Save or export your private and public Slack messages, threads, files, and users locally without admin privileges.
# Slack Dumper
Purpose: archive your private and public Slack messages, users, channels,
files and emojis. Generate Slack Export without admin privileges.
[](https://github.com/rusq/slackdump/releases/)
**Quick links**:
- [Installation
Tools
Tools
No tool list yet. Remote servers get one after the first health check.
Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Slackdump need an API key?
No required environment variable is listed on this record.
What transport does Slackdump use?
Slackdump runs locally over stdio.
When was Slackdump last checked?
Last checked 2026-11-09. Save or export your private and public Slack messages, threads, files, and users locally without admin privileges.
# Slack Dumper
Purpose: archive your private and public Slack messages, users, channels,
files and emojis. Generate Slack Export without admin privileges.
[](https://github.com/rusq/slackdump/releases/)
**Quick links**:
- [Installation
From the publisher
Documentation
Slack Dumper
Purpose: archive your private and public Slack messages, users, channels,
files and emojis. Generate Slack Export without admin privileges.
Depending on your Slack plan and security settings, using Slackdump may
trigger Slack security alerts and/or notify workspace administrators of
unusual or automated access/scraping attempts.
You are responsible for ensuring your use complies with your organisation’s
policies and Slack’s terms of service.
archive your private conversations from Slack when the administrator
does not allow you to install applications OR you don't want to use
potentially privacy-violating third-party tools;
archive channels from Slack when you're on a free "no archive" subscription;
so you don't lose valuable knowledge in those channels;
create a Slack Export archive without admin access;
create incremental Slack archives, which is particularly useful for free
workspaces with 90-day limits;
[!NOTE]
On Windows and macOS you may be presented with "Unknown developer" window,
this is fine. Reason for this is that the executable hasn't been signed by
the developer certificate.
To work around this:
on Windows: click "more information", and press "Run
Anyway" button.
on macOS 14 Sonoma and prior: open the folder in Finder, hold Option
and double click the executable, choose Run.
on macOS 15 Sequoia and later: start the slackdump, OS will show the
"Unknown developer" window, then go to System Preferences -> Security and
Privacy -> General, and press "Open Anyway" button.
Getting Help
Quickstart guide: slackdump help quickstart, read online.
What's new in V4: slackdump help whatsnew, read online.
Running Slackdump from a Repo Checkout
If you've cloned the repository and want to run slackdump directly without downloading a release, you can do one of the following:
Build and run (creates an executable):
go build -o slackdump ./cmd/slackdump
./slackdump wiz
Run directly:
go run ./cmd/slackdump wiz
Note: You need Go installed on your system (see go.mod for the version)
Slackord2: Migrating to Discord
If you're migrating to Discord, the recommended way is to use
Slackord2 — a great tool with a
nice GUI, that is compatible with the export files generated by Slackdump.
User Guide
For more advanced features and instructions, please see the User Guide,
and read slackdump help pages.
Previewing Results
Once the workspace data is dumped, you can run built-in viewer:
slackdump view <zip or directory>
The built-in viewer supports all types of dumps:
Slackdump Archive format;
Standard and Mattermost Slack Export;
Dump mode files
You can also convert your output file to a browsable static HTML archive:
slackdump convert -f html -o my_html_archive <zip or directory>
or use one of the following tools to preview the export results:
SlackLogViewer - a fast and powerful Slack Export viewer written in C++, works on Export files (images won't be displayed, unless you used an export token flag).
Slackdump2Html - a great Python application that converts Slack Dump to a
static browsable HTML. It works on Dump mode files.
slack export viewer - Slack Export Viewer is a well known viewer for
slack export files. Supports displaying files if saved in the "Standard" file mode.
Slackdump MCP server
Slackdump offers a read-only MCP server with the following features:
analyse the data in the archive (any type)
provide help with command line flags
Available MCP tools:
Tool
Description
load_source
Open (or switch to) a Slackdump archive at runtime
list_channels
List all channels in the archive
get_channel
Get detailed info for a channel by ID
list_users
List all users/members
get_messages
Read messages from a channel (paginated)
get_thread
Read all replies in a thread
get_workspace_info
Workspace/team metadata
command_help
Get CLI flag help for any slackdump subcommand
The server supports both stdio (agent-managed) and HTTP transports.
Quick project setup
Scaffold a ready-to-use project directory pre-configured for your AI tool:
Each command creates the MCP config file and installs bundled Slackdump skill /
instruction files so the agent knows how to work with your archive out of the box.
To learn how to set it up with Codex, Claude Desktop, VS Code/GitHub Copilot,
or OpenCode, see:
Slackdump uses a "log/slog" package, it defaults to "slog.Default()". Set the
default slog logger to the one you want to use.
If you were using logger.Silent before, you would need to
implement a discarding Handler for slog.
FAQ
Do I need to create a Slack application?
No, you don't. Just run the application and EZ-Login 3000 will take
care of the authentication or, alternatively, grab that token and
cookie from the browser Slack session. See User's Guide.
I'm getting "invalid_auth" error
Run slackdump workspace new <name or url> to reauthenticate.
How to read the export file?
slackdump view <ZIP-archive or directory>
My Slack Workspace is on the Free plan. Can I get data older than 90-days?
No, unfortunately you can't. Slack doesn't allow to export data older than 90
days for free workspaces, the API does not return any data before 90 days for
workspaces on the Free plan.
What's the difference between "archive", "export" and "dump"?
"Archive" is the new format introduced in v3, it minimises the memory use
while scraping the data and also has a universal structure that can be
converted into export and dump formats at will by using the "convert" command.
"Export" format aims to replicate the files generated when exporting a Slack
workspace for compatibility.
"Dump" format has one channel per file, there's no workspace information nor
any users stored. Should it be required, one must get users and channels by
running slackdump list command.
Behind the scenes slackdump always uses the "archive" file format for all
operations except "emoji" and "list", and converts to other formats on the
fly, removing the temporary archive files afterwards.
Thank you
Big thanks to all contributors, who submitted a pull request, reported a bug,
suggested a feature, helped to reproduce, or spent time chatting with me on
the Telegram or Slack to help to understand the problem or feature and tested
the proposed solution.
See CONTRIBUTORS.md for the full list of contributors.
Also, I'd like to thank current sponsors:
@malsatin
@angellk
And everyone who made a donation to support the project in the past and keep
supporting the project:
