feat: salvage cost tracking and skill scout (#1815)

2026-05-15 13:23:13 +08:00 · 2026-05-12 14:23:46 -04:00
parent ef86329828
commit 65c1502ecd
15 changed files with 422 additions and 19 deletions
--- a/commands/cost-report.md
+++ b/commands/cost-report.md
@@ -0,0 +1,107 @@
+---
+description: Generate a local Claude Code cost report from a cost-tracker SQLite database.
+argument-hint: [csv]
+---
+
+# Cost Report
+
+Query the local cost-tracking database and present a spending report by day,
+project, tool, and session. This command assumes a cost-tracking hook or plugin
+is already writing usage rows to `~/.claude-cost-tracker/usage.db`.
+
+## What This Command Does
+
+1. Check that `sqlite3` is available.
+2. Check that `~/.claude-cost-tracker/usage.db` exists.
+3. Run aggregate queries against the `usage` table.
+4. Present a compact report, or export recent rows as CSV when the argument is
+   `csv`.
+
+## Prerequisites
+
+The database must be populated by a local cost tracker. If the file is missing,
+tell the user the tracker is not set up and suggest installing or enabling a
+trusted Claude Code cost-tracking hook/plugin first.
+
+```bash
+test -f ~/.claude-cost-tracker/usage.db && echo "Database found" || echo "Database not found"
+```
+
+## Summary Query
+
+```bash
+sqlite3 -header -column ~/.claude-cost-tracker/usage.db "
+  SELECT
+    ROUND(COALESCE(SUM(CASE WHEN date(timestamp) = date('now') THEN cost_usd END), 0), 4) AS today_cost,
+    ROUND(COALESCE(SUM(CASE WHEN date(timestamp) = date('now', '-1 day') THEN cost_usd END), 0), 4) AS yesterday_cost,
+    ROUND(COALESCE(SUM(cost_usd), 0), 4) AS total_cost,
+    COUNT(*) AS total_calls,
+    COUNT(DISTINCT session_id) AS sessions
+  FROM usage;
+"
+```
+
+## Project Breakdown
+
+```bash
+sqlite3 -header -column ~/.claude-cost-tracker/usage.db "
+  SELECT project, ROUND(SUM(cost_usd), 4) AS cost, COUNT(*) AS calls
+  FROM usage
+  GROUP BY project
+  ORDER BY cost DESC;
+"
+```
+
+## Tool Breakdown
+
+```bash
+sqlite3 -header -column ~/.claude-cost-tracker/usage.db "
+  SELECT tool_name, ROUND(SUM(cost_usd), 4) AS cost, COUNT(*) AS calls
+  FROM usage
+  GROUP BY tool_name
+  ORDER BY cost DESC;
+"
+```
+
+## Last Seven Days
+
+```bash
+sqlite3 -header -column ~/.claude-cost-tracker/usage.db "
+  SELECT date(timestamp) AS date, ROUND(SUM(cost_usd), 4) AS cost, COUNT(*) AS calls
+  FROM usage
+  GROUP BY date(timestamp)
+  ORDER BY date DESC
+  LIMIT 7;
+"
+```
+
+## CSV Export
+
+If the user asks for `/cost-report csv`, export the most recent usage rows with
+an explicit column list:
+
+```bash
+sqlite3 -csv -header ~/.claude-cost-tracker/usage.db "
+  SELECT timestamp, project, tool_name, input_tokens, output_tokens, cost_usd, session_id, model
+  FROM usage
+  ORDER BY timestamp DESC
+  LIMIT 100;
+"
+```
+
+## Report Format
+
+Format the response as:
+
+1. Summary: today, yesterday, total, calls, sessions.
+2. By project: projects ranked by total cost.
+3. By tool: tools ranked by total cost.
+4. Last seven days: date, cost, call count.
+
+Use four decimal places for sub-dollar amounts. Do not estimate pricing from raw
+tokens in this command; rely on the precomputed `cost_usd` values written by the
+tracker.
+
+## Source
+
+Salvaged from stale community PR #1304 by `MayurBhavsar`.