typescript
import { ChatAnthropic } from "@langchain/anthropic";

const model = new ChatAnthropic({
  model: process.env.ANTHROPIC_MODEL ?? "claude-sonnet-4-6",
  maxTokens: 4096,
  streaming: true,
});
```

Everything else (message mapping, stream conversion, response) stays identical.

### Frontend: `app/chat/page.tsx`

```tsx
"use client";
import { FullScreen } from "@openuidev/react-ui";
import { openuiChatLibrary } from "@openuidev/react-ui/genui-lib";
import {
  openAIAdapter,
  openAIMessageFormat,
} from "@openuidev/react-headless";

export default function ChatPage() {
  return (
    <FullScreen
      componentLibrary={openuiChatLibrary}
      streamProtocol={openAIAdapter()}
      messageFormat={openAIMessageFormat}
      apiUrl="/api/chat"
    />
  );
}
```

> The backend emits SSE (`data: {json}\n\n`). Pair it with `openAIAdapter()` on the frontend. (`langGraphAdapter` is also exported from `@openuidev/react-headless` if you stream LangGraph events natively rather than converting to OpenAI shape.)

## Component Creation

```tsx
import { defineComponent } from "@openuidev/react-lang";
import { z } from "zod";

export const MetricCard = defineComponent({
  name: "MetricCard",
  description: "Displays a metric with label, value, and optional trend",
  props: z.object({
    label: z.string().describe("Metric name"),
    value: z.number().describe("Current metric value"),
    trend: z.enum(["up", "down", "flat"]).optional().describe("Trend direction"),
  }),
  component: ({ props }) => (
    <div style={{ padding: 16, border: "1px solid #e5e7eb", borderRadius: 8 }}>
      <div style={{ fontSize: 14, color: "#6b7280" }}>{props.label}</div>
      <div style={{ fontSize: 24, fontWeight: 700 }}>{props.value}</div>
      {props.trend && <span>{props.trend === "up" ? "+" : props.trend === "down" ? "-" : "="}</span>}
    </div>
  ),
});
```

## System Prompt Generation

