theheavenlyd3mon Notion Cost Tracker
Log API usage costs and model spending to the Notion Cost Tracker. One entry per task/session.
Database
- Name: 💰 Cost Tracker
- Database ID:
95127f7b-030c-4932-8930-c3baab0acac7 - Data source ID:
e891050f-e4f3-4bde-8285-f90809b93f2a
Schema
| Property | Type | Purpose |
|---|---|---|
| Name | Title | Cost entry description |
| Agent | Select | Which agent incurred the cost |
| Cost | Number | USD cost |
| Date | Date | When the cost was incurred |
| Model | Rich_text | Model used (e.g. deepseek/deepseek-v4-flash) |
| Task | Rich_text | Task description |
| Tokens In | Number | Input tokens |
| Tokens Out | Number | Output tokens |
Log Cost via curl
curl -s -X POST "https://api.notion.com/v1/pages" \
-H "Authorization: Bearer $NOTION_API_KEY" \
-H "Notion-Version: 2025-09-03" \
-H "Content-Type: application/json" \
-d '{
"parent": {"database_id": "95127f7b-030c-4932-8930-c3baab0acac7"},
"properties": {
"Name": {"title": [{"text": {"content": "Wiki research run"}}]},
"Agent": {"select": {"name": "cron"}},
"Cost": {"number": 0.12},
"Date": {"date": {"start": "'$(date -u +%Y-%m-%d)'"}},
"Model": {"rich_text": [{"text": {"content": "deepseek/deepseek-v4-flash"}}]},
"Task": {"rich_text": [{"text": {"content": "Researched and updated 3 wiki pages on LLM agent architectures"}}]},
"Tokens In": {"number": 15000},
"Tokens Out": {"number": 4000}
}
}' | jq .
Log via execute_code
from hermes_tools import terminal
import json, datetime
cost = 0.12
tokens_in = 15000
tokens_out = 4000
task = "Wiki research run"
model = "deepseek/deepseek-v4-flash"
payload = {
"parent": {"database_id": "95127f7b-030c-4932-8930-c3baab0acac7"},
"properties": {
"Name": {"title": [{"text": {"content": task[:80]}}]},
"Agent": {"select": {"name": "cron"}},
"Cost": {"number": cost},
"Date": {"date": {"start": datetime.date.today().isoformat()}},
"Model": {"rich_text": [{"text": {"content": model}}]},
"Task": {"rich_text": [{"text": {"content": task[:2000]}}]},
"Tokens In": {"number": tokens_in},
"Tokens Out": {"number": tokens_out}
}
}
result = terminal(f'''curl -s -X POST "https://api.notion.com/v1/pages" \
-H "Authorization: Bearer $NOTION_API_KEY" \
-H "Notion-Version: 2025-09-03" \
-H "Content-Type: application/json" \
-d '{json.dumps(payload)}' ''')
print("Cost logged:", result)
When to Log
- After each cron job run (approximate cost)
- After significant interactive sessions
- At end of day for batch jobs
- Track monthly spend against budget