notion-database-watcher

notion-database-watcher is a skill for Claude Code from burin-labs/harn. It costs 18 tokens per session (80 once invoked), scanned A, original, Apache-2.0.

A polling recipe for detecting changes in a Notion database or data source. Polling means checking repeatedly instead of receiving an instant event.

In plain words
What is it for?
Use it to monitor Notion data and send notifications or start review work when database changes are found.
Why use it?
It preserves a stable state key so the watcher can tell new changes from ones it has already processed.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

Good fit Use it to monitor Notion data and send notifications or start review work when database changes are found.

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Install with agentmods
npx agentmods add skills/burin-labs/harn/notion-database-watcher
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add burin-labs/harn --skill notion-database-watcher
Clone the repo
git clone --depth 1 https://github.com/burin-labs/harn

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for notion-database-watcher

README.md
[![agentmods](https://agentmods.dev/badge/skills/burin-labs/harn/notion-database-watcher/github.svg)](https://agentmods.dev/skills/burin-labs/harn/notion-database-watcher)
Your own site
<a href="https://agentmods.dev/skills/burin-labs/harn/notion-database-watcher"><img src="https://agentmods.dev/badge/skills/burin-labs/harn/notion-database-watcher/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for notion-database-watcher

Your own site · 80×15
<a href="https://agentmods.dev/skills/burin-labs/harn/notion-database-watcher"><img src="https://agentmods.dev/badge/skills/burin-labs/harn/notion-database-watcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 80 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00018 $0.00080
Opus 5 $0.00009 $0.00040
Sonnet 5 $0.00004 $0.00016
Haiku 4.5 $0.00002 $0.00008

Measured 9d ago against content hash 8103254c40c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

notion-database-watcher scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

examples/triggers/notion-database-watcher/SKILL.md · 11 lines

What it actually says

Notion database watcher

Keep the poll state key stable once deployed. Customize on_database_change to send notifications or dispatch downstream review work.

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 11 lines · 18 tokens per session scan A 8103254c40c0

Subscribe to this mod's changes

notion-database-watcher is a skill published in the GitHub repository burin-labs/harn (20 stars, last pushed yesterday), licensed Apache-2.0. It adds 18 tokens to every session and 80 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.