JSPM

Reactive, drift-corrected wall-clock cadence for @zakkster/lite-signal. One 1s heartbeat, zero-GC relativeTime / countdown / every, deterministic for tests and SSR. Not a date library -- Intl does formatting, you bring the dates.

Official Lyrra SDK — drop-in observability (errors / RUM / heartbeat) with one install. Works in browser, Node, Next.js, Express, Hono, and Cloudflare Workers.

Background-safe keepalive timers for React Native. Drop-in setTimeout/setInterval that keep firing when the screen is locked — built for LiveKit calls, audio sessions, and long-lived connections. Powered by Nitro Modules.

AI agent with persistent memory, heartbeat check-ins, and a knowledge vault

Universal WebSocket client. Auto-reconnect, message queue, channels, request/response, heartbeat. Zero dependencies.

Agent-readable market heartbeat over MCP. Dollar-notional bucket events for BTCUSDT, designed for AI agents to read and explain (not for trading signals).

Agente de telemetría y control de despliegues: reporta instancias activas a un endpoint central y permite bloqueo remoto opcional. Funciona en Node.js y navegador.

WebSocket middleware for Node.js servers with pluggable auth, designed to work with http-request-manager

WebSocket client with heartbeat and reconnection support

The Soma trust machine for AI agents — one package: execution heart (HMAC, birth certs, heartbeat chain, credential rotation, human-consent session mode) + sensorium (temporal fingerprinting, behavioral landscape, phenotype atlas) + MCP middleware.

Universal user activity tracking library

Local dead-man's-switch for cron jobs — get alerted when a scheduled job silently stops running. Zero dependencies, no server.

A js client library for heartbeat.sh

SafeLink is an open-source NodeJS library created to maintain long-term communication between distant remote sites with varying network quality

WebhookAgent heartbeat runtime — poll, break, process webhook events at your agent's pace

Lightweight WebSocket heartbeat manager for ws servers.

React hooks for WebSocket, EventSource, reconnect, heartbeat, and online status.

Beacon - the AI agent orchestrator. 13 transports, agent scorecard dashboard, heartbeat, mayday, accords, virtual cities, proof-of-thought, relay, memory markets, hybrid districts, x402 micropayments, compute marketplace

The official analytics SDK for Discord bots — track commands, users, guilds, and uptime with the Cordia platform.

Official JavaScript/TypeScript SDK for Kodo Status Pages - Server & Browser

极简、零依赖的浏览器 WebSocket 客户端 SDK:内置协议、自动重连、心跳、请求-响应、类型推导。

Node.js websocket enhanced service. Support node.js and browser platform, features: message encrypt(base on 4096 length rsa and symmetric), basic heartbeat, client authorization, directly message, channel message.

SPM Agent for monitoring MongoDB

Provenonce Beat SDK — Agent heartbeat client for sovereign time authentication

Multi-agent observability: cascade failure detection, heartbeats, and forensic replay

Independent heartbeat tool with tmux injection and optional proxy mode

websocket heartbeat for miniprogram

SPM Agent for monitoring Apache httpd

简单封装WebSocket的心跳检测和自动连接

pulse heartbeat client + @Pulse decorator for NestJS / TypeScript

Runs ping functions periodically to determine if third parties are still alive.

Simple heartbeat server and client to manage overall agents and discovery

Node.js websocket enhanced service. Support node.js and browser platform, features: message encrypt(base on 4096 length rsa and symmetric), basic heartbeat, client authorization, directly message, channel message.

Lightweight Telegram message relay — dev tool for notifications, crash alerts, deploy pings, and more

networked status aggregator

server status monitoring tool made simple

HTTP health check middleware for Koa servers

Pipedream Heartbeat Components

Core identity, heartbeat, Socket.io, config, and signal buffer for Trillboards Edge AI SDK

Node module to run simple custom checks for your machine or it's connections. It will use redis-heartbeat to send the current state to redis.

OpenCode Heartbeat Plugin - 心跳检测和定时任务插件

Mesure du temps actif, événements et bugs pour rémunérer les testeurs (Web, RGPD, anti-fraude).

一个简单的websocket封装, 自带错误重连, 自动心跳, 支持web h5和react-native

Find the primary node process in a multi server cluster.

