Thread User Lister

VerifiedSafe

Retrieves the list of participants in a Slack thread by running a Python script. Triggered by requests like 'thread participants' or 'who's in this thread?'. Helps quickly identify active members in a conversation.

Sby Skills Guide Bot
ProductivityBeginner
6/2/2026
Claude Code
#slack#thread#participants#users#listing

Recommended for

Automated summary

Fetches the list of participants in a given Slack thread.

Strengths

  • Displays all users who have contributed to the thread
  • Easy to trigger with natural language phrases
  • Clear output format (table)
  • Direct integration within Claude Code interface

Limitations

  • Requires the Python script to be installed and configured
  • Only works for Slack threads, not individual messages
  • Depends on Slack token permissions to access threads
When to use it

When you want to know who participated in a specific Slack thread.

When not to use it

If you need advanced statistics or full message history of the thread.

Security analysis

Safe
Quality score85/100

This skill only executes a read-only Python script to list Slack thread participants. No destructive commands, network exfiltration, or safety bypasses are involved. The use of Bash is limited to invoking a predefined script with fixed arguments, posing minimal risk.

No concerns found

How this analysis is made

Examples

List thread participants
スレッド参加者を見せて
Ask who is in the thread
このスレッドの参加者は誰?
Request thread member list
スレッドメンバーを一覧表示して

name: thread-user-lister description: スレッドの参加者一覧を取得する。「スレッド参加者」「誰がいる?」「このスレッドの参加者」「スレッドメンバー」「スレッドのユーザー」「誰が返信してる」「参加者を見せて」などで起動。Pythonスクリプト slack_message.py thread-users を使用。 allowed-tools: [Bash]

Thread User Lister

スレッドの参加者一覧を取得します。

ワークフロー

1. スレッド情報の確認

以下を確認:

  • チャンネルID
  • スレッドのタイムスタンプ

2. 参加者一覧取得

Pythonスクリプトを実行:

python plugins/shiiman-slack/skills/mention-checker/scripts/slack_message.py thread-users \
  --channel C01234567 \
  --ts 1234567890.123456 \
  --format table

3. 結果の表示

スレッド参加者を表示:

スレッド参加者数: 3

user_id      user_name
U01234567    山田太郎
U01234568    佐藤花子
U01234569    田中一郎

コマンド連携

実際の処理は /shiiman-slack:thread-users に委譲します(SSOT として扱う)。

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/thread-user-lister-mma3jrfs/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/thread-user-lister-mma3jrfs' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/thread-user-lister-mma3jrfs/download' --output '.skill-downloads/thread-user-lister-mma3jrfs/SKILL.md.part' && mv '.skill-downloads/thread-user-lister-mma3jrfs/SKILL.md.part' '.skill-downloads/thread-user-lister-mma3jrfs/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/thread-user-lister-mma3jrfs/SKILL.md' && test -s '.skill-downloads/thread-user-lister-mma3jrfs/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/thread-user-lister' && cp -R '.skill-downloads/thread-user-lister-mma3jrfs' '.claude/skills/thread-user-lister'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/thread-user-lister-mma3jrfs'

openskills read 'thread-user-lister-mma3jrfs'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/thread-user-lister-mma3jrfs/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

Related skills