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.
npx skills add oborchers/fractional-cto --skill notification-hierarchygit clone --depth 1 https://github.com/oborchers/fractional-ctoWrote 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.
[](https://agentmods.dev/skills/oborchers/fractional-cto/notification-hierarchy)<a href="https://agentmods.dev/skills/oborchers/fractional-cto/notification-hierarchy"><img src="https://agentmods.dev/badge/skills/oborchers/fractional-cto/notification-hierarchy/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.
<a href="https://agentmods.dev/skills/oborchers/fractional-cto/notification-hierarchy"><img src="https://agentmods.dev/badge/skills/oborchers/fractional-cto/notification-hierarchy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00054 | $0.00823 |
| Opus 5.5 | $0.00022 | $0.00329 |
| Sonnet 5.5 | $0.00011 | $0.00165 |
| Haiku 4.5 | $0.00005 | $0.00082 |
Grade A, and why
notification-hierarchy 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Match Message Urgency to Interruption Level
The notification hierarchy is one of the most commonly misapplied patterns in SaaS. IBM Carbon's framework provides the clearest decision guide. Each notification type has a specific purpose — misusing them causes alert fatigue and lowers productivity.
The Hierarchy
From lowest to highest disruption:
1. Inline Messages (Lowest Disruption)
Contextual feedback within a specific UI section. Persists until resolved.
Use for: Validation errors, field-level guidance, status indicators.
2. Toasts
Brief, non-blocking confirmations of completed actions.
Use for: "Item saved," "Email sent," "Record updated."
Rules:
- Auto-dismiss after 3 seconds if they contain no actions
- Persist if they include an undo button or other action
- Never stack more than 4 toasts simultaneously
3. Banners
System-level or product-level notifications not tied to a specific task.
Use for: Maintenance windows, plan limits, degraded service, required actions.
Rules:
- Persist until dismissed
- Sit at the top of the screen
- Not tied to a specific user action
4. Modals (Highest Disruption)
Block all other interaction. The nuclear option.
Use exclusively for:
- Confirming destructive actions (delete, cancel subscription)
- Acknowledging session expiry
- Completing multi-step flows requiring focused attention
Never use modals for: Informational messages, success confirmations, or anything that could be a toast or banner.
Decision Guide
| Scenario | Notification Type |
|---|---|
| Field has a validation error | Inline message |
| User saved a record successfully | Toast (auto-dismiss 3s) |
| User deleted something (with undo) | Toast (persist until dismissed) |
| System maintenance in 30 minutes | Banner |
| User's plan is approaching its limit | Banner |
| User is about to delete their account | Modal |
| Session is about to expire | Modal (with countdown) |
What ships with it
1 file 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.
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.
- 5d ago First seen · 103 lines · 54 tokens per session scan A aba1676f633c
notification-hierarchy is a skill published in the GitHub repository oborchers/fractional-cto (32 stars, last pushed 5d ago), licensed MIT. It adds 54 tokens to every session and 823 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-13.
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