ntfy

ntfy is a skill for Claude Code, Codex from JansenAnalytics/claudex. It costs 28 tokens per session (306 once invoked), scanned B, original, MIT.

A notification tool that sends messages to phones and desktops through ntfy, a lightweight push-notification service. Messages can include titles, priorities, tags, and links.

In plain words
What is it for?
Use it for reminders, build alerts, monitoring warnings, task notifications, and messages with a clickable URL.
Why use it?
It lets scripts and automated jobs alert you outside the terminal when something happens or needs attention.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for reminders, build alerts, monitoring warnings, task notifications, and messages with a clickable URL.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jansenanalytics/claudex/ntfy
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 JansenAnalytics/claudex --skill ntfy
Clone the repo
git clone --depth 1 https://github.com/JansenAnalytics/claudex

Made for: Claude Code, Codex.

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 ntfy

README.md
[![agentmods](https://agentmods.dev/badge/skills/jansenanalytics/claudex/ntfy.svg)](https://agentmods.dev/skills/jansenanalytics/claudex/ntfy)
Your own site
<a href="https://agentmods.dev/skills/jansenanalytics/claudex/ntfy"><img src="https://agentmods.dev/badge/skills/jansenanalytics/claudex/ntfy.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 306 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00028 $0.00306
Opus 5 $0.00014 $0.00153
Sonnet 5 $0.00006 $0.00061
Haiku 4.5 $0.00003 $0.00031

Measured 3d ago against content hash 8757b634b8b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

ntfy scanned grade B with 2 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 3d 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -d "MESSAGE" ntfy.sh/TOPIC

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

tags: [push-notifications, ntfy, alerts, curl, reminders]
skills/ntfy/SKILL.md · 39 lines

What it actually says

ntfy Push Notifications

Send notifications to the user's phone/desktop:

# Simple notification
curl -d "MESSAGE" ntfy.sh/TOPIC

# With title and priority
curl -H "Title: TITLE" -H "Priority: high" -d "MESSAGE" ntfy.sh/TOPIC

# With tags/emoji
curl -H "Tags: warning,skull" -d "MESSAGE" ntfy.sh/TOPIC

# With click URL
curl -H "Click: https://example.com" -d "MESSAGE" ntfy.sh/TOPIC

Priority Levels

  • min / low / default / high / urgent
  • urgent bypasses DND on phone

Tags (emoji shortcodes)

Common: warning, white_check_mark, rotating_light, chart_with_upwards_trend, robot

Notes

  • Free tier: 250 messages/day per IP
  • No API key needed for ntfy.sh
  • Topic = channel name (create any name, it's public unless self-hosted)
  • Use a unique/random topic name for privacy
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. 3d ago First seen · 39 lines · 28 tokens per session scan B 8757b634b8b3

Subscribe to this mod's changes

ntfy is a skill published in the GitHub repository JansenAnalytics/claudex (5 stars, last pushed 2mo ago), licensed MIT. It adds 28 tokens to every session and 306 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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