Argus server

Python MCP + FastAPI server. NetBox source-of-truth tools for coding agents and the Argus web dashboard. See the top-level README and docs/ARCHITECTURE.md.

Install

python -m venv .venv && source .venv/bin/activate
pip install -e ".[dev]"

Configure

Copy .env.example to .env (or export the vars):

NETBOX_URL=https://netbox.lan
NETBOX_TOKEN=<netbox api token>
NETBOX_VERIFY_SSL=true
HTTP_HOST=0.0.0.0
HTTP_PORT=8080

# Optional — all default to off; see .env.example for the full list.
HTTP_TOKEN=                  # bearer token for /api + /webhooks (unset = open)
NETBOX_WEBHOOK_SECRET=       # verify NetBox X-Hook-Signature HMAC on /webhooks (unset = off)
SCHEDULE_INTERVAL=0          # scheduled drift loop: seconds between cycles (0 = off)
SCHEDULE_COLLECTOR=unifi     # collector the scheduled drift cycle runs
ALERT_WEBHOOK_URL=           # Slack-compatible webhook; alerts on detected drift
NETBOX_TENANT=               # shared-instance: stamp this tenant on objects reconcile creates (unset = single-tenant)

If unset, tools return a clear "NetBox not configured" message instead of erroring.

Run

argus-mcp     # MCP server over stdio (for Claude Code etc.)
argus-http    # FastAPI HTTP server on :8080 (for the web app + webhooks)

argus-maint-mcp  # separate maintenance MCP surface — release preview/verify (devtools; read-only)

The HTTP server also:

• receives NetBox webhooks at POST /webhooks/netbox — it classifies and structured-logs each change event (observability only; no discovery or reconcile is triggered yet). Set NETBOX_WEBHOOK_SECRET to verify NetBox's X-Hook-Signature HMAC (HMAC-SHA512 of the raw body); a missing or mismatched signature is rejected 401 (unset leaves verification off).
• runs an optional scheduled drift loop — set SCHEDULE_INTERVAL (seconds) and Argus discovers + diffs on that interval, read-only (never apply). The latest outcome is served at GET /api/drift/status, and setting ALERT_WEBHOOK_URL POSTs a Slack-compatible alert when drift is found.
• gates /api + /webhooks behind a bearer token when HTTP_TOKEN is set (/health stays public); unset leaves the API open for local/dev use.

Examples

Enable API auth, then call /api/* with the bearer token:

export HTTP_TOKEN="$(openssl rand -hex 32)"
argus-http
curl -H "Authorization: Bearer $HTTP_TOKEN" http://localhost:8080/api/devices

Enable scheduled drift detection (every 5 min) with an optional Slack alert, then read the latest outcome:

export SCHEDULE_INTERVAL=300                                    # 0 = off
export SCHEDULE_COLLECTOR=unifi
export ALERT_WEBHOOK_URL="https://hooks.slack.com/services/…"   # optional
argus-http
curl http://localhost:8080/api/drift/status

Install from PyPI (the published distribution is argus-netbox; the import package stays argus and the console scripts are argus-mcp / argus-http):

pip install argus-netbox
argus-http     # or argus-mcp

Container images are published to GHCR — see the top-level README's Published artifacts.

Develop

ruff check src tests
mypy src           # must pass CI, same as ruff
pytest -v          # offline — NetBox is mocked

Tools