Yaojia Wang
0e78e5b06b
feat: complete phase 5 -- error hardening, frontend, Docker, demo, docs
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Backend:
- ConversationTracker: Protocol + PostgresConversationTracker for lifecycle tracking
- Error handler: ErrorCategory enum, classify_error(), with_retry() exponential backoff
- Wire PostgresAnalyticsRecorder + ConversationTracker into ws_handler
- Rate limiting (10 msg/10s per thread), edge case hardening
- Health endpoint GET /api/health, version 0.5.0
- Demo seed data script + sample OpenAPI spec
Frontend (all new):
- React Router with NavBar (Chat / Replay / Dashboard / Review)
- ReplayListPage + ReplayPage with ReplayTimeline component
- DashboardPage with MetricCard, range selector, zero-state
- ReviewPage for OpenAPI classification review
- ErrorBanner for WebSocket disconnect handling
- API client (api.ts) with typed fetch wrappers
Infrastructure:
- Frontend Dockerfile (multi-stage node -> nginx)
- nginx.conf with SPA routing + API/WS proxy
- docker-compose.yml with frontend service + healthchecks
- .env.example files (root + backend)
Documentation:
- README.md with quick start and architecture
- Agent configuration guide
- OpenAPI import guide
- Deployment guide
- Demo script
48 new tests, 449 total passing, 92.87% coverage
2026-03-31 21:20:06 +02:00
Yaojia Wang
ef6e5ac2be
fix: address security findings in Phase 4 analytics and replay
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- Fix CRITICAL: use parameterized INTERVAL arithmetic (%(days)s * INTERVAL '1 day')
instead of string interpolation inside SQL literal
- Use asyncio.gather() for parallel query execution in get_analytics()
- Add range upper bound (max 365 days) to prevent DoS via full-table scans
- Add thread_id validation (alphanumeric, max 128 chars) in replay API
- Sanitize error messages to not reflect user input
2026-03-31 13:38:09 +02:00
Yaojia Wang
33db5aeb10
feat: complete phase 4 -- conversation replay API + analytics dashboard
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- Replay models: StepType enum, ReplayStep, ReplayPage frozen dataclasses
- Checkpoint transformer: PostgresSaver JSONB -> structured timeline steps
- Replay API: GET /api/conversations (paginated), GET /api/replay/{thread_id}
- Analytics models: AgentUsage, InterruptStats, AnalyticsResult
- Analytics event recorder: Protocol + PostgresAnalyticsRecorder + NoOp
- Analytics queries: resolution_rate, agent_usage, escalation_rate, cost, interrupts
- Analytics API: GET /api/analytics?range=Xd with envelope response
- DB migration: analytics_events table + conversations column additions
- 74 new tests, 399 total passing, 92.87% coverage
2026-03-31 13:35:45 +02:00
Yaojia Wang
a2f750269d
fix: address critical security and code review findings in Phase 3
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- Wire ImportOrchestrator into review_api start_import via BackgroundTasks
- Sanitize docstrings in generated tool code to prevent code injection
- Add Literal["read", "write"] validation for access_type
- Add regex validation for agent_group
- Validate URL scheme (http/https only) in ImportRequest
- Validate LLM output fields (clamp confidence, validate access_type)
- Use dataclasses.replace instead of manual reconstruction in importer
- Expand SSRF blocked networks (Carrier-Grade NAT, IPv4-mapped IPv6, etc.)
- Make _BLOCKED_NETWORKS immutable tuple
- Use yaml.safe_dump instead of yaml.dump
- Fix _to_snake_case for empty strings and Python keywords
2026-03-31 00:28:28 +02:00
Yaojia Wang
a54eb224e0
feat: complete phase 3 -- OpenAPI auto-discovery, SSRF protection, tool generation
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- SSRF protection: private IP blocking, DNS rebinding defense, redirect validation
- OpenAPI fetcher with SSRF guard, JSON/YAML auto-detection, 10MB limit
- Structural spec validator (3.0.x/3.1.x)
- Endpoint parser with $ref resolution, auto-generated operation IDs
- Heuristic + LLM endpoint classifier with Protocol interface
- Review API at /api/openapi (import, job status, classification CRUD, approve)
- @tool code generator + Agent YAML generator
- Import orchestrator (fetch -> validate -> parse -> classify pipeline)
- 125 new tests, 322 total passing, 93.23% coverage
2026-03-31 00:10:44 +02:00
Yaojia Wang
006b4ee5d7
fix: resolve ruff lint errors in Phase 2 code
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- Move intent imports to TYPE_CHECKING block in graph.py (TC001)
- Rename test classes to CapWords convention (N801)
- Fix line length violations across test files (E501)
- Auto-fix import sorting (I001)
2026-03-30 21:44:47 +02:00
Yaojia Wang
1050df780d
feat: complete phase 2 -- multi-agent routing, interrupt TTL, escalation, templates
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- Intent classification with LLM structured output (single/multi/ambiguous)
- Discount agent with apply_discount and generate_coupon tools
- Interrupt manager with 30-min TTL auto-expiration and retry prompts
- Webhook escalation module with exponential backoff retry (max 3)
- Three vertical industry templates (e-commerce, SaaS, fintech)
- Template loading in AgentRegistry
- Enhanced supervisor prompt with dynamic agent descriptions
- 153 tests passing, 90.18% coverage
2026-03-30 21:04:39 +02:00
Yaojia Wang
33488fd634
feat: complete phase 1 -- core framework with chat loop, agents, and React UI
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Backend:
- FastAPI WebSocket /ws endpoint with streaming via LangGraph astream
- LangGraph Supervisor connecting 3 mock agents (order_lookup, order_actions, fallback)
- YAML Agent Registry with Pydantic validation and immutable configs
- PostgresSaver checkpoint persistence via langgraph-checkpoint-postgres
- Session TTL with 30-min sliding window and interrupt extension
- LLM provider abstraction (Anthropic/OpenAI/Google)
- Token usage + cost tracking callback handler
- Input validation: message size cap, thread_id format, content length
- Security: no hardcoded defaults, startup API key validation, no input reflection
Frontend:
- React 19 + TypeScript + Vite chat UI
- WebSocket hook with reconnect + exponential backoff
- Streaming token display with agent attribution
- Interrupt approval/reject UI for write operations
- Collapsible tool call viewer
Testing:
- 87 unit tests, 87% coverage (exceeds 80% requirement)
- Ruff lint + format clean
Infrastructure:
- Docker Compose (PostgreSQL 16 + backend)
- pyproject.toml with full dependency management
2026-03-30 00:54:21 +02:00
