Cortex RMCP vs Opik MCP
A side-by-side look at the Cortex RMCP and Opik MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Cortex RMCP for monitoring work as a local process; choose Opik MCP for monitoring as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Cortex RMCP when
- You need dedicated capabilities in the Monitoring domain.
- You prefer a local stdio subprocess transport.
Choose Opik MCP when
- You need dedicated capabilities in the Monitoring domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
OPIK_URL, OPIK_API_KEY, COMET_URL_OVERRIDE, OPIK_WORKSPACE, OPIK_MCP_ANALYTICS_SOURCE. - You want tools like
read_skill.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Monitoring | Monitoring |
| Quality signal | 44/100 · Fair | 57/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | API key required |
| Pricing | Not declared | Free |
| Required env vars | None listed | OPIK_URLOPIK_API_KEYCOMET_URL_OVERRIDEOPIK_WORKSPACEOPIK_MCP_ANALYTICS_SOURCE |
| Verified owner | Community listing | Community listing |
| GitHub stars | 4 | 225 |
| Directory activity | 1 views 0 installs 0 upvotes | 3 views 0 installs 0 upvotes |
| Tools | Not listed | 1 |
| Full listing | View Cortex RMCP | View Opik MCP |
Tools & capabilities
Cortex RMCP tools
No tool names declared yet. Check the project README from the listing page.
Opik MCP tools 1
read_skillRead one of the Opik agent skills bundled with this server
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.
Cortex RMCP
{
"mcpServers": {
"cortex-rmcp": {
"command": "npx",
"args": [
"-y",
"@dinglebear/cortex"
]
}
}
}
Opik MCP
{
"mcpServers": {
"comet-ml-opik-mcp": {
"command": "uvx",
"args": [
"opik@latest"
],
"env": {
"OPIK_URL": "YOUR_OPIK_URL_HERE",
"OPIK_API_KEY": "YOUR_OPIK_API_KEY_HERE",
"COMET_URL_OVERRIDE": "YOUR_COMET_URL_OVERRIDE_HERE",
"OPIK_WORKSPACE": "YOUR_OPIK_WORKSPACE_HERE",
"OPIK_MCP_ANALYTICS_SOURCE": "YOUR_OPIK_MCP_ANALYTICS_SOURCE_HERE"
}
}
}
}
Frequently asked questions
Cortex RMCP is categorized under Monitoring and uses a local stdio subprocess. Opik MCP belongs to Monitoring and uses a local stdio subprocess. Pick Cortex RMCP for monitoring work and Opik MCP for monitoring.
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.
Cortex RMCP has no declared pricing — check the project's own site. Opik MCP is listed as free. Auth: api key required. 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 cortex-rmcp and comet-ml-opik-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Cortex RMCP has a quality signal of 44/100 (Fair) with 1 views, 0 installs and 4 GitHub stars. Opik MCP has 57/100 (Good) with 3 views, 0 installs and 225 GitHub stars.