What is tether?
tether is a Claude Code mod by Ryubara that holds a project together across Claude Code sessions: an agents pane, watchers that wake the model only for news, and guards against expensive mistakes. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | Ryubara |
| Repository | Ryubara/tether |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | High risk (48/100) |
| Rank | #4,481 of 5,272 Claude Code mods; #467 in Security |
| License | MIT |
| Last commit | 2026-10-16 |
| Hooks | 15 events |
| Sees | ? calls, Agent calls, Edit calls, SendMessage calls, Write calls, classic hooks, every prompt, subagent spawns |
| Draws on | Pane |
Is tether safe to install?
tether scores 48/100 on the MCPMods security check: High risk. Things to review: starts processes outside the sandbox; writes files or config; reads environment variables; watches every prompt or event. It passed 3 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes files or config | Review |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| Drives Claude (model calls, prompts) | Note |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.agent.list | |
$.clock.after | |
$.clock.every | |
$.clock.now | |
$.command.register | |
$.command.run | drives Claude |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.list | reads files |
$.fs.read | reads files |
$.fs.stat | reads files |
$.fs.write | writes files |
$.process.run | runs processes |
$.prompt.read | |
$.prompt.submit | drives Claude |
$.session.cwd |
How do I install tether?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/Ryubara/tether claude plugin validate ./tether/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add Ryubara/tether && claude plugin install tether@tether
Or ask Claude to set it up
Paste this into Claude Code and it installs tether for you:
Install the "tether" Claude Code mod from https://github.com/Ryubara/tether. Run claude plugin validate on it first and show me what it can access before you enable it.