Today we move to Multi-Skill Collaboration + MCP Composition, which is important because it connects the Skill design capabilities with MCP Tools / Servers.
We have already learned that a Skill is a capability/work procedure, while an MCP Tool is an external execution capability.
Skill 是“能力/工作方法”，MCP Tool 是“外部执行能力”。
This topic addresses a practical problem: a real Agent cannot realistically have only one capability or call only one Tool.
一个真实 Agent 不可能只会一种能力，也不可能只调用一个 Tool。
Multi-Skill = an Agent has multiple specialized capabilities and selects and combines them according to the task.
Multi-Skill = 一个 Agent 拥有多个专业能力，并根据任务选择和组合这些能力。
MCP Composition = Skills do not implement every external operation themselves; they obtain external capabilities such as databases, APIs, filesystems, and Databricks through MCP.
MCP Composition = Skill 不直接实现所有外部操作，而是通过 MCP 获得数据库、API、文件系统、Databricks 等外部能力。
So, we can simply think this:
Skill = “我知道怎么做”
Skill = “I know how to do it.”
MCP Tool = “我有办法真正去做”
MCP Tool = “I have the ability to actually do it.”
LLM/Agent = “我决定什么时候做什么”
LLM/Agent = “I decide what to do and when to do it.”
Imagine that you have an AI Data Engineering Team, there are three experts in this team. They are: SQL Developer, Data Quality Engineer and Pipeline Auditor.
| Capabilities | Skill | MCP |
|---|---|---|
| SQL Developer | SQL Generation Skill | Databricks MCP |
| Data Quality Engineer | DQ Report Skill | Databricks MCP |
| Pipeline Auditor | Pipeline Audit Skill | Databricks MCP |
The team receiced this “Inspect the sales_orders pipeline, identify data-quality issues, generate SQL validations, and give me a report.”
“检查 sales_orders pipeline，找出数据质量问题，生成 SQL 验证，并给我一份报告。”
Agent may work this way:
User Request
│
▼
Agent
│
├── Pipeline Audit Skill
│ │
│ └── MCP → Databricks
│
├── SQL Generator Skill
│ │
│ └── MCP → Databricks
│
└── DQ Report Skill
│
└── MCP → Databricks
The Agent does not put all logic into one giant Skill. Instead, each Skill focuses on one clearly defined responsibility.
Agent 不是把所有逻辑塞进一个巨大 Skill。而是让每个 Skill 专注一个明确的职责。