Master Tester MCP Server
Local web UI to connect, inspect and test any MCP server — stdio, Streamable HTTP & SSE, with auth prompts, schema-driven tool forms, elicitation, linting and a live JSON-RPC log.
context tax
pending
security
100/100
cold start
pending
freshness
Active15d ago
Our reading of Master Tester, from the data
Master Tester is an MCP server from simplymanas.
We haven't measured its tool list yet, so its token cost is unknown.
Maintenance is active: the last public signal was 15 days ago (2026-10-03).
It runs locally on your machine over stdio.
Install Master Tester MCP server
Install in Claude Code
claude mcp add master-tester -- npx -y mcp-master-testerInstall in Cursor
{
"mcpServers": {
"master-tester": {
"command": "npx",
"args": [
"-y",
"mcp-master-tester"
]
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"master-tester": {
"command": "npx",
"args": [
"-y",
"mcp-master-tester"
]
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"master-tester": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"mcp-master-tester"
]
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"master-tester": {
"command": "npx",
"args": [
"-y",
"mcp-master-tester"
]
}
}
}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 15d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-10-03 · 15d ago · GitHub
Latest release
2026-10-03 · 15d ago · GitHub · v1.0.0
Package published
no data · npm/PyPI
Registry entry updated
no data · official registry
FAQ
›How do I install the Master Tester MCP server in Claude Code?
Run: claude mcp add master-tester -- npx -y mcp-master-tester. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Master Tester require an API key?
No required environment variables are declared in its published metadata.
›Can I use Master Tester as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Master Tester 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.