Link Bookmark

Link Bookmark

Overview

Link Bookmark is a lightweight Hermes skill for turning links shared in chat into a clean unread bookmark digest. It is useful for Slack, Discord, Telegram, or any other channel where people drop links that should be collected, summarized, and reviewed later.

The skill uses a simple JSON file as the source of truth. Each channel gets its own bookmark file under ~/.hermes/link_bookmarks/ by default. Hermes reads the file, filters unread items, groups them by broad category, re-numbers them for display, and renders a concise report. Items are marked read only when the user explicitly asks.

This skill intentionally does not require Slack/Discord history APIs. If Hermes cannot search channel history, add links from messages that are delivered to Hermes, from URLs supplied by the user, or from manually edited JSON.

When to Use

Use this skill when the user asks for things like:

• "show bookmarks" / "bookmarks"
• "책갈피 보여줘" / "책갈피"
• "show unread links"
• "summarize unread links"
• "add this link to the bookmark list"
• "mark 1 and 3 as read"
• "1번 읽음 처리해줘"
• "전부 읽음 처리해줘"

Do not use this skill for:

• Browser bookmark synchronization
• Full RSS/news monitoring from external feeds
• Tasks that require live Slack/Discord history access when the gateway does not expose those APIs

Data Location

Recommended default path:

~/.hermes/link_bookmarks/.json

For backward compatibility with older link-report setups, you may also read from:

~/.hermes/link_reports/.json

Use one JSON file per channel/context so read state is independent.

JSON Schema

{
  "channel_id": "example-channel",
  "source": "slack",
  "items": [
    {
      "id": 1,
      "status": "unread",
      "category": "AI·Tools",
      "title": "Example AI Tool",
      "url": "https://example.com",
      "source_type": "web",
      "date": "2026-06-16 09:00",
      "summary": "A concise summary of the link.",
      "key_points": ["Point 1", "Point 2"]
    }
  ],
  "read_items": [],
  "updated_at": "2026-06-16T09:00:00+09:00",
  "notes": "Optional operating notes."
}

Required item fields are id, url, and title. The other fields improve rendering and organization. Keep id stable forever; display numbers are temporary and are re-created on every report.

Report Formatting

Default report format:

:bookmark_tabs: *Unread Link Bookmark*

`AI`

**1. Example AI Tool**  
Added: 2026-06-16  
A concise summary of the link.  
[Link](https://example.com)

Korean report format when the user is using Korean or says 책갈피:

:bookmark_tabs: *읽지 않은 책갈피*

`AI`

**1. Example AI Tool**  
등록일: 2026-06-16  
A concise summary of the link.  
[Link](https://example.com)

Formatting rules:

• Show only unread items.
• Re-number unread items from 1 to N every time, even if underlying stable JSON IDs have gaps.
• Group by broad category.
• Render categories as code labels, e.g. ` AI `.
• Render titles in bold.
• Use [Link](url) labels instead of raw URLs.
• Show the original registration date as Added: YYYY-MM-DD or 등록일: YYYY-MM-DD when available.
• Keep output concise.

Category Normalization

Normalize detailed categories to broad scan-friendly labels by splitting on common separators and keeping the first segment.

Examples:

| Raw category | Display category | | --- | --- | | AI·Tools | AI | | AI·Research/Industry | AI | | Development·Workflow | Development | | Business·Strategy | Business | | 생산성·노트 | 생산성 |

If no category exists, use Other for English output or 기타 for Korean output.

Operating Procedure

Show unread bookmarks

1. Identify the current channel/context ID.
2. Read ~/.hermes/link_bookmarks/.json. If absent and a legacy file exists, read ~/.hermes/link_reports/.json.
3. Filter items where status == "unread" and the stable id is not in read_items.
4. Normalize categories.
5. Group items by category while preserving item order.
6. Re-number displayed items from 1 to N across the whole unread list.
7. Render the clean Markdown report.
8. Do not mark anything read unless the user explicitly asks.

Add a link

1. Extract URL, title, source type, and date from the user message or channel metadata.
2. If web access is available, fetch the URL and write a concise summary.
3. Assign the next stable integer ID: max(existing ids) + 1.
4. Set status to unread.
5. Store a useful category. It can be more detailed than the display category.
6. Update updated_at.
7. Save the JSON with UTF-8 and two-space indentation.

Mark items read

Only mark read when the user explicitly requests it.

1. Treat user-facing numbers as the current displayed unread positions, not stable JSON IDs, unless the user explicitly says by id or raw id.
2. Map display positions back to stable JSON IDs.
3. Add those stable IDs to read_items.
4. Set matching item status to read.
5. Update updated_at.
6. Confirm briefly.

Helper Script

This repository includes scripts/link_bookmark.py for deterministic operations:

python scripts/link_bookmark.py show ~/.hermes/link_bookmarks/my-channel.json
python scripts/link_bookmark.py show ~/.hermes/link_bookmarks/my-channel.json --locale ko
python scripts/link_bookmark.py add ~/.hermes/link_bookmarks/my-channel.json --title "Example" --url "https://example.com" --category "AI·Tools" --summary "Short summary"
python scripts/link_bookmark.py mark-read ~/.hermes/link_bookmarks/my-channel.json 1 3 5
python scripts/link_bookmark.py mark-read ~/.hermes/link_bookmarks/my-channel.json --by-id 42

Common Pitfalls

1. Marking items read just because a report was shown. Showing a report does not mean the user read the links. Mark read only after explicit instruction.

1. Confusing display numbers with stable IDs. User-facing numbers are temporary unread-list positions. Stable IDs stay inside JSON.

1. Depending on Slack history APIs. Hermes gateway sessions may not expose channel history. Use delivered messages, user-provided URLs, or the JSON store.

1. Raw URL spam. Use [Link](url) labels so chat output stays clean.

1. Overly narrow display categories. Store detailed categories if useful, but display broad categories for scanning.

1. Renumbering JSON IDs. Never rewrite stable IDs when items become read. Only display numbers should change.

Verification Checklist

• [ ] JSON file exists for the channel/context or is created on first add
• [ ] Every item has a stable integer id
• [ ] Report includes only unread items
• [ ] Display numbers are sequential from 1 to N
• [ ] Mark-read maps display numbers back to stable IDs
• [ ] Each item shows an added/registration date when available
• [ ] Categories are broad and rendered as code labels
• [ ] Titles are bold and links use [Link](url) labels
• [ ] No item is marked read unless explicitly requested

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: PeterCha90
• Source: PeterCha90/link-bookmark
• License: MIT

Install and usage instructions live in the source repository linked above.