Reason MCP Server
by reason-machinesio.github.reason-machines/reasonv1.0.0
Start and manage Reason cloud coding agents, projects and sessions from any MCP client.
context tax
needs auth
security
100/100
cold start
hosted
freshness
Active3d ago
Our reading of Reason, from the data
Reason is an MCP server from reason-machines, listed in the official MCP Registry.
Its endpoint requires sign-in or an API key just to list tools, so we haven't measured its token cost; we never use real credentials.
Maintenance is active: the last public signal was 3 days ago (2026-10-16).
It runs as a hosted endpoint, so there is nothing to install.
Install Reason MCP server
Install in Claude Code
claude mcp add --transport http reason-plugins https://mcp.reasonmachines.com/mcpInstall in Cursor
{
"mcpServers": {
"reason-plugins": {
"url": "https://mcp.reasonmachines.com/mcp"
}
}
}Install in Claude Desktop
{
"mcpServers": {
"reason-plugins": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.reasonmachines.com/mcp"
]
}
}
}Or add it as a custom connector under Settings → Connectors. The config above bridges via mcp-remote.
Install in VS Code
{
"servers": {
"reason-plugins": {
"type": "http",
"url": "https://mcp.reasonmachines.com/mcp"
}
}
}Install in Windsurf
{
"mcpServers": {
"reason-plugins": {
"serverUrl": "https://mcp.reasonmachines.com/mcp"
}
}
}Remote endpoints
- streamable-http
https://mcp.reasonmachines.com/mcp
Security signals
100/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.
Deductions
No findings from the checks that ran.
Checks
- ✓Repository hygiene (archived, activity, license, security policy)
- ○Package metadata (install scripts, provenance) — pending
- ○Tool descriptions (prompt-injection and hidden-text heuristics) — pending
- ○Source scan (secrets, CVEs, risky code) by vectra-guard — pending
Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules
Freshness
Active — last maintenance signal 3d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-10-16 · 3d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-11 · 7d ago · official registry · v1.0.0
FAQ
›How do I install the Reason MCP server in Claude Code?
Run: claude mcp add --transport http reason-plugins https://mcp.reasonmachines.com/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Reason require an API key?
No required environment variables are declared in its published metadata.
›Can I use Reason as a remote (hosted) MCP server?
Yes. It is a hosted MCP server; connect to its URL with any client that supports remote MCP.
›Is Reason in the official MCP registry?
Yes, as io.github.reason-machines/reason.
Sources and method
- Official MCP Registry entry
- updated 2026-10-11
- GitHub repository
- fetched 2026-10-19
- Security signals, computed by us
- 2026-10-19
- Last checked against all sources
- 2026-10-19
The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.