# Cost Alert

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- **Type:** Skill
- **Install:** `agentstack add skill-hoangsonww-claude-code-agent-monitor-cost-alert`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [hoangsonww](https://agentstack.voostack.com/s/hoangsonww)
- **Installs:** 0
- **Category:** [Databases](https://agentstack.voostack.com/c/databases)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [hoangsonww](https://github.com/hoangsonww)
- **Source:** https://github.com/hoangsonww/Claude-Code-Agent-Monitor/tree/master/plugins/ccam-cost-guard/skills/cost-alert
- **Website:** https://hoangsonww.github.io/Claude-Code-Agent-Monitor/

## Install

```sh
agentstack add skill-hoangsonww-claude-code-agent-monitor-cost-alert
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Cost Alert

Audit the spend guardrails: which rules exist, which have fired, and what tripped them.

## Input

The user provides: **$ARGUMENTS**

This may be empty (review everything), `"unacked"` (only unacknowledged alerts),
or a rule name to focus on.

## Data Sources

| Endpoint | Returns |
|----------|---------|
| `GET /api/alerts/rules` | `{ rules: [{ id, name, rule_type, config, enabled, cooldown_seconds }] }` — the guardrail definitions |
| `GET /api/alerts` | `{ alerts: [{ id, rule_id, rule_name, rule_type, session_id, agent_id, message, details, triggered_at, acked }], total, unacked, limit, offset }` — the fired-alert feed, newest first. `?unacked=true` filters to unacknowledged |

## What the rule types mean

| `rule_type` | `config` | Fires when |
|-------------|----------|------------|
| `token_threshold` | `{ total_tokens }` | A session's cumulative tokens (input + output + cache_read + cache_write) cross the ceiling — the spend-relevant guardrail |
| `event_pattern` | `{ event_type?, tool_name?, summary_contains?, count?, window_minutes? }` | Matching events reach `count` within the window |
| `inactivity` | `{ minutes }` | An active session goes quiet for `minutes` |
| `status_duration` | `{ status, minutes }` | An agent is stuck in `working`/`waiting` for `minutes` |

For cost work, focus on `token_threshold`. Translate its token ceiling to dollars using the blended rate from `/api/pricing/cost` (`total_cost / total_tokens`) so the user sees the alarm in money terms.

## Report Sections

### 1. Configured guardrails
Table from `/api/alerts/rules`: name, type, the human-readable threshold (e.g. `token_threshold → 12,500,000 tokens ≈ $50.0000`), enabled state, cooldown. Flag rules that are `disabled` or have no spend-relevant guardrail at all.

### 2. Fired alerts
Table from `/api/alerts`: rule name, `triggered_at`, scope (session/agent id), `acked`, and the `message`. Lead with the `unacked` count. Honor `"unacked"` input by querying `?unacked=true`.

### 3. What tripped — per alert
For each fired alert, parse `details` and explain in plain terms: e.g. *"session X crossed 12,500,000 tokens (threshold 12,500,000) ≈ $50.12 at current rates — your `token_threshold` budget rule fired."* Tie the observed value back to the rule's config.

### 4. Next steps
Suggest acknowledging stale alerts (`POST /api/alerts/:id/ack` or `/api/alerts/ack-all`), tightening or loosening a threshold, or arming a missing budget rule (point to the `budget-set` skill).

## Output

Markdown tables. Currency as USD to 4 decimal places; token counts with thousands separators. Make the link between each fired alert and the rule that produced it explicit — never report a raw alert without saying which rule tripped and why.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [hoangsonww](https://github.com/hoangsonww)
- **Source:** [hoangsonww/Claude-Code-Agent-Monitor](https://github.com/hoangsonww/Claude-Code-Agent-Monitor)
- **License:** MIT
- **Homepage:** https://hoangsonww.github.io/Claude-Code-Agent-Monitor/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-hoangsonww-claude-code-agent-monitor-cost-alert
- Seller: https://agentstack.voostack.com/s/hoangsonww
- Browse the marketplace: https://agentstack.voostack.com/browse

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