```bash
npx @openuidev/cli generate ./src/lib/library.ts --out src/generated/system-prompt.txt
```

## Validation Checklist

- [ ] LLM provider API key is set
- [ ] `@langchain/openai` or `@langchain/anthropic` installed
- [ ] Messages correctly mapped to LangChain message types
- [ ] Stream chunks converted to OpenAI-compatible SSE with `data:` prefix
- [ ] Final chunk has `finish_reason: "stop"` and ends with `data: [DONE]`
- [ ] Frontend uses `streamProtocol={openAIAdapter()}` and `openAIMessageFormat`
- [ ] CSS import in root layout

## Error Patterns

| Error | Cause | Fix |
|-------|-------|-----|
| Empty chunks in stream | LangChain AIMessageChunk content may be empty | Skip chunks where `text` is empty |
| Type error on messages | Wrong LangChain message class | Map `user` to `HumanMessage`, `assistant` to `AIMessage` |
| Module not found | Missing LangChain provider package | Install `@langchain/openai` or `@langchain/anthropic` |
| Stream hangs | Missing `[DONE]` sentinel | Always send final stop chunk and `[DONE]` |
| CORS error | Cross-origin frontend | Add CORS headers if frontend/backend are split |

查看并核实来源

获取价格与运行成本

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许可证: MIT
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已记录技能来源

已记录技能指令路径，不代表本站运行测试、安全保证或兼容性认证。

安装前审查: 避免自动安装

许可证: MIT

Dependency or permission surface needs review
Permission surface may require sandboxing
Low GitHub adoption signal
缺少 AI 审查批准
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
GitHub adoption: 22 GitHub stars
Stars/forks activity: 22 stars, 0 forks; issue activity unavailable in current metadata
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution
Review status: AI review approval is missing

打开完整审计

工具列表来自元数据，并非已测试的兼容性；Agent 提示词是建议的交接方式。

从一个小任务开始

1阅读来源，确认输入、预期输出、依赖和权限。
2先让 Agent 提出计划，批准环境配置和费用，再进行隔离的小规模测试。
3检查输出和变更文件，只报告实际执行结果，并保留来源版本以便复现。

请在来源中核实依赖、API 密钥及第三方费用。公开仓库不代表所有服务免费。

来源与使用须知

已收录静态检查通过

仓库元数据和审核信号仅供参考。受欢迎、已发现来源、成功运行是不同的事实。

来源仓库: OthmanAdi/openui-forge
许可证: MIT
版本: 1.2.0
最近 GitHub 推送: 2026年8月3日
目录更新于: 2026年9月13日
技能指令路径: .agents/skills/openui-forge-langchain/SKILL.md @ 977180d4d3e9

版本来自目录元数据，使用前请核实来源发布记录。

质量

49/100

需审查

信任

56/100

Do not auto-install

审计

67/100

需审查

打开完整审计查看评估报告

Dependency or permission surface needs review
Permission surface may require sandboxing
Low GitHub adoption signal
缺少 AI 审查批准
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
GitHub adoption: 22 GitHub stars
Stars/forks activity: 22 stars, 0 forks; issue activity unavailable in current metadata
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution
Review status: AI review approval is missing

Verified installs: —
结果: —

复制不等于安装。安装数需有成功安装回报，不代表全面的质量保证。

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打开安装 API LLM 文本格式打开 Manifest 自动解析计划

更多详情

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      "AI review approval is missing",
      "Low GitHub adoption signal",
      "Quality score needs review",
      "Permission surface needs review: secrets or environment access, shell or command execution",
      "GitHub adoption: 22 GitHub stars",
      "Stars/forks activity: 22 stars, 0 forks; issue activity unavailable in current metadata",
      "Dependency/runtime risk: command execution surface, credential or environment access",
      "Permission surface: secrets or environment access, shell or command execution"
    ]
  },
  "agent_proven": {
    "version": "agent-proven-v1",
    "score": 0,
    "tier": "unproven",
    "label": "Needs first agent run",
    "summary": "No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.",
    "metrics": {
      "totalOutcomes": 0,
      "successfulOutcomes": 0,
      "failedOutcomes": 0,
      "installAttempts": 0,
      "installSuccessRate": null,
      "successRate": null,
      "recentSuccessRate": null,
      "recentFailureRate": null,
      "riskBlocked": 0,
      "setupRequired": 0,
      "notRelevant": 0,
      "avgOutputQuality": null,
      "avgTimeToUsefulMs": null,
      "productionOutcomes": 0,
      "humanReviewRequired": 0,
      "uniqueAgents": 0,
      "lastOutcomeAt": null
    },
    "signals": [],
    "penalties": [
      "No real agent outcome evidence yet"
    ]
  },
  "audit": {
    "score": 67,
    "risk_level": "needs_review",
    "risk_label": "Needs review",
    "warnings": [
      "Dependency or permission surface needs review",
      "Permission surface may require sandboxing",
      "Low GitHub adoption signal",
      "AI review approval is missing",
      "Quality score needs review",
      "Permission surface needs review: secrets or environment access, shell or command execution",
      "GitHub adoption: 22 GitHub stars",
      "Stars/forks activity: 22 stars, 0 forks; issue activity unavailable in current metadata"
    ]
  },
  "safety_gate": {
    "tier": "blocked",
    "label": "Blocked for auto-install",
    "auto_install_policy": "block",
    "auto_install_allowed": false,
    "human_review_required": true,
    "blocked": true,
    "recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first."
  },
  "quality": {
    "score": 49,
    "label": "Needs review"
  },
  "supply": {
    "track": "Design and creative production",
    "scenario": "Design and creative",
    "maintenance": "2mo since push",
    "risk": "Needs review"
  },
  "alternative_skills": [],
  "do_not_use_when": [
    "teams that need a vendor-supported SLA",
    "production agents without a repository review",
    "Low GitHub adoption signal",
    "High-risk permission hints: Shell or command execution, Secrets or environment access",
    "Dependency or permission surface needs review",
    "Permission surface may require sandboxing",
    "AI review approval is missing",
    "Quality score needs review"
  ],
  "agent_contract": {
    "task_input": "Use openui-forge-langchain in an agent workflow",
    "recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first.",
    "install_policy": "block",
    "minimum_review_before_use": [
      "Trust: 64/100 Manual review",
      "Audit: 67/100 Needs review",
      "Safety: 31/100 Avoid automatic install",
      "Review repository, license, install command, and permission surface before production use."
    ],
    "expected_agent_output": {
      "selected_skill": "othmanadi-openui-forge-langchain (openui-forge-langchain)",
      "install_command": "npx skills add OthmanAdi/openui-forge --skill openui-forge-langchain",
      "risk_summary": "Needs review; Blocked for auto-install; Review before production",
      "verification_result": "Report the smallest successful task, files touched, warnings, and any missing setup."
    }
  },
  "outcome_feedback": {
    "endpoint": "https://www.openagentskill.com/api/agent/outcome",
    "method": "POST",
    "requires_resolve_event_id": true,
    "event_id_source": "Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.",
    "expected_outcomes": [
      "success",
      "failed",
      "not_relevant",
      "blocked_by_risk",
      "setup_required"
    ],
    "payload_template": {
      "event_id": "<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>",
      "skill_slug": "othmanadi-openui-forge-langchain",
      "task": "Use openui-forge-langchain in an agent workflow",
      "agent": "codex",
      "outcome": "success",
      "install_used": true,
      "risk_blocked": false,
      "setup_required": false,
      "task_success": true,
      "output_quality": 4,
      "error_type": null,
      "human_review_required": false,
      "workspace": "sandbox",
      "time_to_useful_ms": 120000,
      "notes": "Report the smallest successful task, setup friction, files touched, and risk notes."
    }
  },
  "endpoints": {
    "web": "https://www.openagentskill.com/skills/othmanadi-openui-forge-langchain",
    "api": "https://www.openagentskill.com/api/agent/skills/othmanadi-openui-forge-langchain",
    "audit": "https://www.openagentskill.com/skills/othmanadi-openui-forge-langchain/audit",
    "eval": "https://www.openagentskill.com/api/agent/evals?slug=othmanadi-openui-forge-langchain&task=Use%20openui-forge-langchain%20in%20an%20agent%20workflow&max_risk=medium",
    "resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20openui-forge-langchain%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
    "receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20openui-forge-langchain%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
    "install": "https://www.openagentskill.com/api/skills/othmanadi-openui-forge-langchain/install",
    "manifest": "https://www.openagentskill.com/api/registry/manifest/othmanadi-openui-forge-langchain"
  }
}

创作者工具

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此列表来自公开来源，维护者认领获批前不会标记为官方。

创作者: OthmanAdi
来源: OthmanAdi/openui-forge
收录方: OpenAgentSkill 社区索引

归属链接指向公开仓库或创作者主页。创作者可认领列表以更新所有权信号。

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这条 Registry 收录列表归属于 OthmanAdi，但尚未标记为官方。认领后可增加已验证所有者信号，使后续发布、安装和审计更新更值得信赖。

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[![Listed on OpenAgentSkill](https://www.openagentskill.com/api/badge/othmanadi-openui-forge-langchain?metric=listed&label=Listed)](https://www.openagentskill.com/skills/othmanadi-openui-forge-langchain?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)
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