Runtime MCP Server
Reactive Skills Architecture (RSA) core runtime — FSM engine, event store, guard evaluator, projection engine, MCP server
context tax
pending
security
100/100
cold start
pending
freshness
Active7d ago
Our reading of Runtime, from the data
Runtime is an MCP server from reactive-skills.
We haven't measured its tool list yet, so its token cost is unknown.
Maintenance is active: the last public signal was 7 days ago (2026-10-12).
It runs locally on your machine over stdio.
Install Runtime MCP server
Install in Claude Code
claude mcp add runtime-reactive-skills -- npx -y @reactive-skills/runtimeInstall in Cursor
{
"mcpServers": {
"runtime-reactive-skills": {
"command": "npx",
"args": [
"-y",
"@reactive-skills/runtime"
]
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"runtime-reactive-skills": {
"command": "npx",
"args": [
"-y",
"@reactive-skills/runtime"
]
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"runtime-reactive-skills": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@reactive-skills/runtime"
]
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"runtime-reactive-skills": {
"command": "npx",
"args": [
"-y",
"@reactive-skills/runtime"
]
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
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 7d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-10-12 · 7d ago · GitHub
Latest release
2026-10-06 · 12d ago · GitHub · v0.19.0
Package published
no data · npm/PyPI
Registry entry updated
no data · official registry
FAQ
›How do I install the Runtime MCP server in Claude Code?
Run: claude mcp add runtime-reactive-skills -- npx -y @reactive-skills/runtime. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Runtime require an API key?
No required environment variables are declared in its published metadata.
›Can I use Runtime as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Runtime in the official MCP registry?
No. It was indexed from npm.
Sources and method
- GitHub repository
- fetched 2026-10-19
- Package registry (npm / PyPI)
- listed
- 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.