MCP Scroll Animation Analyzer
Analyzes scroll-triggered animations on any webpage using Playwright, extracting GSAP, ScrollTrigger, Lenis, and CSS code via AST and runtime detection.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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rob-kingsbury
Source: Glama
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
open_pageOpen a webpage in headless browser for analysis. This initializes the browser and navigates to the URL.
scroll_and_recordScroll through the entire page while recording video and capturing scroll-triggered animations.
extract_animation_codeExtract GSAP, ScrollTrigger, and Lenis code using AST parsing. Much more reliable than regex.
interact_with_pagePerform interactions on the page (click, hover, scroll to element, type).
get_element_animationsGet detailed animation information for a specific element.
capture_current_stateCapture a screenshot and animation state at the current scroll position.
get_scroll_triggersGet all ScrollTrigger instances on the page with their configurations.
analyze_lenisAnalyze Lenis smooth scroll configuration and behavior.
generate_reportGenerate a comprehensive report of the scroll animation analysis.
close_browserClose the browser and clean up resources.
set_output_directorySet the directory where analysis output will be saved.
deep_script_analysisPerform deep analysis of all JavaScript for animation patterns.
watch_elementWatch a specific element for style/transform changes during scroll.
get_animation_cssExtract all CSS animations and keyframes from the page stylesheets.
trace_animation_executionInject tracing to capture GSAP calls in real-time during scroll.
export_replicable_codeGenerate standalone code to recreate the observed animations.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
16/16 tools missing one or more hints — open_page (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); scroll_and_record (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); extract_animation_code (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +13 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tool test coverage
Only 0/16 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
Production dependencies are patched
0 critical, 2 high severity in production deps — @modelcontextprotocol/sdk@1.25.1 (high), @modelcontextprotocol/sdk@1.25.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
1 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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