Puts Approve/Deny on your phone before an agent acts, and waits for your fingerprint.
JavaScript packages for Lauther — push notifications to your phone from any web app or script, and questions that wait for a yes before something irreversible happens.
| Package | What it is |
|---|---|
lauther-client | The Node client. Zero dependencies, two methods, TypeScript types bundled. |
lauther-mcp | An MCP server, so a coding agent can ask its owner for approval on their phone. |
npm install lauther-client
import { Lauther } from "lauther-client";
const lauther = new Lauther(process.env.LAUTHER_TOKEN);
await lauther.push({ title: "Backup finished" });
if (await lauther.ask("Deploy v2.4 to production?")) {
await deploy();
}
Only an explicit Approve returns true. A denial and a timeout are both
false — an unanswered question must never read as a yes.
A browser tab can't reach someone who closed it, and building a native app per project to fix that was never going to happen. Lauther is one app your projects share over an HTTP call.
Node 18+. npm workspaces, no build step, no bundler.
npm install
npm test # both packages
lauther-client has no runtime dependencies and is tested with a stubbed fetch.
lauther-mcp is tested by spawning the real server over stdio and driving it
with a real MCP client against a fake Lauther API — so a broken tool schema or
broken stdio wiring fails the suite rather than a user's agent.
MIT
Source-derived launch command. Check the maintainer’s required arguments and credentials before running:
npx -y lauther-mcpMerge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.
{
"mcpServers": {
"io-github-csanadymiklos-lauther": {
"command": "npx",
"args": [
"-y",
"lauther-mcp"
]
}
}
}Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.
Claude Desktop setup referencelauther-mcpnpmio.github.csanadymiklos/lauther works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.
~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.~/.cursor/mcp.jsonRestart Cursor for changes to take effect..vscode/mcp.jsonReload VS Code window for changes to take effect.~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect..mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.