SassyMCP

One MCP server to replace them all.

274 tools | 36 modules | 18 tool groups | Replaces 75+ MCP servers | 34MB standalone exe

Last updated: 2026-08-14 — v1.14.4 | all tools unlocked; optional supporter license

Compatible with Claude Desktop, Grok Desktop, Cursor, Windsurf, and any MCP client.

The official GitHub MCP server has critical SHA-handling bugs. SassyMCP's GitHub module uses correct blob SHA lookups, proper path encoding, atomic multi-file commits via Git Data API, retry logic with exponential backoff, and rate-limit awareness. It's a drop-in replacement that actually works.

Why SassyMCP?

The MCP ecosystem is fragmented. Need file operations? Install Filesystem server. Need terminal? Desktop Commander. GitHub? Another server. Android? Another. Screenshots? Another. You end up with 6-10 separate MCP servers, each consuming context window, each with its own config, bugs, and update cycle.

SassyMCP replaces 75+ individual MCP servers — including Desktop Commander (5.9k stars), Windows-MCP (5k stars), GitHub MCP Server (28.6k stars), Anthropic's official Filesystem and Memory servers, mobile-mcp (4.4k stars), and dozens more — with a single 34MB exe.

Key differentiators:

• Smart Tool Loading — Only loads tool groups you use. Reduces context window overhead from ~25K tokens to ~5K tokens by default.
• Dynamic Vision — Real-time screen monitoring with change detection for both desktop and Android. No more screenshot-and-pray.
• Android Interaction — Full phone control via UI accessibility tree: tap, swipe, type, with automatic sensitive context detection (auth/payment screens auto-block).
• Pause/Resume — User takes over the phone for manual steps (login, 2FA, account selection), AI watches and learns, then resumes autonomously.
• Usage Tracking — ML-lite scoring of tool invocations with exponential decay. Your most-used tools load first.
• Context Estimation — Built-in tool to measure how much of your 200K context window tool definitions consume.
• Response Minification — GitHub API responses stripped of URL metadata bloat (40-70% smaller).
• Safe Delete — Delete commands (rm, del, Remove-Item, etc.) are intercepted across all shells. Instead of destroying files, targets are moved to a _DELETE_/ staging folder in the same directory for human review — protecting against AI hallucinations.
• Guided Setup — Wizard walks through persona, GitHub token, SSH credentials, and optional tool discovery.

What It Replaces

Plus features with no MCP server equivalent: phone pause/resume with sensitive context detection (auto-blocks on login/payment screens), operational hooks (14 expert playbooks), safe delete interception, Windows autorun forensics, Android+Windows clipboard sync, usage-weighted smart loading.

Licensing

Every tool group ships unlocked, for everyone, with no key required. As of v1.13.0 the release model is all-or-nothing — there is no free/pro split, no gated groups, no crippled demo. The 274 tools you see in the module table below are the product, out of the box.

Supporter licenses (optional): SassyMCP can still be purchased through LemonSqueezy as a one-time supporter license (no subscriptions). Activating a key registers your machine as a seat and records a supporter tier that shows in the startup banner, control panel, and VS Code cockpit — it does not unlock anything, because everything is already unlocked. Buy once to support development; refunds revoke the label automatically.

Activation flow (supporters):

1. Purchase at https://sassyconsultingllc.com/store — LemonSqueezy emails you a key (XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX).
2. Activate from your AI agent: sassy_setup_license action=activate key=...
3. Or from a terminal: sassymcp.exe setup opens the interactive menu.

Offline operation: Once activated, a local HMAC-signed payload lets the supporter tier validate fully offline. A weekly re-check against LS catches refunds and cancellations; a faster startup check against the SassyMCP billing oracle cuts refund-to-revocation latency to seconds. Missing, expired, tampered, or corrupt license files just show the free label — tool availability is never affected.

Back-compat: SASSYMCP_LICENSE_BYPASS=1 (the old dev escape hatch that unlocked gated groups) is accepted and ignored — there is nothing left to bypass.

Running supervised (sassymcp supervise)

For always-on / remote deployments, run SassyMCP under its built-in supervisor instead of bare launcher scripts:

sassymcp.exe supervise start              # bridge only (127.0.0.1:21001)
sassymcp.exe supervise start --tunnel-mode managed   # also run the cloudflared tunnel as a child
sassymcp.exe supervise status             # JSON status; exit code != 0 if unhealthy
sassymcp.exe supervise stop               # graceful stop

The supervisor owns the runtime tree and makes it self-healing and orphan-proof:

• No orphans, ever. A hard kill of the supervisor (crash, kill -9, taskkill /f) takes every child with it — on Windows via a Job Object (KILL_ON_JOB_CLOSE), on Linux via process groups + PR_SET_PDEATHSIG. No leftover bridge holding a wedged SQLite/WAL lock, which is what the old taskkill-based scripts caused.
• Self-healing. Crashed children restart with exponential backoff (and give up cleanly after a crash-loop, rather than spinning).
• Catches hangs. An HTTP readiness probe recycles a hung-but-alive bridge — the failure a Windows scheduled task can never detect.
• Crash-survivable control. A pidfile + on-disk registry under $SASSYMCP_HOME mean supervise status/stop work even when the bridge is down, so an operator or agent can recover a wedged system.

start-supervised.bat wraps this as the recommended Windows launcher. stdio mode (Claude Desktop pipe) is client-owned and intentionally not supervised.

Modules