Agent skill

MCP Server

Guide for creating new MCP server integrations. An agent skill from WellApp-ai/Well.

Install MCP Server

skills CLI

$ npx skills add WellApp-ai/Well --skill mcp-server -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install WellApp-ai/Well mcp-server --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cursor-rules/skills/mcp-server .claude/skills/mcp-server && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "mcp-server" agent skill from https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server into .claude/skills/mcp-server/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mcp-server", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add WellApp-ai/Well --skill mcp-server -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install WellApp-ai/Well mcp-server --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .agents/skills && cp -r skills-src/cursor-rules/skills/mcp-server .agents/skills/mcp-server && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "mcp-server" agent skill from https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server into .agents/skills/mcp-server/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mcp-server", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add WellApp-ai/Well --skill mcp-server -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install WellApp-ai/Well mcp-server --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/cursor-rules/skills/mcp-server .cursor/skills/mcp-server && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "mcp-server" agent skill from https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server into .cursor/skills/mcp-server/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mcp-server", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/WellApp-ai/Well.git --path cursor-rules/skills/mcp-server

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add WellApp-ai/Well --skill mcp-server -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install WellApp-ai/Well mcp-server --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/cursor-rules/skills/mcp-server .gemini/skills/mcp-server && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "mcp-server" agent skill from https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server into .gemini/skills/mcp-server/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mcp-server", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install WellApp-ai/Well mcp-server

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add WellApp-ai/Well --skill mcp-server -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .github/skills && cp -r skills-src/cursor-rules/skills/mcp-server .github/skills/mcp-server && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "mcp-server" agent skill from https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server into .github/skills/mcp-server/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mcp-server", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add WellApp-ai/Well --skill mcp-server -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install WellApp-ai/Well mcp-server --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/WellApp-ai/Well.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/cursor-rules/skills/mcp-server .opencode/skills/mcp-server && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "mcp-server" agent skill from https://github.com/WellApp-ai/Well/tree/main/cursor-rules/skills/mcp-server into .opencode/skills/mcp-server/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mcp-server", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: mcp-server
GitHub stars: 345
Token cost: ~679 tokens
SKILL.md length: 218 words
Files: 1
Skills in repo: 36
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Guide for creating new MCP server integrations. An agent skill from WellApp-ai/Well.

Works in 3 steps: Read tool descriptor before calling → Use CallMcpTool with server, toolName,… → Handle response appropriately
Tasks that involve MCP servers
SKILL.md covers MCP Folder Structure, Tool Descriptor Format, Usage Pattern and Example Call, plus 5 more sections
Reaches service.com; needs API_KEY

What it does

MCP Server is an agent skill from WellApp-ai/Well. Guide for creating new MCP server integrations

Its SKILL.md is about 680 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol and Figma. The repository describes itself as: No more Sundays on Finance. We build the infrastructure that retrieves, processes, and routes your financial and business data to your FinOps stack, so founders can ship, not… The licence is MIT.

When your agent uses it

Tasks that involve MCP servers

Example prompts

“/mcp-server”

Requirements

A credential in API_KEY

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

Read tool descriptor before calling
Use CallMcpTool with server, toolName, arguments
Handle response appropriately

What it can do on your machine

Read from SKILL.md and the folder at commit c740217. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- service.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

MCP Server loads about 679 tokens when it runs. Until then it costs about 14 tokens; SKILL.md has 218 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~14
When it runs · the whole SKILL.md, loaded when a task matches: ~679

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from WellApp-ai/Well at commit c740217, republished under its MIT licence (© WellApp-ai). 218 words, ~679 tokens.

Download SKILL.mdSave it as .claude/skills/mcp-server/SKILL.md (or your agent's skills folder).

name: mcp-server
description: Guide for creating new MCP server integrations

MCP Server Creation Guide

Use this skill when creating a new MCP server integration.

MCP Folder Structure

MCPs live in: ~/.cursor/projects/<project>/mcps/<server-name>/

mcps/
├── user-notion/
│   └── tools/
│       ├── API-retrieve-a-page.json
│       └── ...
├── cursor-ide-browser/
│   └── tools/
│       ├── browser_navigate.json
│       └── ...
└── user-n8n-mcp/
    └── tools/
        └── ...

