io.github.vola-trebla/react-render-profile-mcp
NPM · REACT-RENDER-PROFILE-MCP · SCANNED AUG 3
Decodes React DevTools Profiler exports into render summaries and memoization advice for AI agents.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →
Supply Chain Security87
- No malware found by supply-chain analysis.Pass
- Only part of the dependency tree could be resolved (104 of 108), so this covers what we could see, not the whole tree.Partial
- No install/post-install scripts declared.Pass
- Only part of the dependency tree could be resolved (104 of 108), so this covers what we could see, not the whole tree. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 72 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability81
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1251 tokens (~96/item across 13 items; 13 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
npm · react-render-profile-mcp
claude mcp add vola-trebla-react-render-profile-mcp -- npx -y react-render-profile-mcp
codex mcp add vola-trebla-react-render-profile-mcp -- npx -y react-render-profile-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"vola-trebla-react-render-profile-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"react-render-profile-mcp"
],
"enabled": true
}
}
} openclaw mcp add vola-trebla-react-render-profile-mcp --command npx --arg -y --arg react-render-profile-mcp
mcp_servers:
vola-trebla-react-render-profile-mcp:
command: "npx"
args: ["-y", "react-render-profile-mcp"] {
"mcpServers": {
"vola-trebla-react-render-profile-mcp": {
"command": "npx",
"args": [
"-y",
"react-render-profile-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Aug 26 +40
- Provenance: unverified → fail ▼ security
- Known CVEs: unverified → partial ▲ security
- Install scripts: unverified → pass ▲ security
- Malware scan: unverified → pass ▲ security
- Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet. security
- Tool coverage: 100 → unverified ▼ functional
- Capabilities: pass → unverified ▼ functional
- Maintenance: unverified → pass ▲ functional
- Dependency health: unverified → partial ▲ functional
- License: unverified → pass ▲ functional
- Schema quality: unverified → excellent ▲ functional
- Licence: MIT functional
- 1 Aug 26 +5
- Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
- MCP protocol: unverified → pass ▲ functional
- 31 Jul 26 −3
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 28 Jul 26 −22
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- 27 Jul 26 46
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 3 Aug 2026 · Analysed npm/[email protected]
Provenance none
Ecosystem: npm · Outcome: none
Dependencies 104 packages
104 packages in the resolved dependency tree · 104 deprecated · 30 stale.
The dependency tree was only partially resolved, so these counts may be incomplete.
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.
analyze_compiler_efficacy ~86
Evaluates React Compiler or manual React.memo efficacy by tracking spurious renders. Calculates the Invalidation Index for each component to identify where unstable prop references trigger wasteful renders.
| Name | Type | Req | Description |
|---|---|---|---|
| invalid_threshold | number | — | Minimum invalidation index threshold to report (default: 10) |
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.
audit_compiler_rules ~82
Audits a React component file to check if it violates compiler memoization safety guidelines (e.g., Date.now(), Math.random(), useRef mutations in render, 'use no memo' bails).
| Name | Type | Req | Description |
|---|---|---|---|
| component_name | string | yes | Name of the React component to audit |
| file_path | string | yes | Absolute path to the React component file on disk |
No output schema declared.
No examples provided.
correlate_chrome_trace ~88
Aligns React commits with Chrome Performance trace events (re-layout, paint, style calculations) using blink.user_timing ⚛ markers to calculate Core Web Vitals (INP/CLS) impact.
| Name | Type | Req | Description |
|---|---|---|---|
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
| trace_path | string | yes | Absolute path to Chrome performance timeline trace export (.json) |
No output schema declared.
No examples provided.
diagnose_hydration_and_suspense ~83
Detects server-client hydration mismatches and sequential nested Suspense waterfalls by analyzing mount durations, unmount events, and timelines.
| Name | Type | Req | Description |
|---|---|---|---|
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
| waterfall_threshold_ms | number | — | Timeline delta threshold in ms to detect Suspense waterfalls (default: 100) |
No output schema declared.
