Reason vs Cursor MCP
A side-by-side look at the Reason and Cursor MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
R
ReasonCoding AgentsStart and manage Reason cloud coding agents, projects and sessions from any MCP client.36FairAuth: oauth 2.0C
Cursor MCPCoding Agents · Local subprocess (stdio)Cursor's agent (cursor-agent CLI) through MCP: any model your plan offers, resumable sessions.52GoodAuth: not declaredVerdict: choose Reason for coding agents work; choose Cursor 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?
RChoose Reason when
- You need dedicated capabilities in the Coding Agents domain.
- Its auth model fits you: OAuth 2.0.
CChoose Cursor MCP when
- You need dedicated capabilities in the Coding Agents domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
CURSOR_MAX_CONCURRENCY, CURSOR_ALLOW_YOLO, CURSOR_SANDBOX, CURSOR_KILL_GRACE_MS. - You want tools like
cursor_agent, cursor_reply, cursor_models.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | R Reason | C Cursor MCP |
|---|---|---|
| Category | Coding Agents | Coding Agents |
| Quality signal | 36/100 · Fair | 52/100 · Good |
| Install command | Not confirmed yet | Confirmed |
| Transport | — | Local subprocess (stdio) |
| Auth | OAuth 2.0 | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | CURSOR_MAX_CONCURRENCYCURSOR_ALLOW_YOLOCURSOR_SANDBOXCURSOR_KILL_GRACE_MS |
Tools & capabilities
Reason tools
No tool names declared yet. Check the project README from the listing page.
Cursor MCP tools 5
cursor_agentExecute a prompt using Cursor's AI agentcursor_replyContinue an existing agent sessioncursor_modelsList the model ids the installed CLI offerscursor_sessionsList agent sessions (this server instance)cursor_healthCheck installation, auth, and config
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.
Reason
No confirmed install command for Reason yet — follow the setup steps linked from its listing page rather than a guessed package name.
Cursor MCP
{
"mcpServers": {
"cursor-mcp": {
"command": "npx",
"args": [
"-y",
"@qmediat.io/cursor-mcp"
],
"env": {
"CURSOR_MAX_CONCURRENCY": "YOUR_CURSOR_MAX_CONCURRENCY_HERE",
"CURSOR_ALLOW_YOLO": "YOUR_CURSOR_ALLOW_YOLO_HERE",
"CURSOR_SANDBOX": "YOUR_CURSOR_SANDBOX_HERE",
"CURSOR_KILL_GRACE_MS": "YOUR_CURSOR_KILL_GRACE_MS_HERE"
}
}
}
}
Frequently asked questions
Reason is categorized under Coding Agents and uses an install path we have not confirmed yet. Cursor MCP belongs to Coding Agents and uses a local stdio subprocess. Pick Reason for coding agents work and Cursor 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. Reason has no confirmed install command yet — follow its own setup instructions.
Reason has no declared pricing — check the project's own site. Auth: oauth 2.0. Cursor 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 reason and cursor-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Reason has a quality signal of 36/100 (Fair) with 0 views, 0 installs and 1 GitHub stars. Cursor MCP has 52/100 (Good) with 0 views, 0 installs and 1 GitHub stars.