Backscroll vs When

Side-by-side comparison of two Model Context Protocol servers — install paths, tools, quality signals, and directory engagement so you can pick the right one for Claude, Cursor, and other MCP clients.

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Backscroll logo
Backscroll
soren-achebe
🖥️ Command Line
When logo
When
WhenLabs-org
🖥️ Command Line
SummaryAnswers "what did that command print?" from your real terminal history: a per-command PTY session recorder (OSC 133) stores every command's full output, exit code, cwd, and duration in local SQLite/FTS5, and the MCP server searches, retrieves, and diffs those outputs — secret redaction on by default before anything reaches the model.Developer toolkit: auto-detect stack for AI context files, catch port conflicts, validate .env schemas, spot docs drift, audit dependency licenses, and time coding tasks — 7 MCP tools, one install.
Quality signal44/100 (Fair)44/100 (Fair)
Install pathnpx · lownpx · high
Engagement 1 0 0 6 2 0 0 3
ToolsPer-command PTY session recording with OSC 133 semantic-prompt marksLocal SQLite database with FTS5 trigram full-text searchZstd-compressed command outputs with configurable head/tail captureAutomatic redaction of secrets before output reaches the modelCross-platform shell integration for Bash, Zsh, Fish, PowerShellNo cloud or telemetry; all data stored locally in a single SQLite fileSix integrated tools accessible via one MCP serverEndpoints for stack detection, port checks, env validation, docs drift, license scanning, and task…Unified health report aggregating all tool resultsCLI commands for project onboarding, health checks, and MCP server managementSupports Node.js 20+ with stdio communication
Verified / officialNoNo
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