Claude Code mod
blocks-only
Coding turns end in a validated report of typed blocks, drawn as one card in the Desktop app; prose stays folded.
Install
/plugin marketplace add h3h/blocks-only
/plugin install blocks-only@blocks-onlyMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: drives Claude, reads mod state, persists state, draws
- Sees
- every tool call, classic hooks
- Draws in
AssistantMessageToolResultToolUseToolGroup- Hooks
session.startcommand.runprompt.composeturn.starttool.callclassic.Stopturn.completeui.renderui.messageui.fault
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- h3h/blocks-only
- Folder
.- Marketplace
blocks-only- Author
- Bradford Fults
- License
- MIT
- Last updated
- 14 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is blocks-only?
Coding turns end in a validated report of typed blocks, drawn as one card in the Desktop app; prose stays folded. It is a mod for Claude Code, from h3h/blocks-only on GitHub.
What can the blocks-only mod access?
Its widest reach is "writes or runs" (drives Claude, reads mod state, persists state, draws). It sees every tool call, classic hooks. It draws in AssistantMessage, ToolResult, ToolUse, ToolGroup. Like any mod, it runs with your permissions.
How do I install blocks-only?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add h3h/blocks-only and then /plugin install blocks-only@blocks-only.
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