agent4.io
An intelligent platform for building and operating business agents via MCP.
Install & Use
Copy this prompt and send it to your AI assistant (Claude / Cursor / TRAE / Codex / WorkBuddy etc.) to auto-install:
Help me install this AI Skill: agent4.io. It is used for: An intelligent platform for building and operating business agents via MCP. Full Skill content: https://321skill.com/skills/agent4-io/raw/index.md Read that page and install it.
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This Skill addresses the challenges of messy integrations, difficult knowledge base maintenance, and complex process state management when building business AI agents. In practical development, developers often need to piece together multiple tools and services, manually manage conversation context and knowledge updates, making it difficult to quickly deliver usable business agents.
Usage is straightforward: you simply add a remote MCP server in an MCP-compatible client (like Claude Code or Cursor), configure your API keys, and then you can use natural language instructions to create agents, knowledge bases, load skills on-demand, and design stateful Storylines and page-aware playbooks. For example, telling the AI "Create a customer support agent and build a knowledge base based on these documents" will automatically complete the configuration.
It is ideal for agent developers, backend developers, and product managers who need to build complex business agents. This is especially true for teams and individuals already using the MCP ecosystem who want to quickly deploy grounded AI customer service, automated workflows, or multi-step guided processes.
It is recommended to read agent4.io's design principles (such as "one agent, one task") before starting to avoid bloating agent functionality. Note that it relies on a remote MCP service, requiring an internet connection. The free tier provides 5 million tokens per month, with paid plan upgrades required for usage beyond that.
Key Features
Unlike frameworks such as LangChain or AutoGPT, agent4.io leverages native MCP integration to provide stateful Storylines and page-aware Playbooks. This enables agents to understand business context and execute multi-step guided processes, going beyond simple single-turn conversations or tool calls.
Limitations
Requires an agent4.io account and API key. The free tier has a monthly limit of 5 million tokens, and advanced features require a paid subscription. Relies on a remote MCP server; unstable network conditions may affect responsiveness.
FAQ
How do I get an API key?
Log into the agent4.io console → Settings → Security. The API key will be displayed in plain text once upon creation; please save it promptly.
Which MCP clients are supported?
All MCP clients implementing the streamable-http transport are supported, such as Claude Code and Cursor. You just need to add the remote MCP server.
Installation guide for AI assistants
If your AI coding assistant (Claude Code, Cursor, TRAE etc.) can see this page, send it this message to auto-install:
Visit https://321skill.com/skills/agent4-io/raw/index.md to read the original Skill definition (Markdown format) for agent4.io, and install it according to the instructions.
Raw Markdown URL for AI: /skills/agent4-io/raw/index.md