Skill Cortex Server vs Skill Builder MCP
A side-by-side look at the Skill Cortex Server and Skill Builder MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Skill Cortex Server for coding agents work as a local process; choose Skill Builder MCP for coding agents as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Skill Cortex Server when
- You need dedicated capabilities in the Coding Agents domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You have the keys it needs:
SKILL_CORTEX_ROOTS, SKILL_CORTEX_CACHE_PATH, SKILL_CORTEX_TAGS_PATH. - You want tools like
path, query, tags.
Choose Skill Builder MCP when
- You need dedicated capabilities in the Coding Agents domain.
- You prefer a local stdio subprocess transport.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Coding Agents | Coding Agents |
| Quality signal | 52/100 · Good | 41/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | SKILL_CORTEX_ROOTSSKILL_CORTEX_CACHE_PATHSKILL_CORTEX_TAGS_PATH | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 24 | 0 |
| Directory activity | 3 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 16 | Not listed |
| Full listing | View Skill Cortex Server | View Skill Builder MCP |
Tools & capabilities
Skill Cortex Server tools 16
pathquerytagsskill_idsectionmax_linesmodeupdatesdescriptioninstructionslicensemetadata- +4 more on the listing page
Skill Builder MCP tools
No tool names declared yet. Check the project README from the listing page.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Skill Cortex Server
{
"mcpServers": {
"sim-xia-skill-cortex-server": {
"command": "uvx",
"args": [
"skill-cortex-lite"
],
"env": {
"SKILL_CORTEX_ROOTS": "YOUR_SKILL_CORTEX_ROOTS_HERE",
"SKILL_CORTEX_CACHE_PATH": "YOUR_SKILL_CORTEX_CACHE_PATH_HERE",
"SKILL_CORTEX_TAGS_PATH": "YOUR_SKILL_CORTEX_TAGS_PATH_HERE"
}
}
}
}
Skill Builder MCP
{
"mcpServers": {
"skill-builder-mcp": {
"command": "npx",
"args": [
"-y",
"@dmzagent/skill-builder"
]
}
}
}
Frequently asked questions
Skill Cortex Server is categorized under Coding Agents and uses a local stdio subprocess. Skill Builder MCP belongs to Coding Agents and uses a local stdio subprocess. Pick Skill Cortex Server for coding agents work and Skill Builder MCP for coding agents.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Skill Cortex Server is listed as free. Auth: no auth required. Skill Builder MCP has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add sim-xia-skill-cortex-server and skill-builder-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Skill Cortex Server has a quality signal of 52/100 (Good) with 3 views, 0 installs and 24 GitHub stars. Skill Builder MCP has 41/100 (Fair) with 1 views, 0 installs and 0 GitHub stars.