Tune-Up: a free Grok Bot that grades and fixes your other bots
At a glance
Viaknox’s open-source Tune-Up (v0.3.4, MIT) installs as a Grok Bot template/plugin, reviews bots you put in scope against five checks, turns misses into tests, and pastes small instruction fixes only after you approve. Skill index loads the right SKILL.md only when needed (claimed ~77% shorter always-on instructions). Free connector also works with Claude/Cursor; ChatGPT beta. This workflow is listed under Grok-Bot, agent-ops, HITL, skills, devtools, monetize.
Marc Lou’s MailCheap exposes Streamable HTTP MCP at https://mailcheap.ai/mcp so ChatGPT, Claude and Grok Bot connect with OAuth (no key to copy); Claude Code, Codex and Cursor use a bearer API key. Agents can draft campaigns, send tests, schedule issues and read stats; schedule/send tools are marked destructive and ask before sending. Open-source / self-host option; pay only for SES-style sends vs beehiiv-class plans.
Ledger’s Agent Intent queue lets background agents (Grok Bot, Muse, Hermes, OpenClaw, Dots) prepare actions—e.g. Grok Bot watches an inbox and drafts an invoice payment—while you review asynchronously and physically confirm on a Ledger signer Secure Screen. Agents never hold signing keys; coding agents can use Agent Stack CLI/skills too.
MIT Go daemon + git hook reviews every commit with the CLIs you already pay for—Codex, Claude Code, Cursor, OpenCode, and first-class Grok Build (grok / grok-build). Findings stay in a ledger until closed; agent hooks push open review IDs back into the session for /roborev-fix before context goes cold. Reviews stay on your machine.
Official xAI form lets builders list a remote MCP server or public GitHub plugin for Grok Bot and Cursor (Grok chat listed as coming soon). Need org handle, 1:1 logo, description, testing instructions, local+in-app test confirmation; free-to-users publisher terms; review follows by email.