C — Moderate risk signals Graded October 16, 2026Several concerns worth a closer look before you install.Based on public adoption and transparency signals as of October 16, 2026. Our opinion, not a code audit or security guarantee.
App connector · Files & documents, Communication
slackdump
Save or export your private and public Slack messages, threads, files, and users locally without admin privileges.
Bottom line: Signal-based grade (3/7 points): well starred on GitHub, public source code. This reflects adoption and transparency, not a code audit.
- Popularity score
- 39/100
- Rank
- Not ranked: outside the 500 most popular tools
- GitHub stars
- 2.8k
What it does
Slackdump exports your Slack messages, threads, files, and user data to local storage without requiring workspace admin privileges. It works with both public and private channels, enabling bulk data retrieval and archival directly from your Slack workspace.
Who it’s for
Individual Slack users, compliance teams, and data analysts who need to archive or migrate Slack communications independently. Organizations requiring local backups or message export for legal/compliance purposes.
Copy-paste setup
Check these steps against the project’s own instructions before running anything.
This is a CLI tool rather than a traditional MCP server. Verify against the repo README at https://github.com/rusq/slackdump (opens external site) for current installation. Typical usage: go install github.com/rusq/slackdump@latest or download pre-built binaries. Requires Slack API token (user or bot) and workspace URL. Not currently packaged as MCP server—integration would require custom adapter.
Risks
- Credential exposure: Requires Slack API token with user/message read permissions; token compromise grants full message access
- Data exfiltration: Enables bulk local export of potentially sensitive communications without audit trail or admin oversight
- Supply chain: Single-maintainer Go project; updates and security patches depend on maintainer availability
- Scope creep: User tokens may retain broader permissions than necessary; no granular scoping available
- Compliance risk: Exporting private/DM messages raises potential GDPR/privacy issues depending on workspace policies and user consent
How to stay secure
Least-privilege permissions
- Create a dedicated Slack bot user with only message-reading access (not admin rights). Never use your personal Slack token, which may have unnecessary permissions.
- Restrict the token's scope to only channels and conversations you actively need to export; avoid giving it access to all workspace data.
- Rotate tokens regularly (monthly recommended) and immediately revoke old tokens to limit exposure if a token is compromised.
- Document who has access to the exported data and the token itself; store tokens in a password manager, never in code or shared documents.
Network isolation
- Run slackdump on a dedicated, offline machine or isolated network segment when exporting sensitive communications to reduce interception risk.
- Disable cloud sync on the device storing exported data (e.g., OneDrive, Google Drive, iCloud) to prevent automatic uploading of sensitive message backups.
- Use a VPN or private network if running the tool remotely; avoid exporting over public WiFi or untrusted networks.
Monitoring
- Track all exports by logging who ran slackdump, when, and what data was downloaded (dates, channels, file counts).
- Set up Slack audit logs to flag when your token is actively pulling messages, and review these logs monthly for unexpected activity.
- Monitor the exported files for unauthorized access; if stored locally, use encryption and check file access timestamps regularly.
Red flags to watch for
- Unexpected token activity in Slack's app audit log—if your token is reading messages outside scheduled export times, it may be compromised.
- New or frequent updates to slackdump that aren't documented—check the GitHub repository; a long silence then sudden changes could indicate maintenance gaps or security issues.
- Exported files disappearing or growing unexpectedly without your action, suggesting unauthorized re-runs or tampering.
- Compliance complaints or privacy concerns from workspace members about their private messages being exported—pause usage and consult your legal/HR team.
Alternatives
- Slack's native export — Official admin-controlled export (requires workspace admin)
- Datasette/Dogsheep Slack — Community tools for Slack data exploration with more transparency
- Zapier/Make workflows — Managed integrations with audit trails and permissions controls
- AWS Slack Archiver — Enterprise-grade solution with compliance and access logging