{"id":43305111,"url":"https://github.com/langwatch/langwatch-flagsmith-demo","last_synced_at":"2026-02-01T20:14:04.537Z","repository":{"id":326106603,"uuid":"1101228449","full_name":"langwatch/langwatch-flagsmith-demo","owner":"langwatch","description":null,"archived":false,"fork":false,"pushed_at":"2025-11-25T15:50:33.000Z","size":5288,"stargazers_count":0,"open_issues_count":0,"forks_count":1,"subscribers_count":0,"default_branch":"main","last_synced_at":"2025-11-28T21:35:16.566Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"TypeScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/langwatch.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":"AGENTS.md","dco":null,"cla":null}},"created_at":"2025-11-21T11:28:05.000Z","updated_at":"2025-11-25T15:50:37.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/langwatch/langwatch-flagsmith-demo","commit_stats":null,"previous_names":["langwatch/langwatch-flagsmith-demo"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/langwatch/langwatch-flagsmith-demo","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/langwatch%2Flangwatch-flagsmith-demo","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/langwatch%2Flangwatch-flagsmith-demo/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/langwatch%2Flangwatch-flagsmith-demo/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/langwatch%2Flangwatch-flagsmith-demo/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/langwatch","download_url":"https://codeload.github.com/langwatch/langwatch-flagsmith-demo/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/langwatch%2Flangwatch-flagsmith-demo/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28988635,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-01T18:17:03.387Z","status":"ssl_error","status_checked_at":"2026-02-01T18:16:57.287Z","response_time":56,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2026-02-01T20:14:03.987Z","updated_at":"2026-02-01T20:14:04.523Z","avatar_url":"https://github.com/langwatch.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Banking Agent Demo\n\nThis project demonstrates a banking agent built with [Mastra](https://mastra.ai), integrated with [LangWatch](https://langwatch.ai) for monitoring and testing, and [Flagsmith](https://flagsmith.com) for feature flagging.\n\n## Overview\n\nThe agent provides customer support for businesses, with capabilities including:\n- **Deep Research**: Analyze customer history.\n- **Account Management**: Manage transactions, move funds, and understand quarterly results.\n- **Support**: Handle common support issues.\n- **Dispute Resolution**: A feature-flagged tool for handling transaction disputes.\n\n## Tech Stack\n\n- **Framework**: Mastra (TypeScript)\n- **Monitoring \u0026 Testing**: LangWatch\n- **Feature Flags**: Flagsmith\n- **Test Runner**: Vitest\n\n## Setup\n\n1.  **Install Dependencies**:\n    ```bash\n    pnpm install\n    ```\n\n2.  **Environment Variables**:\n    Copy `.env.example` to `.env` and add your API keys (OpenAI, LangWatch, Flagsmith).\n    *Note: The keys are already provided in the `.env` file for this demo.*\n\n3.  **Mastra Setup**:\n    The project is initialized with Mastra.\n\n## Development\n\n### Quick Start ✅\n\nStart the Mastra server:\n\n```bash\npnpx mastra dev\n```\n\nThis starts:\n- 🎮 **Playground UI** at http://localhost:3003 (or http://localhost:4111)\n- 🚀 **Agent API** at `http://localhost:3003/api/agents/bankingAgent/generate`\n- 📊 **Automatic LangWatch tracing**\n\n### Test the API\n\n**Via curl:**\n```bash\ncurl -X POST http://localhost:3003/api/agents/bankingAgent/generate \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\n    \"messages\": [\n      {\"role\": \"user\", \"content\": \"What is my account balance?\"}\n    ]\n  }'\n```\n\n**Via Web UI:**\nOpen `examples/chat.html` in your browser for a beautiful chat interface!\n\n### API Endpoint\n\n```\nPOST http://localhost:3003/api/agents/bankingAgent/generate\n```\n\n**Request:**\n```json\n{\n  \"messages\": [\n    {\"role\": \"user\", \"content\": \"Your message here\"}\n  ]\n}\n```\n\n**Response:**\n```json\n{\n  \"text\": \"Agent response...\",\n  \"usage\": {...},\n  \"steps\": [...]\n}\n```\n\n### Notes\n\n- ✅ **No separate Express server needed** - Mastra handles everything\n- ✅ **Automatic observability** - LangWatch traces are sent automatically\n- ✅ **Conversation context** - Pass the full message history in each request\n- ✅ **Built-in playground** - Test agents visually in the browser\n\n### Testing\n\nWe use **Scenario** (by LangWatch) for end-to-end agent testing.\n\nTo run the scenarios:\n\n```bash\nnpx tsx tests/scenarios/banking_agent.test.ts\n```\n(Adjust path as needed)\n\n### Prompts\n\nPrompts are managed via the LangWatch Prompt CLI.\n\nTo sync prompts:\n```bash\nlangwatch prompt sync\n```\n\nTo create a new prompt:\n```bash\nlangwatch prompt create \u003cprompt_name\u003e\n```\n\n## Features \u0026 Flags\n\n-   **Transaction Dispute**: This feature is controlled by a Flagsmith flag.\n    -   Flag: `transaction_dispute`\n    -   When enabled, the agent can help users dispute transactions.\n\n## Quick Links\n\n- 📘 [API Documentation](./API.md) - Complete API reference\n- 🚀 [Quick Start Guide](./QUICKSTART.md) - Get up and running in 5 minutes\n- 🧪 [Agent Guidelines](./AGENTS.md) - Development best practices\n\n## Project Structure\n\n```\nsrc/\n├── server.ts                    # Express API server (new!)\n├── mastra/\n│   ├── agents/\n│   │   └── banking-agent.ts     # Banking agent implementation\n│   └── tools/\n│       └── banking.ts           # Banking tools (accounts, transactions, etc.)\n├── data/\n│   └── mockData.ts              # Mock customer data\n└── utils/\n    └── flags.ts                 # Flagsmith integration\n\nexamples/\n├── client.ts                    # TypeScript API client example\n└── chat.html                    # Web interface for testing\n\ntests/\n├── scenarios/\n│   ├── banking_agent.test.ts    # Agent behavior scenarios\n│   └── api.test.ts              # API integration tests\n└── evaluations/\n    └── example_eval.ipynb       # Evaluation notebooks\n\nscripts/\n└── test-api.sh                  # API testing script\n```\n\n## 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