ringback

ringback is a plugin for Claude Code from mohitbadwal/ringback. Its manifest loads nothing; the 1 skill it bundles cost 96 tokens per session together, scanned A, original, Apache-2.0.

A plugin that lets an AI agent call a person over a voice phone connection and have a two-way conversation. It uses self-hosted SIP, a system for internet-based calls, and Docker to run the engine.

In plain words
What is it for?
Use it for human-in-the-loop approvals, voice conversations, and tiered agent alerts based on whether you are present at the computer.
Why use it?
It lets the agent request a human decision by phone when the person is away from the keyboard, with alerts arranged by urgency.

Plugin for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Good fit Use it for human-in-the-loop approvals, voice conversations, and tiered agent alerts based on whether you are present at the computer.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add mohitbadwal/ringback
/plugin install ringback
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/mohitbadwal/ringback

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ringback

README.md
[![agentmods](https://agentmods.dev/badge/plugins/mohitbadwal/ringback/plugin/github.svg)](https://agentmods.dev/plugins/mohitbadwal/ringback/plugin)
Your own site
<a href="https://agentmods.dev/plugins/mohitbadwal/ringback/plugin"><img src="https://agentmods.dev/badge/plugins/mohitbadwal/ringback/plugin/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ringback

Your own site · 80×15
<a href="https://agentmods.dev/plugins/mohitbadwal/ringback/plugin"><img src="https://agentmods.dev/badge/plugins/mohitbadwal/ringback/plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 96 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

ringback scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugin/.claude-plugin/plugin.json · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "ringback",
  "displayName": "ringback — your agent calls your phone",
  "version": "0.1.0",
  "description": "Two-way voice phone calls plus tiered alerts for your AI agent, over free self-hosted SIP. The agent rings your phone and talks to you when it needs a decision, and it is presence-aware so it only calls when you are away from the keyboard. Runs the engine in Docker, so there is no local build.",
  "author": { "name": "Mohit Badwal" },
  "homepage": "https://github.com/mohitbadwal/ringback",
  "repository": "https://github.com/mohitbadwal/ringback",
  "license": "Apache-2.0",
  "keywords": [
    "mcp", "voice", "phone", "sip", "claude", "human-in-the-loop",
    "notifications", "whisper", "tts", "agent", "docker"
  ],
  "hooks": {
    "SessionStart": [
      { "hooks": [ { "type": "command", "command": "\"${CLAUDE_PLUGIN_ROOT}/bin/prepull.sh\"" } ] }
    ]
  },
  "userConfig": {
    "sip_id": {
      "type": "string",
      "title": "Your SIP address",
      "description": "Your Linphone SIP address, e.g. sip:[email protected]. This is also the phone the agent calls unless you set a different number below.",
      "required": true
    },
    "sip_user": {
      "type": "string",
      "title": "SIP username",
      "description": "Your Linphone username (the part before the @).",
      "required": true
    },
    "sip_pass": {
      "type": "string",
      "title": "SIP password",
      "description": "Your Linphone account password. Stored in your OS keychain, never in a file.",
      "sensitive": true,
      "required": true
    },
    "sip_callee": {
      "type": "string",
      "title": "Address to call (optional)",
      "description": "SIP address the agent dials. Leave blank to call your own SIP address above."
    },
    "display_name": {
      "type": "string",
      "title": "Caller-ID name (optional)",
      "description": "Name shown on your phone when the agent calls, e.g. My Claude."
    },
    "stun_server": {
      "type": "st

Read the full file on GitHub · 86 lines

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 96 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 86 lines scan A 8222c4697b83

Subscribe to this mod's changes

ringback is a plugin published in the GitHub repository mohitbadwal/ringback (25 stars, last pushed 4mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.