Vlak
Description
Accessible React components, tokens, usage guidance, and install commands for product interfaces.
What our measurements say
Vlak is a remote MCP server published at vlak.dev. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 419 ms, placing it among the faster endpoints. It offers a narrow, focused set of 8 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names align with their purposes (e.g., 'list_workflows', 'get_component').
- Descriptions provide contextual usage guidance (e.g., 'authentication remains host responsibility').
Weaknesses
- Incomplete descriptions (e.g., 'get_guide' cuts off mid-sentence).
- Ambiguous parameter details (e.g., 'search_components' term matching rules unclear).
get_guide— Description is truncated, leaving page parameter purpose undefined.get_install— Name implies installation but description conflates component retrieval with installation steps.search_components— Parameter 'term' lacks clarity on matching rules (substring vs. exact match).
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 161ms → warm 157ms (penalty 4ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
list_workflowsList bundled workflow kits and recipes. An optional query matches workflow ID, title, description, components, adapters, and states.
querystring
get_workflowReturn one bundled workflow manifest and its source files. Authentication, authorization, storage, and deployment remain host responsibilities described by the manifest.
idstringrequired
list_componentsEvery component in the catalogue with name, title, description, category, and aliases. Filter by category: actions, forms, navigation, feedback, surfaces, content, icons, charts, patterns, ios, android, ai, health, civic, science, creative, engineering, geospatial, robotics, electronics, microbiology.
categorystring
get_componentThe markdown docs page for a component (install paths, example, props tables, keyboard, accessibility), plus its props as JSON, the CSS-only snippet, the React example, its classes, and aliases. Pass the kebab-case name from list_components or search_components.
namestringrequired
search_componentsFind components by name, title, description, alias (AI Elements, shadcn/ui, Radix, and common names such as PromptInput, Chain of thought, Sonner, Drawer, Combobox), or rs-* class. Spacing, punctuation and capitalization do not affect matching. Returns matches ranked by field.
termstringrequired
get_tokensThe design tokens page: every CSS custom property with its light and dark value and StyleX alias, plus the raw token groups (type scale, grid, radius, motion, breakpoints, control sizes).
get_installThe three ways to install one component (npm package plus import line, Vlak CLI, shadcn CLI) and the CSS-only markup, with its registry dependencies.
namestringrequired
get_guideRead the general guide first for installation and conventions. Select ios or android for browser React components, exact exports and related interface studies; select ai-index for the AI component catalog and optional engine imports, ai for the runnable assistant and integration recipes, ai-parity for AI Elements functional coverage and differences, or agents for machine-readable surfaces and setup.
pagestring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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