{"id":51459611,"url":"https://github.com/vectorleap-pulse/portfolio-research-agent-backend","last_synced_at":"2026-07-06T04:01:49.359Z","repository":{"id":356743451,"uuid":"1233874064","full_name":"vectorleap-pulse/portfolio-research-agent-backend","owner":"vectorleap-pulse","description":null,"archived":false,"fork":false,"pushed_at":"2026-05-09T19:53:58.000Z","size":9138,"stargazers_count":1,"open_issues_count":0,"forks_count":1,"subscribers_count":0,"default_branch":"main","last_synced_at":"2026-05-09T21:33:19.262Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Python","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/vectorleap-pulse.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":null,"dco":null,"cla":null}},"created_at":"2026-05-09T13:16:19.000Z","updated_at":"2026-05-09T19:54:02.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/vectorleap-pulse/portfolio-research-agent-backend","commit_stats":null,"previous_names":["alpha5611331/portfolio-research-agent-backend","vectorleap-pulse/portfolio-research-agent-backend"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/vectorleap-pulse/portfolio-research-agent-backend","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vectorleap-pulse%2Fportfolio-research-agent-backend","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vectorleap-pulse%2Fportfolio-research-agent-backend/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vectorleap-pulse%2Fportfolio-research-agent-backend/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vectorleap-pulse%2Fportfolio-research-agent-backend/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/vectorleap-pulse","download_url":"https://codeload.github.com/vectorleap-pulse/portfolio-research-agent-backend/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vectorleap-pulse%2Fportfolio-research-agent-backend/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":35177220,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-07-06T02:00:07.184Z","response_time":106,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"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":"2026-07-06T04:01:48.572Z","updated_at":"2026-07-06T04:01:49.349Z","avatar_url":"https://github.com/vectorleap-pulse.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Research Agent - Backend\n\nFastAPI + LangGraph multi-agent backend for the [AI Research Command Center](https://github.com/vectorleap-pulse/portfolio-research-agent).\n\n![Demo](images/demo.gif)\n\n## Repositories\n\n| | Link |\n|---|---|\n| Main | [portfolio-research-agent](https://github.com/vectorleap-pulse/portfolio-research-agent) |\n| Backend (this) | [portfolio-research-agent-backend](https://github.com/vectorleap-pulse/portfolio-research-agent-backend) |\n| Frontend | [portfolio-research-agent-frontend](https://github.com/vectorleap-pulse/portfolio-research-agent-frontend) |\n\n## Stack\n\n| Layer           | Technology                                                              |\n| --------------- | ----------------------------------------------------------------------- |\n| API             | FastAPI + Uvicorn                                                       |\n| Agent framework | LangGraph `StateGraph`                                                |\n| LLM             | `langchain-openai` (`ChatOpenAI`) - OpenAI + Groq via `base_url` |\n| Web search      | Tavily Python client                                                    |\n| Streaming       | WebSocket + LangGraph `.astream_events()`                             |\n| Validation      | Pydantic v2 + pydantic-settings                                         |\n| Package manager | uv                                                                      |\n| Linter          | Ruff                                                                    |\n| Tests           | pytest + pytest-asyncio                                                 |\n\n## Prerequisites\n\n- Python 3.12+\n- [uv](https://docs.astral.sh/uv/)\n- API keys: OpenAI, Groq, Tavily\n\n## Setup\n\n```bash\nuv sync\ncp .env.example .env  # fill in your keys\n```\n\n## Environment Variables\n\n```env\nOPENAI_API_KEY=sk-...\nGROQ_API_KEY=gsk_...\nTAVILY_API_KEY=tvly-...\nLLM_PROVIDER=openai\nLLM_MODEL=gpt-4o-mini\n```\n\n## Run\n\n```bash\nuv run python -m app.main\n```\n\n## API\n\n```\nPOST   /api/research          Submit query → returns session_id\nGET    /api/research/{id}     Get full session result\nGET    /api/sessions          List past sessions\nDELETE /api/sessions/{id}     Delete session\n\nWS     /ws/{session_id}       Real-time agent event stream\n```\n\n### WebSocket Event Schema\n\n```json\n{\n  \"event\": \"PLAN_CREATED | SEARCH_DONE | SOURCES_COLLECTED | SUMMARY_CHUNK | SUMMARY_DONE | REPORT_CHUNK | REPORT_DONE | ERROR\",\n  \"session_id\": \"uuid\",\n  \"timestamp\": \"ISO-8601\",\n  \"agent\": \"planner | researcher | summarizer | synthesizer\",\n  \"subtopic\": \"optional string\",\n  \"data\": {}\n}\n```\n\n## Agent Pipeline\n\n```\nSTART → planner → [Send × N subtopics] → researcher (×N, parallel)\n                                              ↓ (merge)\n                                          summarizer\n                                              ↓\n                                          synthesizer → END\n```\n\nEach Researcher node runs a tool-calling loop with one LangChain tool:\n\n- `tavily_search` - web search via Tavily API\n\n## Development\n\n```bash\n# Lint + format\nuv run ruff check .\nuv run ruff format .\n\n# Tests\nuv run pytest\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvectorleap-pulse%2Fportfolio-research-agent-backend","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fvectorleap-pulse%2Fportfolio-research-agent-backend","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvectorleap-pulse%2Fportfolio-research-agent-backend/lists"}