ai-spend-tripwirelisted

# AI Spend Tripwire Cost guardrail for the agentic stack. Reads usage data from each provider, projects spend, alerts on anomalies, and can hard-stop runaway loops. ## What it tracks **Anthropic (Claude API + Claude Code):** - `ANTHROPIC_ADMIN_API_KEY` → `/v1/organizations/usage_report/messages` and cost endpoint, polled hourly. - Claude Code local logs at `~/.claude/projects/*/conversations/*.jsonl` parsed via `ccusage` (or its equivalent) for per-session cost breakdown. **OpenAI (Codex CLI + direct):** - Codex JSONL logs at `~/.codex/sessions/*.jsonl` parsed by `ccusage` (which supports both Claude Code and Codex). - `OPENAI_API_KEY` doesn't have a great cost API; rely on session logs + monthly dashboard scrape. **Google (Gemini for nanobanana, etc.):** - Session files at `~/.gemini/tmp/*/chats/session-YYYY-MM-DD.json` - Free tier: 1,000 req/day. Paid: tracked via Google AI Studio dashboard (no public usage API as of May 2026). **OpenRouter (if used as a gateway):** - Native usage endpoint, polled hourly. ## Output and alerts The skill maintains a status JSON at `~/.config/walter-os/spend-status.json`: ```json { "updated_at": "2026-05-03T12:00:00Z", "today_usd": 4.32, "this_month_usd": 71.50, "projected_month_usd": 220.00, "monthly_budget_usd": 250.00, "burn_rate_per_hour": 0.18, "by_provider": { "anthropic": 52.00, "openai": 14.00, "google": 5.50 }, "alerts": [] } ``` Alert tiers: - **Notice** — daily spend > 1.5x trailing