Cost Breakdown
Break down Claude Code costs using the Agent Monitor pricing engine.
Install
npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill cost-breakdown -g -a claude-code -y- Repository
- hoangsonww/Claude-Code-Agent-Monitor1.1k
- Category
- AI and agents
- Updated
- 5d ago
- License
- MIT
- Context cost
- Lightabout 758 tokens
- Runs scripts
- No, instructions only
What it does
Break down Claude Code costs using the Agent Monitor pricing engine. Shows per-model costs (input, output, cache_read, cache_write at $/Mtok rates), per-session costs, daily trends, and compaction baseline token recovery. Use when analyzing spending, comparing model costs, or planning budgets.
Cost Breakdown
Detailed cost analysis from the Agent Monitor's pricing engine.
Input
The user provides: $ARGUMENTS
This may be: "today", "this week", "last 30 days", a session ID, or "budget $50/week".
Data Sources
| Endpoint | Returns |
|---|---|
GET /api/pricing | { pricing: [{ model_pattern, display_name, input_per_mtok, output_per_mtok, cache_read_per_mtok, cache_write_per_mtok }] } |
GET /api/pricing/cost | Total cost: { total_cost, breakdown: [{ model, input_tokens, output_tokens, cache_read_tokens, cache_write_tokens, cost, matched_rule }] } |
GET /api/pricing/cost/{sessionId} | Per-session cost with same breakdown shape |
GET /api/sessions?limit=200 | Sessions list, each includes inline cost field (bulk pricing) |
GET /api/analytics | Token totals (total_input, total_output, total_cache_read, total_cache_write, baselines pre-summed), daily trends |
How costs are calculated
The pricing engine matches model names against model_pattern using SQL LIKE (e.g. claude-sonnet-4-5% matches claude-sonnet-4-5-20250514). Longest pattern wins for specificity. Cost per model:
cost = (input_tokens / 1M) × input_per_mtok
+ (output_tokens / 1M) × output_per_mtok
+ (cache_read_tokens / 1M) × cache_read_per_mtok
+ (cache_write_tokens / 1M) × cache_write_per_mtok
Token counts are effective totals = current + baseline (baselines preserve pre-compaction tokens that would otherwise be lost when the transcript JSONL is rewritten).
Default pricing tiers (seeded on first run)
| Family | Input $/Mtok | Output $/Mtok | Cache Read $/Mtok | Cache Write $/Mtok |
|---|---|---|---|---|
| Opus 4.5/4.6 | $5 | $25 | $0.50 | $6.25 |
| Sonnet 4/4.5/4.6 | $3 | $15 | $0.30 | $3.75 |
| Haiku 4.5 | $1 | $5 | $0.10 | $1.25 |
