A tool for tracking blogs and RSS or Atom feeds, which are standard update streams published by websites. It discovers feeds, checks for new articles, and keeps read and unread status.

Use it to monitor blogs, import an OPML feed list, discover feeds from websites, and manage articles you have or have not read.

It saves you from checking many websites individually and helps you notice new posts as they appear.

blogwatcher — Skill for Claude Code and Codex by cyborg-garden

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 cyborg-garden/hermes-agent-mt --skill blogwatcher

Clone the repo

git clone --depth 1 https://github.com/cyborg-garden/hermes-agent-mt

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/cyborg-garden/hermes-agent-mt/blogwatcher/github.svg)](https://agentmods.dev/skills/cyborg-garden/hermes-agent-mt/blogwatcher)

Your own site

<a href="https://agentmods.dev/skills/cyborg-garden/hermes-agent-mt/blogwatcher"><img src="https://agentmods.dev/badge/skills/cyborg-garden/hermes-agent-mt/blogwatcher/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/cyborg-garden/hermes-agent-mt/blogwatcher"><img src="https://agentmods.dev/badge/skills/cyborg-garden/hermes-agent-mt/blogwatcher.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 1,754 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin 94% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00018	$0.01754
Opus 5.5	$0.00007	$0.00702
Sonnet 5.5	$0.00004	$0.00351
Haiku 4.5	$0.00002	$0.00175

Measured 5d ago against content hash 5f77f5d2e040, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

blogwatcher scanned grade A with 1 finding 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.

Makes network callslowCapability

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

- **Binary (Linux amd64):** `curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_amd64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli`

Origin

This is a copy

94% identical to blogwatcher — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

optional-skills/research/blogwatcher/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blogwatcher

Track blog and RSS/Atom feed updates with the blogwatcher-cli tool. Supports automatic feed discovery, HTML scraping fallback, OPML import, and read/unread article management.

Working with Hermes tools (read this first)

blogwatcher-cli is the feed database; Hermes tools do the automation around it:

Recurring watch — use the cronjob tool's monitor field, not a bare schedule. monitor runs a script each tick and only wakes the agent when output changes: set it to a script that runs blogwatcher-cli scan >/dev/null 2>&1 && blogwatcher-cli articles (deterministic output; new articles = changed output = agent wakes with the diff injected). Unchanged ticks cost zero LLM calls. Set deliver to route digests to a chat/channel; add continuity: true so consecutive digests can dedupe.
Reading an article the user asks about: web_extract([url]) on the article URL from blogwatcher-cli articles — do not re-scrape by hand.
One-off "watch this page for changes" without feed semantics: skip this skill; the cronjob tool's monitor field accepts an http(s) URL directly.
One-off read of a feed or a site's latest posts, nothing to install: the bundled rss-feeds skill (scripts/feed.py read URL); blogwatcher earns its install when you track many feeds with read/unread state.
Company/competitor tracking with analysis and citations: prefer the competitor-news-monitor skill; blogwatcher is the lighter raw-feed layer it can sit on.

Installation

Pick one method:

Go: go install github.com/JulienTant/blogwatcher-cli/cmd/blogwatcher-cli@latest
Docker: docker run --rm -v blogwatcher-cli:/data ghcr.io/julientant/blogwatcher-cli
Binary (Linux amd64): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_amd64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (Linux arm64): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_arm64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (macOS Apple Silicon): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_darwin_arm64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (macOS Intel): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_darwin_amd64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli

Read the full file on GitHub · 148 lines

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.

5d ago Changed · +10 lines 5f77f5d2e040
1mo ago First seen · 138 lines · 18 tokens per session scan A b85be5a9b86b

Subscribe to this mod's changes

blogwatcher is a skill published in the GitHub repository cyborg-garden/hermes-agent-mt (14 stars, last pushed yesterday), licensed MIT. It adds 18 tokens to every session and 1,754 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). It is 94% identical to blogwatcher, differing in 0 lines, and is treated as a copy.

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