Tool Descriptor Format

Each tool is a JSON file:

json

{
  "name": "tool-name",
  "description": "What this tool does",
  "arguments": {
    "type": "object",
    "properties": {
      "param1": { "type": "string", "description": "..." }
    },
    "required": ["param1"]
  }
}

Usage Pattern

Read tool descriptor before calling
Use CallMcpTool with server, toolName, arguments
Handle response appropriately

Example Call

CallMcpTool:
  server: "user-notion"
  toolName: "API-retrieve-a-page"
  arguments: { "page_id": "abc123" }

Existing MCPs Reference

MCP	Capabilities
user-notion	Page/block CRUD, search, comments
cursor-ide-browser	Navigation, clicks, screenshots, console
user-n8n-mcp	Workflow search, details, execution
user-context7	Library docs lookup
figma	Design specs, code generation from frames

Creating a New MCP

Create folder: mcps/<server-name>/tools/
Add tool descriptors as JSON files
Configure server in ~/.cursor/mcp.json
Restart Cursor (Cmd+Shift+P > "Reload Window")
Test with CallMcpTool

Authentication Patterns

Pattern 1: API Token (env block)

For MCPs that use API keys (Notion, n8n):

json

"mcp-name": {
  "command": "npx",
  "args": ["-y", "@package/mcp-server"],
  "env": {
    "API_KEY": "your-token-here"
  }
}

Pattern 2: URL-based (no auth)

For MCPs that connect to local servers (Figma desktop):

json

"mcp-name": {
  "url": "http://127.0.0.1:PORT/mcp"
}

Pattern 3: OAuth (remote URL)

For MCPs that use browser OAuth (Figma remote):

json

"mcp-name": {
  "url": "https://service.com/mcp"
}

After adding, click "Connect" in Cursor MCP settings to authorize.

Troubleshooting

Installation loops infinitely:

Cancel and manually edit ~/.cursor/mcp.json
Add config block directly, then restart Cursor

MCP not appearing:

Check JSON syntax is valid
Verify package name is correct
Restart Cursor after changes

Best Practices

Always read tool schema before calling
Handle errors gracefully
Use descriptive tool names
Document required vs optional parameters

Files

Just SKILL.md in cursor-rules/skills/mcp-server of WellApp-ai/Well.

Open the folder on GitHubat commit c740217

Compare with similar skills

MCP Server next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

MCP Server compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
MCP Server this skillWellApp-ai/Well	345	—	~679	Automated safety check: Pass	MIT	yesterday
MCP SDK Auditawdr74100/figwright	995	—	~4.1k	Automated safety check: Pass	MIT	today
Loora Design Guidelassejlv/loora	140	—	~2.4k	Automated safety check: Pass	AGPL-3.0	11 days ago
Igniteui Angular Figma To AppIgniteUI/igniteui-angular	599	—	~6.4k	Automated safety check: Pass	MIT	today
Igniteui Wc Figma To AppIgniteUI/igniteui-webcomponents	170	—	~7.2k	Automated safety check: Pass	MIT	today
MCP Server Builderanthropics/skills	180k	63 repos	~2.3k	Automated safety check: Pass	Apache-2.0	today

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Questions about MCP Server

What does MCP Server do?

Guide for creating new MCP server integrations. An agent skill from WellApp-ai/Well. MCP Server is an agent skill from WellApp-ai/Well.

When should I use MCP Server?

MCP Server fits situations like: tasks that involve MCP servers.

How do I install MCP Server in Claude Code?

Run `npx skills add WellApp-ai/Well --skill mcp-server -a claude-code`. Or copy the skill folder (cursor-rules/skills/mcp-server in WellApp-ai/Well) into .claude/skills/mcp-server in your project. Claude Code loads it when a task matches its description.

How do I install MCP Server in Codex?

Run `npx skills add WellApp-ai/Well --skill mcp-server -a codex`. Or copy the skill folder (cursor-rules/skills/mcp-server in WellApp-ai/Well) into .agents/skills/mcp-server in your project. Codex loads it when a task matches its description.

Can I use MCP Server in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add WellApp-ai/Well --skill mcp-server -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mcp-server, .gemini/skills/mcp-server, .github/skills/mcp-server and .opencode/skills/mcp-server in your project.

What does MCP Server need to run?

Going by SKILL.md and its folder, MCP Server needs credentials named API_KEY. Our summary lists: A credential in API_KEY.

Does MCP Server access the network?

SKILL.md names 1 domain. In commands or code: service.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is MCP Server safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does MCP Server use?

MCP Server is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does MCP Server use?

About 679 tokens (SKILL.md is roughly 2.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to MCP Server?

Skills that share tags, products or a category with MCP Server: MCP SDK Audit (awdr74100/figwright, 995 stars), Loora Design Guide (lassejlv/loora, 140 stars), Igniteui Angular Figma To App (IgniteUI/igniteui-angular, 599 stars) and Igniteui Wc Figma To App (IgniteUI/igniteui-webcomponents, 170 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains MCP Server?

WellApp-ai (a GitHub organization) maintains it in WellApp-ai/Well, which has 345 GitHub stars. The repository holds 36 skills in this directory. The repository was last updated on October 7, 2026.

Source: WellApp-ai/Well on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install MCP Server

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

MCP Server Creation Guide

MCP Folder Structure

Tool Descriptor Format

Usage Pattern

Example Call

Existing MCPs Reference

Creating a New MCP

Authentication Patterns

Pattern 1: API Token (env block)

Pattern 2: URL-based (no auth)

Pattern 3: OAuth (remote URL)

Troubleshooting

Best Practices

Files

Compare with similar skills

Similar skills

More from WellApp-ai/Well

Related

Questions about MCP Server