Two separate Anthropic-ecosystem concepts get conflated constantly: Claude Skills and the Model Context Protocol. They’re not competing features and they’re not the same thing — they solve two different halves of “how does an AI agent do real work on my WordPress site.”
What Claude Skills Are
A Skill is a packaged, reusable set of instructions, and sometimes scripts, that Claude loads on demand for a specific kind of task — a repo-specific deployment checklist, a house style guide for content, a domain playbook for a recurring workflow. Instead of re-explaining the same process in every conversation, the Skill is written once and Claude reads it when the task matches. It’s how an agent scales expertise across many similar tasks without a human re-teaching it each time.
What a Skill Actually Looks Like
Structurally, a Skill is just a folder with a markdown file at its core: a short frontmatter block (a name and a one-line description of when this Skill applies) followed by the actual instructions in plain markdown — the process, the rules, the examples. Claude reads the frontmatter first to decide relevance, then loads the full body only when the current task matches. A Skill folder can also bundle scripts or reference files the instructions point to, so it isn’t limited to prose alone. This is deliberately low-tech: no special runtime, no proprietary format, just structured markdown a team can write, version, and review the same way they’d review any other documentation.
What MCP Is
The Model Context Protocol is the connection layer: it standardizes how Claude (or any compatible model) reaches external tools and data — your WordPress REST API, a database, a file system, a WordPress MCP server exposing the Abilities API. Where a Skill is knowledge and process, MCP is plumbing and access.
Also Read: How to Set Up a WordPress MCP Server, Step by Step — the MCP half of this picture, applied directly to WordPress.
How They Combine in Practice
A realistic setup: a Skill defines your team’s exact SEO-writing process, ship-gate checklist, and product facts for a specific WordPress site, while an MCP connection to that same site gives Claude the actual read/write access to publish, update meta, or pull live data while following that Skill. Neither one substitutes for the other — a Skill with no MCP connection can plan and draft but not touch the live site; an MCP connection with no Skill can technically read/write but without the domain-specific process and standards a team actually wants followed.
Why This Matters for a WordPress Team Specifically
If your team is using Claude (via Claude Code, an IDE integration, or a similar setup) to help manage a WordPress site, the Skill layer is where your team’s actual standards live — brand voice, categories, shortcode conventions, ship-gate checks — while the MCP/Abilities layer is what lets those standards actually get executed against the live site instead of staying theoretical.
Also Read: Nexter Abilities Explained: The WordPress Abilities API Inside Nexter Blocks — the specific WordPress-side abilities a Claude MCP connection can call on a Nexter site.
A Practical Starting Point for a Team
- Write your first Skill around your single most-repeated task (a specific content format, a recurring audit, a publishing checklist) rather than trying to cover everything at once.
- Keep the Skill’s instructions specific and concrete — exact category IDs, exact shortcode syntax, exact required blocks — the same level of detail you’d give a new hire, not a vague style guide.
- Add the MCP connection only once the Skill itself is solid; a well-written Skill with no live access still saves real time on drafting and planning.
- Version the Skill file the same way you’d version any other team documentation, and update it when your process actually changes rather than letting it drift out of sync.
FAQ
Is a Claude Skill the same thing as an MCP server?
No. A Skill packages instructions and process; an MCP server (or connection) provides live access to tools and data. They’re complementary, not interchangeable.
Do I need to enable MCP for Skills to work at all?
No, a Skill can guide drafting, planning, and review-only tasks without any live site connection. MCP becomes necessary once the task requires actually reading or writing to your WordPress site.
Is this specific to Nexter, or does it apply to any WordPress site?
The Skills/MCP distinction is general to how Claude works, not Nexter-specific. Nexter’s own Abilities implementation is one concrete example of the MCP-connected side of this on a WordPress site.
Do I need to write code to create a Skill?
No, at its core a Skill is a markdown file with a small frontmatter block; writing one is closer to writing documentation than writing code, though a Skill folder can optionally bundle scripts if a task genuinely needs them.
Conclusion
Skills and MCP solve different halves of the same problem: one carries your team’s process and standards, the other carries the access to actually execute on them. A WordPress team getting real value from Claude needs both pieces working together, not just one.
Suggested Reading
- How to Set Up a WordPress MCP Server, Step by Step
- Nexter Abilities Explained: The WordPress Abilities API Inside Nexter Blocks
- AI Agents and Your WordPress Site: What They Can Actually Do in 2026