ES6 JS classes for Game Lobbies with friend lobbies, heartbeats and disconnect handlers

简单封装WebSocket的心跳检测和自动连接

Heartbeat daemon, config management, and background sync for OpenMnemo

SPM Agent for monitoring Nginx

Utilities for managing SharedWorker port connections with ping/pong heartbeat and visibility tracking

Proactivity primitives for autonomous agents — scheduling, governance, goals, briefing

Reliable WebSocket client with reconnect, heartbeat and typed messages

Auto-reconnecting WebSocket client for Node and Deno — exponential backoff, send buffering, seamless soft-restart, and an inactivity watchdog for zombie connections.

A WebSocket client with built-in heartbeat mechanism, automatic reconnection, and message format support.

TypeScript SDK for Agent Pulse — the on-chain liveness protocol for autonomous AI agents on Base. One-line alive checks, x402 micropayments, bidirectional gating.

Supervised loop management with heartbeat monitoring for the Nevar rules engine

Enhanced N8N node with auto-reconnection for Mattermost events

High-performance WebSocket client with auto-reconnect, heartbeat and priority messaging

SDK for reverse-proxy — register, heartbeat, and deregister backend services

Biblioteca de observabilidade com heartbeat e monitoramento de recursos

Lightweight monitoring SDK for Nuvio-managed projects

Makes constant requests to urls and logs whether the response was successful and the response time. Can be configured to throw errors if the response fails in order to crash containers.

Skynet Mobile Plugin for Heartbeat

Client for Fing Heartbeat Infrastructure

Exemplar TypeScript SDK

OpenCode plugin providing request_human_input MCP tool for Heartbeat pipeline (approval + assistance)

A simple light-weight Typescript module for pinging HTTP services at set intervals to provide a heartbeat.

A library to ping an endpoint in recurring intervals

A TypeScript WebSocket client wrapper with built-in heartbeat mechanism and auto-reconnection support.

A powerful WebSocket client with auto-reconnect, heartbeat, message caching, and authentication support

A robust distributed locking mechanism for Node.js applications using AWS S3 as the backend storage, with support for deadlock detection, timeout handling, automatic lock refresh, retry with backoff, and cleanup utilities. Fork of s3-mutex adding injectab

Watchdog timer - triggers alarm when no message received within timeout

A module for sending heartbeats to OpsGenie

Cron job monitoring and heartbeat monitoring SDK for Node.js. Monitor scheduled tasks, background jobs, and cron jobs with simple ping telemetry. Get alerts when cron jobs fail, miss their schedule, or run too long.

Official Skypulsefy Pulse client for sending heartbeat pings

Premium, lightweight, isomorphic full-stack real-time engine and hooks framework for React, Node.js, and browser environments. Features resilient WebSocket auto-reconnections, exponential backoff with jitter, offline event buffers, active pings, presence

Resilient SSE and WebSocket client with automatic reconnection, exponential backoff, heartbeat checks, and replay-from-last-event-id support.

Lightweight monitoring SDK for Matowatch - send heartbeats, logs, errors, metrics, and system profiling from your Node.js app

S7 Protocol Runtime Library

Service control and lifecycle management for distributed services

Cron job monitoring with dead man's switch and timeout detection

Command-line interface for Uptrack uptime monitoring

Express midleware to test database connectivity

OpenCode plugin providing dispatch_cycle MCP tool for Heartbeat — dispatches cycle tasks via native tool call instead of JSON parsing

One-line monitoring for LangChain. A BaseCallbackHandler that pings StillRunning on every chain/agent run with duration, tokens, cost, model, and tool-call count.

[](https://npm.im/typed-websocket-client) [](https://npm.im/typed-websocket-client) [![License](https://img.shields.io

Seamless, multi-tab session orchestration for the modern web.

A TypeScript implementation of a heartbeat LED for Node.js on a Raspberry Pi.

BearWatch SDK for Node.js - Job monitoring and alerting

將 Next.js 站點連接至 emat 中央後台 — heartbeat、feature flags、遠端控制、事件回報。

A simple websocket-monitoring, heartbeat-based module written in TypeScript

A robust websocket streaming service using RxJS

Node.js TypeScript module to manage distributed locks in DynamoDB with the AWS SDK. This package allows the caller to create locks, auto-refresh locks via heartbeats, takeover expired locks, and release locks.

Browser client for @pulsat.io

Non-blocking timers and heartbeats for pi agents — stop using sleep

Sematext Docker Agent - Metrics and Log Collection Agent for Docker

A small client side websocket library for browsers.