No examples provided.
evaluate_external_store_performance ~88
Analyzes useSyncExternalStore performance, identifying selector reference instability and concurrency bypasses where heavy store updates block the high-priority main thread.
| Name | Type | Req | Description |
|---|---|---|---|
| max_blocking_task_ms | number | — | Maximum duration budget in ms for synchronous tasks before flagging bypass (default: 50) |
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.
find_spurious_renders ~123
Finds React components that re-rendered without any meaningful prop, state, context, or hook changes. These are wasted renders caused by unstable references (inline objects/functions/arrays) passed from a parent. Returns component name, total render count, spurious count, and wasted milliseconds. Use to identify the highest-ROI targets for React.memo.
| Name | Type | Req | Description |
|---|---|---|---|
| min_render_count | number | — | Only include components with at least this many total renders (default: 1) |
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.
get_hottest_components ~101
Returns the top N React components ranked by self CPU time (excluding children) across the entire profiling session. Includes total self ms, average per render, and percentage of total profile time. Use to find which components are the most expensive to render, regardless of cause.
| Name | Type | Req | Description |
|---|---|---|---|
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
| top_n | number | — | Number of components to return (default: 10) |
No output schema declared.
No examples provided.
get_render_summary ~87
Returns a high-level overview of a React DevTools Profiler export: total commits, total render time, top 5 slowest components by self time, and total spurious (wasted) render count. Use this first to understand the scale of the performance problem before drilling into specifics.
| Name | Type | Req | Description |
|---|---|---|---|
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.
profile_rsc_stream ~80
Analyzes a React Server Components (RSC) Flight stream text log. Detects bloated chunks (>50KB), sequential Waterfall request bottlenecks, and security hazards like constructor traversing exploits (CVE-2025-55182 / React2Shell).
| Name | Type | Req | Description |
|---|---|---|---|
| stream_payload | string | yes | Raw line-separated Flight stream text payload |
No output schema declared.
No examples provided.
remediate_component ~141
Automatically optimizes a React component's AST by hoisting static declarations, wrapping unstable callbacks/objects in useCallback/useMemo, and wrapping the component in React.memo if the ROI score is above 1.5. Mutates the file on disk.
| Name | Type | Req | Description |
|---|---|---|---|
| component_name | string | yes | Name of the React component to optimize |
| file_path | string | yes | Absolute path to the React component file on disk |
| roi_score | number | yes | Estimated ROI score from profiling (usually 0 to 5) justifying memoization overhead |
| unstable_props | string | yes | Comma-separated or space-separated list of props to memoize/wrap in hooks |
No output schema declared.
No examples provided.
suggest_memoization ~103
Analyzes the profiling data and returns concrete memoization suggestions. Currently detects React.memo candidates: components with spurious renders above the wasted ms threshold. Each suggestion explains why the component re-renders unnecessarily and what to do about it.
| Name | Type | Req | Description |
|---|---|---|---|
| min_wasted_ms | number | — | Only suggest for components wasting more than this many ms total (default: 0) |
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.
trace_render_cascade ~112
For a specific React commit (render cycle), shows what triggered it and lists every component that re-rendered as a result, sorted by actual duration descending. Reveals propagation — e.g. a context update cascading into 40 children. Call get_render_summary first to find total_commits, then use 0-based commit_index.
| Name | Type | Req | Description |
|---|---|---|---|
| commit_index | number | yes | Zero-based index of the commit to inspect |
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.
trace_state_cascade_footprint ~77
Reconstructs the virtual parent/owner tree traversal to measure the depth and consumer count of a state update cascade for a specific commit index.
| Name | Type | Req | Description |
|---|---|---|---|
| commit_index | number | yes | Zero-based index of the commit to trace |
| profile_path | string | yes | Absolute path to the React DevTools Profiler export (.json) |
No output schema declared.
No examples provided.