Perfonext Render MCP

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Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/souvikdu-perfonext-render-mcp

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What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

6 read · 2 write · 0 delete · 2 not yet classified

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Node.js package

Tools (10)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• begin_render_analysisBegin Render Analysis

  Entry point for render profiling. Choose an approach: live — react-scan/lite streams events in real time; exact rerender causes, source locations, changeDescription. manual — no install needed; user exports a JSON from the React DevTools Profiler tab and shares the file path. Ask the user which approach they prefer before calling this tool.

• compare_rendersCompare Renders

  Diff two loaded render profiles and rank the biggest regressions, improvements, additions, and removals.

• get_captured_rendersGet Captured Renders

  Optional diagnostic: peek at the live progress of a render-capture session without stopping it. Returns commit count, components seen, whether actualDuration is populating, and an unknownEvents count (non-zero = instrumentation may not be wired correctly). Only call this if something seems wrong — it is not a required step before stop_render_capture.

• get_hot_commitsGet Hot Commits

  Rank the most expensive commits in a loaded render profile and show the top components inside each spike.

• get_render_summaryGet Render Summary

  Summarize the loaded Next.js render profile, including top components by render cost and detected render issues (rerender storms, commit spikes).

• get_rerender_causesGet Rerender Causes

  Highlight components with repeated rerenders and explain likely causes using heuristics derived from the exported profile.

• get_slow_componentsGet Slow Components

  Return the slowest components in a loaded Next.js render profile, ranked by total actual render time.

• load_render_profileLoad Render Profile

  Load a React DevTools Profiler JSON export. This is the entry point for the manual profiling path: open React DevTools in the browser → Profiler tab → Record → interact → Stop → Export JSON → share the file path here. Returns a profileId for use with get_render_summary, get_slow_components, get_rerender_causes, and the other analysis tools.

• run_render_captureRun Render Capture

  Called after instrumentation is wired up (steps 1–3 of begin_render_analysis). Ask the user how they want to generate renders before calling this tool: manual-interaction — start the dev server and the user clicks through the app. test-suite — run an existing automated test suite against the running app.

• stop_render_captureStop Render Capture

  Stop a live render-capture session, finalize the buffered events into a render profile, and return a profileId you can use with get_render_summary, get_slow_components, get_rerender_causes, and compare_renders.

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Last commit

Oct 7, 2026 (22 days ago)

Last release

Sep 11, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.souvikdu/perfonext-render-mcp

Version

0.5.2

Auth

No auth

Packages

npm @perfonext/render-mcp

License

MIT

Repository

github.com/souvikdu/perfonext-render-mcp

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql