Perfonext Profiler MCP server

by souvikdu·io.github.souvikdu/perfonext-profiler-mcp·v0.7.3

MCP server for analyzing V8/Chrome CPU profiles with line-level tick attribution.

A92/100grade A

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A92/100

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If you have run it, two minutes of your experience saves the next person an afternoon.

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Read from the package source without running it. The installed server may list more.

compare_profiles
Compare two loaded CPU profiles side-by-side. Shows functions that got slower/faster and new/removed hotspots.
explain_function
Returns detailed timing info for a specific function: self-time, total-time, callers, and callees. Use this to understand why a function is slow.
get_hotspots
Returns the top N functions by self-time (CPU time spent directly in the function, not its callees). Use this to find performance bottlenecks.
get_package_costs
Aggregate CPU self-time by npm package. Identifies which third-party
get_profile_summary
Returns an overview of a loaded profile: duration, sample count, top-level call tree (filtered to functions >0.1% of total time), and idle time percentage. For large profiles, the call tree is limited to depth 2 and top 20 children per node to keep output manageable. Also lists all loaded profiles if no ID is given.
how_to_collect
Returns a ready-to-run command and step-by-step recipe for capturing a V8
load_profile
Parse and load a V8/Chrome CPU profile from disk. Supports both .cpuprofile files and Chrome DevTools Trace JSON exports. Returns a profile ID for use with other tools.
read_source_context
Read the actual source code for a hot function and annotate each line with
suggest_optimizations
Analyzes the profile and returns structured optimization suggestions for the hottest

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

no findings

Code scan33 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 0 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y @perfonext/profiler-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add perfonext-profiler-mcp -- npx -y @perfonext/profiler-mcp

Is Perfonext Profiler MCP server safe?: Yes, by our scan: it is graded A (92/100). Read the Perfonext Profiler MCP safety report
How do I install Perfonext Profiler MCP?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Perfonext Profiler MCP need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Perfonext Profiler MCP maintained?: The last commit was in the last day (2026-09-19). The latest release is v0.7.3.