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Uses MCP's server initialization pattern to establish bidirectional communication channels between LLM clients and the Preact component tree, enabling declarative UI composition for tool interfaces. The server registers Preact components as MCP resources that can be dynamically rendered and updated based on client requests.","intents":["Set up a new MCP server that uses Preact components for defining tool UIs","Create a lightweight server with minimal boilerplate for prototyping MCP-based applications","Establish the foundational server infrastructure needed to expose Preact-based tools to Claude or other MCP clients"],"best_for":["developers building lightweight MCP servers with component-driven UIs","teams prototyping interactive tools for Claude integration","engineers familiar with Preact who want to avoid React's overhead in server contexts"],"limitations":["No built-in state persistence — component state is ephemeral unless explicitly managed","Limited to Preact's rendering model; complex server-side rendering patterns may require custom middleware","No automatic hot-reloading during development; requires manual server restart for component changes"],"requires":["Node.js 16+","@modelcontextprotocol/sdk package","Preact 10.x or higher","TypeScript 4.5+ (if using TypeScript)"],"input_types":["MCP request objects (tool calls, resource queries)","Preact component definitions (JSX or h() syntax)"],"output_types":["MCP response objects","rendered HTML/component output","serialized component state"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_1","uri":"capability://tool.use.integration.tool.definition.and.registration.via.preact.components","name":"tool definition and registration via preact components","description":"Allows developers to define MCP tools as Preact components with props mapping to tool parameters and component output mapping to tool results. The server introspects component signatures to auto-generate MCP tool schemas, eliminating manual schema duplication. Tool invocation triggers component rendering with parameters as props, and the rendered output is serialized back as the MCP tool result.","intents":["Define a tool's UI and behavior in a single Preact component without writing separate schema definitions","Automatically generate MCP tool schemas from Preact component prop types","Invoke tools by rendering Preact components with parameters as props and returning rendered output"],"best_for":["developers who prefer component-driven tool definitions over JSON schema writing","teams building multiple related tools that share UI patterns","rapid prototyping scenarios where schema-first design adds friction"],"limitations":["Schema generation from component props may not capture complex validation rules; custom schema overrides may be needed","Rendering-based tool execution adds latency compared to direct function calls (~50-100ms per tool invocation)","No built-in support for streaming tool results; each tool invocation must complete before returning"],"requires":["Preact component with typed props (TypeScript recommended)","MCP server instance with tool registration handler","Component props must be JSON-serializable"],"input_types":["Preact component definitions","component prop objects (tool parameters)"],"output_types":["MCP tool schema objects","rendered component output (HTML/text)","tool result objects"],"categories":["tool-use-integration","code-generation-editing"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_2","uri":"capability://tool.use.integration.resource.exposure.through.preact.component.rendering","name":"resource exposure through preact component rendering","description":"Exposes Preact components as MCP resources that clients can request and receive as rendered output. The server maintains a registry of component-based resources, handles client resource requests by rendering the corresponding component with optional query parameters, and returns the rendered output (HTML, text, or structured data) as the resource content. Supports dynamic resource generation based on client context.","intents":["Expose dynamic UI components as MCP resources that Claude can request and display","Create parameterized resources where rendering depends on query parameters or client context","Serve component-based documentation or interactive content through the MCP resource protocol"],"best_for":["building interactive dashboards or forms that Claude can render and interact with","exposing dynamic content (reports, lists, forms) as MCP resources","teams wanting to keep resource definitions and rendering logic co-located in components"],"limitations":["Resource output is static once rendered; real-time updates require client polling or WebSocket extensions","No built-in caching of rendered resources; each request re-renders the component","Client-side interactivity is limited to MCP's request-response model; complex UIs may require custom client implementations"],"requires":["Preact component that accepts resource parameters as props","MCP server with resource handler registration","Client that supports MCP resource protocol (Claude, custom MCP client)"],"input_types":["Preact component definitions","resource request objects with optional parameters"],"output_types":["rendered HTML","plain text","JSON-serialized component output"],"categories":["tool-use-integration","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_3","uri":"capability://tool.use.integration.request.response.message.handling.with.component.lifecycle.integration","name":"request-response message handling with component lifecycle integration","description":"Implements