blogwatcher

blogwatcher is a skill for Claude Code from HezaoHezao/poirot. It costs 17 tokens per session (902 once invoked), scanned A, original, MIT.

A tool workflow for tracking blogs and RSS or Atom feeds, which are standard ways for websites to publish article updates. It can discover feeds, scan for new posts, and manage read or unread items.

In plain words
What is it for?
Use it to add blogs, monitor feeds, import OPML subscription lists, scan for updates, and review new articles.
Why use it?
It removes the need to visit each tracked website manually. A single list can show which articles are new and which have already been read.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: built for hermes-agent.

Good fit Use it to add blogs, monitor feeds, import OPML subscription lists, scan for updates, and review new articles.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hezaohezao/poirot/blogwatcher
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 HezaoHezao/poirot --skill blogwatcher
Clone the repo
git clone --depth 1 https://github.com/HezaoHezao/poirot

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 blogwatcher

README.md
[![agentmods](https://agentmods.dev/badge/skills/hezaohezao/poirot/blogwatcher/github.svg)](https://agentmods.dev/skills/hezaohezao/poirot/blogwatcher)
Your own site
<a href="https://agentmods.dev/skills/hezaohezao/poirot/blogwatcher"><img src="https://agentmods.dev/badge/skills/hezaohezao/poirot/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.

agentmods 80×15 button for blogwatcher

Your own site · 80×15
<a href="https://agentmods.dev/skills/hezaohezao/poirot/blogwatcher"><img src="https://agentmods.dev/badge/skills/hezaohezao/poirot/blogwatcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 902 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 6 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 31
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • medium MCP Rug Pull · line 119
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • medium MCP Rug Pull · line 122
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • low Tool Misuse · line 31
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • low Tool Misuse · line 119
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • low Tool Misuse · line 122
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
How audits are shown
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 $0.00017 $0.00902
Opus 5 $0.00009 $0.00451
Sonnet 5 $0.00003 $0.00180
Haiku 4.5 $0.00002 $0.00090

Measured 11d ago against content hash d8a27a344be5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 11d 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.

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
poirot/backend/agents/skill/builtin_skills/research/blogwatcher/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 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.

Prerequisites

blogwatcher-cli must be installed. Pick one method:

# Go install
go install github.com/JulienTant/blogwatcher-cli/cmd/blogwatcher-cli@latest

# 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

# Docker
docker run --rm -v blogwatcher-cli:/data ghcr.io/julientant/blogwatcher-cli scan

All releases: https://github.com/JulienTant/blogwatcher-cli/releases

Verify installation:

blogwatcher-cli --version

When to Use

  • User wants to monitor blog updates
  • User wants to track RSS/Atom feeds
  • User wants to import OPML subscriptions
  • User wants a digest of new articles from tracked blogs

Common Commands

# Add a blog to track
blogwatcher-cli add https://example.com/blog

# Add with explicit feed URL
blogwatcher-cli add https://example.com/blog --feed https://example.com/feed.xml

# Scan for new articles
blogwatcher-cli scan

# List tracked blogs
blogwatcher-cli list

# List unread articles
blogwatcher-cli articles --unread

# Mark article as read
blogwatcher-cli read <article-id>

# Import OPML
blogwatcher-cli import subscriptions.opml

# Export OPML
blogwatcher-cli export > subscriptions.opml

Workflow

Setup (first time)

# Install blogwatcher-cli (see Prerequisites)
# Add blogs to track
blogwatcher-cli add https://blog1.com
blogwatcher-cli add https://blog2.com

# Or import existing OPML
blogwatcher-cli import my-subscriptions.opml

Daily check

# Scan for new articles
blogwatcher-cli scan

# Show unread
blogwatcher-cli articles --unread

# Read an article (marks as read)
blogwatcher-cli read <article-id>

Automated monitoring

Set up a cron job to scan periodically:

Read the full file on GitHub · 136 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.

  1. 11d ago First seen · 136 lines · 17 tokens per session scan A d8a27a344be5

Subscribe to this mod's changes

blogwatcher is a skill published in the GitHub repository HezaoHezao/poirot (217 stars, last pushed 1mo ago), licensed MIT. It adds 17 tokens to every session and 902 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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