Packages

4685 results

ReadMe API

Developer Tools

ReadMe provides a REST API for programmatically managing developer hubs including API reference pages, guides, changelogs, custom pages, and developer usage metrics.

Free tier documentation api-docs developer-hub
58

passport-local

Developer Tools

Passport.js strategy for local username/password authentication. Verifies credentials against a custom verification callback that checks the user database. Integrates with Express.js via Passport.js middleware. Part of the Passport.js ecosystem — works with passport-jwt, passport-google-oauth20, and 500+ other strategies through a unified authentication interface.

Free tier passport authentication local
58

AI Trader

Finance

Config-driven backtesting framework for algorithmic trading built on Backtrader, with an integrated MCP server that lets LLMs run and analyze backtests across stocks, crypto, and forex.

MCP Free tier backtrader trading backtesting
58

AgentOps API

Monitoring

Python SDK and hosted platform for observing AI agent sessions — tracking LLM calls, tool invocations, token costs, latency, and errors across multi-agent workflows.

Free tier observability tracing llm
58

Budibase API

Developer Tools

Budibase — open-source, self-hostable low-code platform for building internal apps, admin panels, and CRUD interfaces with a built-in database, external data connectors, and a public REST API.

Free tier budibase low-code internal-tools
58

Calendly API

Other

Calendly's REST API for managing scheduling links, event types, scheduled events, and invitees to automate appointment booking workflows.

Free tier calendly scheduling booking
58

D-ID API

AI & Machine Learning

AI video generation API that animates still photos or AI-generated avatars to speak using text-to-speech or provided audio. D-ID's Clips API creates talking head videos from scripts in seconds — the AI avatar's face animates realistically with synchronized lip movements. Used for AI presenters, personalized video messages, e-learning, and interactive digital humans.

Free tier avatar video digital-human
58

Deep Research

AI & Machine Learning

Self-hosted deep research tool that generates comprehensive research reports in about 2 minutes using configurable thinking and task LLM models. Combines multiple LLM providers (OpenAI, Anthropic, Google, Deepseek, Mistral, Ollama, etc.) with multiple search providers (Tavily, Searxng, Brave, Exa, Firecrawl). Includes MCP server support, knowledge graph generation, research history, and a multi-language web UI.

MCP Free tier deep-research mcp multi-llm
58

Fly.io

Cloud Infrastructure

Fly.io is a platform for running containerized applications globally close to users, using their Machines API (REST) and flyctl CLI. It runs Docker containers as fast-booting Fly Machines (micro-VMs based on Firecracker) across 30+ regions, with built-in Anycast networking, Postgres, Redis, and object storage.

Free tier deployment containers edge
58

Hatchet

Developer Tools

Durable workflow orchestration engine designed specifically for AI agent workloads. Hatchet provides background job execution with built-in durability, retries, concurrency control, and real-time streaming. Supports long-running AI workflows (multi-step LLM chains, agent loops) without timeouts. Built-in fan-out/fan-in patterns, priority queues, and rate limiting for agent orchestration. Self-hostable or managed cloud (Hatchet Cloud). Designed as a modern alternative to Celery/BullMQ for AI-native Python/TypeScript applications.

Free tier workflow background-jobs orchestration
58

Have I Been Pwned API

Security

API for checking whether email addresses, usernames, or passwords have appeared in known data breaches, built and maintained by Troy Hunt. Covers billions of breached credentials.

Free tier hibp breach passwords
58

Langflow

AI & Machine Learning

Visual low-code tool for building and deploying LangChain and LlamaIndex applications. Langflow provides a drag-and-drop interface where each component is a Python class — you can mix visual flow building with Python code for custom components. Every Langflow flow exposes a REST API. More Python-centric than Flowise — supports Python custom components and direct code editing within the visual builder. Backed by DataStax (Astra DB vector database company).

Free tier langchain visual-builder llm
58

MCP Server ChatSum

Other

Provides an MCP tool to query and summarize chat messages stored in a local SQLite database populated by a companion chatbot application. Exposes a single `query_chat_messages` tool for retrieval and AI-driven summarization.

MCP Free tier chat summarization query
58

Mediastack API

Other

Delivers real-time news data from 7500+ sources across 50+ languages via a simple REST API with multilingual support.

Free tier news media rest-api
58

Prospeo API

Developer Tools

Prospeo REST API — email finder and sales intelligence platform that discovers and verifies professional email addresses from LinkedIn profiles and company domains, enabling agents to automate lead enrichment and outbound prospecting workflows.

Free tier prospeo email-finder lead-generation
58

Userflow API

Other

Provides a REST API for managing user onboarding flows, checklists, and product tours server-side, allowing agents to identify users, update attributes, and track task completion without front-end instrumentation.

Free tier onboarding product-tours checklists
58

Web Eval Agent

Other

A now-sunsetted MCP server that autonomously evaluated web applications by driving a browser agent through user-specified tasks, capturing screenshots, console logs, and network traffic, then returning a rich UX report to the calling AI agent.

MCP Free tier browser testing mcp
58

Zapier

Developer Tools

No-code automation platform connecting 5000+ apps via Zaps (trigger → action workflows), with an API for triggering Zap steps and Zapier NLA for natural language-driven automation.

Free tier zapier automation integration
58

mcp-server-apple-shortcuts

Productivity

MCP server that bridges AI assistants with Apple Shortcuts on macOS, allowing listing and executing shortcuts by name with optional input parameters.

MCP Priority Free tier apple-shortcuts macos automation
58

youtube-mcp-server

Social Media

MCP server providing AI language models with programmatic access to YouTube video management, analytics, transcripts, and search.

MCP Priority Free tier mcp youtube video
58
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