Support heartbeat + reconnection mechanism

Leader election for subscription/changefeed databases

基于ES6的class 来封装的WebSocket，包含心跳，断线重连。

Status route for your server

A lightweight processor for websocket connections, providing acknowledged messages, error handling and connection status monitoring. The same code runs on client and server.

A Node.js based WebSocket distributed communication framework that enables seamless multi-server collaboration for real-time communication, cross-server event handling, and scalable applications.

Low level and abstract KeepAlive-like structure.

Lightweight cron job heartbeat monitor. Add one curl to your crontab — get Slack/Discord alerts when jobs fail silently. Free tier, no install.

MCP server for Uptime Kuma — monitor management, heartbeats, status pages, and notifications for AI assistants

A resilient, type-safe WebSocket client with auto-reconnect, heartbeat, offline buffering, and lifecycle

Automatic reconnect, heartbeat, and QR-stale detection for @whiskeysockets/baileys connections

simple heartbeat manager

Heartbeat + AI-workflow monitoring for n8n. Reports success/failure (and the point of failure) to StillRunning so you know the moment a workflow fails silently.

Lightweight cron job heartbeat monitor. Add one curl to your crontab — get Slack/Discord alerts when jobs fail silently. Free tier, no install.

Production-ready WebSocket hook for React. Auto-reconnect with exponential backoff, message queuing, heartbeat, and full lifecycle callbacks.

Health protocol client for distributed local agents (Varta VLP v0.2).

Prevents your Node.js process or online dev session from going to sleep by running a persistent heartbeat.

Production-quality typed WebSocket hook for React with intelligent connection sharing, auto-reconnect, and message queuing

One-line monitoring for any async job, agent, or script. Wrap a function and StillRunning gets a ping on success/failure with duration, and optional cost, tokens, and model.

Interval between ping-pong heartbeats between debased server & clients

DevGlobe plugin for OpenCode - appear active on the globe while coding with AI

One-line monitoring for the Claude Agent SDK. Wrap query() and auto-ping StillRunning on every agent run with duration, tokens, cost, model, and tool-call count.

A robust distributed locking mechanism for Node.js applications using AWS S3 as the backend storage, with support for deadlock detection, timeout handling, automatic lock refresh, retry with backoff, and cleanup utilities.

Complete starter kit for bootstrapping AI agent companies. Three-layer verification, 27 skills, GSD v1 execution, self-learning CLAUDE.md.

log recorder, info and error

Lightweight health check and event loop monitoring detection library for Node.js. Supports custom indicators and TypeScript.

Self-hosted Claude AI agent framework — gateway, memory, tools, Telegram, cron, heartbeat. Full system access via tool_use.

Universal WebSocket client. Auto-reconnect, message queue, channels, request/response, heartbeat. Zero dependencies.

Because even your code deserves a heartbeat.

tcp heartbeat

use broadcast or multicast to coordinate an app leader

A ping-pong mechanism using rxprotoplex and RxJS for managing reliable connections.

SDK for integrating with MORTEM — an AI agent with programmatic mortality on Solana. Observe heartbeats, detect death, fund resurrection, and build agent integrations.

websocket heartbeat reconnect.

websocket heartbeat

Production-grade WebSocket client with auto-reconnection, heartbeat, and state management

Adds a pingable endpoint to the project to test DB connection.

Node.js monitoring utility to track uptime, CPU, and memory usage and report to a central admin server.

Living data components. 132 modes across 25 categories. Ring gauges, VU meters, heartbeat monitors, spectrum analyzers, radar sweeps, thermometers, compass dials. One canvas, 60fps interpolation, two props. Zero dependencies.

WebSocket 客户端封装组件，支持自动重连、心跳检测 - Day 1 核心组件 C4

One-line monitoring for the Vercel AI SDK. Auto-pings StillRunning on every generateText / streamText / generateObject run with duration, tokens, cost, model, and tool-call counts.

Pre-built heartbeat tasks for OpenClaw agents. Email, weather, calendar, prices, news, etc.

Zero-dependency, never-break Server-Sent Events client for AI agents. Works across three durability tiers — ephemeral (in your agent session), foreground (on your laptop), or supervised (systemd/Docker/pm2). Reliable delivery via reconnect + exponential b

Codex thread heartbeat CLI (auto-continue long tasks)

A tiny, dependency-free WebSocket client with exponential-backoff reconnect, heartbeats, an outgoing queue, and pluggable transports. Works in browsers, Node, Deno, Bun, and edge runtimes.