MCP's message protocol (requests, responses, notifications) with hooks into Preact component lifecycle. Server receives MCP requests, routes them to appropriate component handlers, executes component render cycles, and sends responses back to clients. Supports both synchronous component rendering and async operations (API calls, database queries) within component lifecycle hooks, with proper error handling and timeout management.","intents":["Handle incoming MCP requests and route them to the correct Preact component handler","Execute async operations (API calls, database queries) during component rendering without blocking the server","Manage component lifecycle (initialization, rendering, cleanup) in response to client requests"],"best_for":["developers building MCP servers that need to coordinate component rendering with async operations","teams integrating external APIs or databases into Preact-based MCP tools","scenarios requiring proper error handling and timeout management for tool execution"],"limitations":["Async operations in component lifecycle add latency; no built-in request queuing or prioritization","Error handling is synchronous; async errors in component lifecycle may not propagate correctly to MCP clients","No built-in support for canceling long-running operations; timeouts must be implemented manually"],"requires":["MCP server instance with message handler registration","Preact components with lifecycle hooks (useEffect, useCallback, etc.)","proper async/await patterns in component code"],"input_types":["MCP request objects (tool calls, resource queries, notifications)","component lifecycle events"],"output_types":["MCP response objects","error objects with diagnostic information"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_4","uri":"capability://code.generation.editing.type.safe.tool.parameter.binding.with.typescript.support","name":"type-safe tool parameter binding with typescript support","description":"Provides TypeScript-first tool parameter binding by leveraging Preact component prop types to define and validate tool parameters. The server uses TypeScript's type system to auto-generate parameter schemas, validate incoming tool calls against those types, and provide IDE autocomplete for tool parameters. Type mismatches are caught at development time and runtime, with clear error messages for parameter validation failures.","intents":["Define tool parameters using TypeScript types instead of JSON schema","Get IDE autocomplete and type checking for tool parameters during development","Automatically validate incoming tool calls against TypeScript type definitions"],"best_for":["TypeScript-first teams building MCP servers","developers who prefer type safety over schema flexibility","projects where IDE support and compile-time checking are priorities"],"limitations":["Requires TypeScript; no first-class support for JavaScript-only projects","Complex types (unions, generics) may not map cleanly to JSON schema; custom type handlers may be needed","Type generation from Preact props requires build-time tooling; adds complexity to the build pipeline"],"requires":["TypeScript 4.5+","Preact components with typed props","type-to-schema generation tool (e.g., ts-json-schema-generator)"],"input_types":["TypeScript type definitions","Preact component prop interfaces"],"output_types":["JSON schema objects","validated parameter objects","type error messages"],"categories":["code-generation-editing","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_5","uri":"capability://memory.knowledge.server.side.state.management.with.preact.hooks","name":"server-side state management with preact hooks","description":"Enables state management within MCP server tools using Preact hooks (useState, useReducer, useContext). State is scoped to individual tool invocations or shared across multiple tools via context providers. The server manages hook state lifecycle, ensuring proper cleanup between tool calls and supporting stateful tool interactions across multiple client requests. Integrates with MCP's request-response model to persist state across related tool calls.","intents":["Maintain state within a tool across multiple client requests without external storage","Share state between multiple tools using Preact context providers","Implement stateful workflows where tool behavior depends on previous invocations"],"best_for":["building interactive, multi-step workflows within MCP tools","prototyping stateful tools without setting up external state stores","teams familiar with Preact hooks who want to apply those patterns to server-side code"],"limitations":["State is ephemeral and lost when the server restarts; no built-in persistence","State is not shared across multiple server instances; unsuitable for distributed deployments","Hook state is tied to component instances; complex state sharing patterns may require custom context setup"],"requires":["Preact hooks (useState, useReducer, useContext, etc.)","MCP server instance with hook support","understanding of Preact hook lifecycle and rules"],"input_types":["component state updates","context provider values"],"output_types":["updated component state","context-derived values"],"categories":["memory-knowledge","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_6","uri":"capability://automation.workflow.composable.tool.chains.with.component.composition","name":"composable tool chains with component composition","description":"Supports composing multiple Preact components into tool chains where the output of one tool (component) becomes the input to the next. The server manages data flow between composed components, handles error