Dev Server
Monitor and auto-fix the development environment. Use when: debugging backend/frontend errors, watching log streams, diagnosing startup failures, or running make dev.
Install
$ agentstack add skill-benja-pauls-serpentstack-dev-server ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-benja-pauls-serpentstack-dev-server) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Dev Server
Starting the Dev Environment
make dev # Starts Postgres, Redis, runs migrations, launches backend + frontend
make dev-docker # Alternative: run everything in DockerBackend: http://localhost:8000 · API docs: http://localhost:8000/api/docs Frontend: http://localhost:5173
If make dev fails, check docker compose ps to verify Postgres is healthy.
Error Detection Patterns
Backend (FastAPI) — Structured JSON Logs
| Pattern | Meaning | Fix | |---|---|---| | "level": "ERROR" | Application error | Read traceback, module, lineno fields | | ModuleNotFoundError | Missing dependency | cd backend && uv add | | sqlalchemy.exc.OperationalError | Database connection failed | Check Postgres is running, migrations are current | | sqlalchemy.exc.ProgrammingError: relation "X" does not exist | Missing migration | cd backend && uv run alembic upgrade head | | pydantic.ValidationError | Schema field mismatch | Compare request payload against Pydantic model | | ImportError: cannot import name 'X' from 'app.models' | Model not exported | Add import to backend/app/models/__init__.py |
Frontend (Vite/React)
| Pattern | Meaning | Fix | |---|---|---| | TS\d{4}: (e.g., TS2345) | TypeScript error | Read file path + line number from message | | [vite] Internal server error | Build failure | Read full error below the message | | Module not found: Can't resolve | Missing package | cd frontend && npm install or add the dependency | | Uncaught Error: | React runtime error | Read component stack trace | | [hmr] Failed to reload | HMR failure (usually syntax) | File path is in the message |
Auto-Fix Workflow
When an error is detected:
- Classify: syntax, type, import, runtime, or database error
- Locate: extract file path and line number from the error output
- Check recent changes:
git diff HEAD~1 -- - Read the file: open at the relevant line, read 20 lines of surrounding context
- Fix: apply the minimal change to resolve the error
- Verify: wait for hot-reload, confirm the error is gone
Verification
make verify # Runs lint + typecheck + test for both backend and frontendSource & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: Benja-Pauls
- Source: Benja-Pauls/SerpentStack
- License: MIT
- Homepage: https://www.npmjs.com/package/serpentstack
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.