Mock heartbeat sensor for the Zetta platform

CLI for DidItRun — cron job monitoring made simple

Type-safe, secure cross-window communication with built-in origin validation, JSON Schema message validation, robust heartbeat monitoring, and defensive error handling

A simple complete heart-beat solution for node sockets

Leader election backed by MongoDB

Package to ping lambda calls

A headless WebSocket core library with reconnection, heartbeat, and message queue support

👉 https://hyper.fun/c/fa-heartbeat/1.3.0

CLI-first observability layer for AI agents — lifecycle tracking, stuck-run detection, and resource-level health signals for agentic tool calls

Beacon SaaS collector — heartbeats, metrics, and agent discovery for OpenClaw agents

Application layer heartbeat, more flexible and useful.

n8n community nodes for Better Stack Uptime API integration

A powerful WebSocket client with auto-reconnect, heartbeat, message caching, and authentication support

Official Node.js SDK for CronBeacon — cron job and scheduled task monitoring.

CLI heartbeat agent and configuration manager for Fleet Monitor

heartbeat stream will help to keep objects flowing when main stream is waiting for more data

A good heartbeat timer

A test package to simulate a heartbeat endpoint.

Keep an eye on the active (running) status of the mentioned service.

Modul Node.js untuk menyimpan log.

高级WebSocket服务库，支持单例模式、发布订阅模式、自动重连、心跳机制等功能

👉 https://hyper.fun/c/tabler-heartbeat/1.3.0

Heartbeat utilities for DigitaliaConnect Protocol

SafeLink is an open-source NodeJS library created to maintain long-term communication between distant remote sites with varying network quality

Official Node.js client for Whycron — cron job monitoring that tells you why.

一个简单易用的WebSocket客户端工具，支持心跳机制、断点重连和事件订阅

Zero-config heartbeat monitor for Claude agents and cron jobs

Sends a 1 to AWS CloudWatch every so often.

CLI heartbeat agent and configuration manager for ClawFleet Monitor

Handles websocket ping/pong with BitMEX

YAML to OpenClaw cron sync tool

Monitor your AI agents in 2 lines of code — heartbeat watchdog, loop detection, cost tracking, auto-restart

面向 Vue 项目的轻量工具包，目前提供：

高级WebSocket服务库，支持单例模式、发布订阅模式、自动重连、心跳机制等功能

A background daemon that periodically wakes Claude Code using a HEARTBEAT.md checklist

Mama checks up on you to make sure you're alright

A js client library for heartbeat.sh

CLI heartbeat agent and configuration manager for ClawTrace Monitor

Self-hosted server monitoring powered by a zero-dependency bash agent. Runs on Cloudflare Workers, Node.js, and Bun.

Some helpers for simplified use of zeromq.node.

Physical module for testing downstream dependency on MongoDB

live websocket

A simple watchdog node

Pipedream Heartbeat Components

EmberQL is an intuitive, lightweight Node module that facilitates caching data from GraphQL queries, and implements a dynamic data persistence system that monitors the status of the primary database and modifies cache invalidation accordingly.

Small manager around setInterval

Tickstem heartbeat monitoring SDK for Node.js

Retry a promise with a heartbeat

A TypeScript library for WebSocket with heartbeat and reconnect functionality

A websocket heartbeat plugin

A heartbeat monitor

HeartSuite Server that receives heartbeat from client

Heartsuite Client that send heartbeats to a Heartsuite server

Physical module for testing downstream dependency on Redis

primus-spark-heartbeat is a Primus plugin used to change how the heartbeat system works

Drop-in WebSocket ping/pong heartbeat handling for the ws module

```bash npm install websocket-heart-beat-mytest ```

easy to use websocket for react and use heartbeat mechanism

A lightweight heartbeat and ping server

react for heartbeat mechanism and use publish and subscribe mode

websocket for miniprogram

Heartbeat library

Official SDK for Pingzo — uptime monitoring, status pages, and instant WhatsApp alerts for developers.

One canonical, persistent implementation of the agent-lifecycle MCP tools (register_agent, heartbeat, set_focus, list_agents, send_feedback) exposed as a single registerAgentTools(server). SQLite-backed via @hasna/cloud, optional @hasna/events lifecycle e