cost-export

# Cost Export Pulls every `session-*` and `budget-config-*` record from `cost-tracking` and emits in formats consumable by external observability systems. Without this, cost data lives only inside the AgentDB namespace; with it, the same data lights up dashboards. ## When to use - After any cost-track run, to refresh metrics for Grafana / Datadog / Prometheus. - Cron-friendly via `/loop 5m` to keep external dashboards near-real-time. - One-shot to a webhook for ad-hoc reporting (Slack, custom endpoint). ## Steps 1. **Pick a format** — textfile collector for Prometheus / Grafana, or webhook POST for everything else: ```bash # Prometheus node_exporter textfile collector node plugins/ruflo-cost-tracker/scripts/export.mjs --prometheus /var/lib/node_exporter/textfile_collector/cost_tracker.prom # Webhook (POSTs JSON; add auth via env) EXPORT_WEBHOOK_HEADER='Authorization: Bearer $TOKEN' \ node plugins/ruflo-cost-tracker/scripts/export.mjs --webhook https://hooks.example.com/cost-tracker # Stdout JSON (default if no flag) node plugins/ruflo-cost-tracker/scripts/export.mjs ``` 2. **Inspect what's emitted** — Prometheus output includes: ``` cost_tracker_total_usd <gauge> cost_tracker_tier_total_usd{tier="opus|sonnet|haiku"} <gauge> cost_tracker_session_total_usd{session="<8-char>"} <gauge> cost_tracker_session_messages{session="<8-char>"} <counter> cost_tracker_budget_usd <gauge> (if budget configured) cost_tracker_budget_utilization <gauge> (spent / budget) ``` 3. **Webhook payload shape** — the JSON the webhook receives matches the stdout JSON: `{ exportedAt, sessions: [...], budget, totalUsd, byTier }`. Headers may be added via `EXPORT_WEBHOOK_HEADER='K1: V1, K2: V2'` (comma-separated). ## Env overrides | Env | Default | Purpose | |---|---|---| | `EXPORT_NAMESPACE` | `cost-tracking` | Override target namespace | | `EXPORT_WEBHOOK_HEADER` | unset | Comma-separated `K: V` pairs for webhook auth | | `EXPORT_QUIET=1` | unset | Suppress non-error confirmation output | ## Cross-references - `cost-track` — produces the data this skill exports - `cost-budget-check` — the same `cost_tracker_budget_*` metrics are alertable in Prometheus - node_exporter textfile collector docs (Prometheus convention) — drop the `.prom` file in the collector directory and Prometheus picks it up