propagation through the chain, and provides a unified interface for executing multi-step tool sequences. Component composition follows Preact's component nesting patterns, making tool chains declarative and reusable.","intents":["Chain multiple tools together where output from one tool feeds into the next","Create reusable tool pipelines that can be invoked as a single MCP tool","Compose complex workflows from simpler, single-purpose tools"],"best_for":["building multi-step workflows that combine multiple tools","teams wanting to compose tools declaratively using component patterns","scenarios where tool output naturally feeds into the next tool's input"],"limitations":["Tool chain execution is sequential; no built-in parallelization of independent tools","Error in one tool stops the entire chain; no built-in retry or fallback mechanisms","Data transformation between tools must be handled explicitly; no automatic type coercion"],"requires":["multiple Preact components representing individual tools","data flow mechanism to pass output from one component to the next","error handling strategy for chain execution"],"input_types":["Preact component definitions","initial input data for the tool chain"],"output_types":["final output from the last tool in the chain","error objects if any tool fails"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-modelcontextprotocolserver-basic-preact__cap_7","uri":"capability://automation.workflow.client.context.and.session.management.for.multi.client.scenarios","name":"client context and session management for multi-client scenarios","description":"Manages separate execution contexts and sessions for multiple concurrent MCP clients connecting to the same server. Each client gets an isolated context with its own state, resource namespace, and tool invocation history. The server routes requests to the correct client context, maintains session metadata (client ID, connection time, request count), and handles client disconnection with proper cleanup. Supports session persistence for reconnecting clients.","intents":["Handle multiple Claude instances or MCP clients connecting to the same server simultaneously","Maintain separate state and context for each client without cross-contamination","Track client sessions and provide per-client resource isolation"],"best_for":["multi-tenant MCP servers serving multiple clients","scenarios where different clients need isolated tool state and resources","teams building collaborative tools where client context matters"],"limitations":["Session management adds memory overhead; no built-in session cleanup for long-lived servers","Session persistence requires external storage; in-memory sessions are lost on server restart","No built-in support for session migration across server instances in distributed deployments"],"requires":["MCP server with client identification mechanism","session storage (in-memory or external)","client context isolation strategy"],"input_types":["client identifiers","session metadata"],"output_types":["isolated execution contexts","per-client resource namespaces"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":25,"verified":false,"data_access_risk":"high","permissions":["Node.js 16+","@modelcontextprotocol/sdk package","Preact 10.x or higher","TypeScript 4.5+ (if using TypeScript)","Preact component with typed props (TypeScript recommended)","MCP server instance with tool registration handler","Component props must be JSON-serializable","Preact component that accepts resource parameters as props","MCP server with resource handler registration","Client that supports MCP resource protocol (Claude, custom MCP client)"],"failure_modes":["No built-in state persistence — component state is ephemeral unless explicitly managed","Limited to Preact's rendering model; complex server-side rendering patterns may require custom middleware","No automatic hot-reloading during development; requires manual server restart for component changes","Schema generation from component props may not capture complex validation rules; custom schema overrides may be needed","Rendering-based tool execution adds latency compared to direct function calls (~50-100ms per tool invocation)","No built-in support for streaming tool results; each tool invocation must complete before returning","Resource output is static once rendered; real-time updates require client polling or WebSocket extensions","No built-in caching of rendered resources; each request re-renders the component","Client-side interactivity is limited to MCP's request-response model; complex UIs may require custom client implementations","Async operations in component lifecycle add latency; no built-in request queuing or prioritization","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.26,"ecosystem":0.3,"match_graph":0.25,"freshness":0.6,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.15,"match_graph":0.23,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-05-24T12:16:23.904Z","last_scraped_at":"2026-05-03T14:23:44.448Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=npm-modelcontextprotocolserver-basic-preact","compare_url":"https://unfragile.ai/compare?artifact=npm-modelcontextprotocolserver-basic-preact"}},"signature":"vgFj6QOQtxTfXhXHBDSB4eFe9M57owC+AGOGCR+GmfeCc8ewPFc2NbJEhoofyAkOGZJU5MCHGrqFa5OAV40EBw==","signedAt":"2026-06-21T05:56:29.828Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/npm-modelcontextprotocolserver-basic-preact","artifact":"https://unfragile.ai/npm-modelcontextprotocolserver-basic-preact","verify":"https://unfragile.ai/api/v1/verify?slug=npm-modelcontextprotocolserver-basic-preact","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}