{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"npm_npm-pikkumodelcontextprotocol","slug":"npm-pikkumodelcontextprotocol","name":"@pikku/modelcontextprotocol","type":"mcp","url":"https://www.npmjs.com/package/@pikku/modelcontextprotocol","page_url":"https://unfragile.ai/npm-pikkumodelcontextprotocol","categories":["mcp-servers"],"tags":[],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"npm_npm-pikkumodelcontextprotocol__cap_0","uri":"capability://tool.use.integration.mcp.server.runtime.initialization.and.lifecycle.management","name":"mcp server runtime initialization and lifecycle management","description":"Provides a Node.js runtime environment for spinning up Model Context Protocol servers using the official MCP SDK. Handles server instantiation, connection negotiation, and graceful shutdown through a standardized initialization pattern that abstracts away low-level MCP protocol details. The runtime manages the server's lifecycle from startup through message routing to connected clients.","intents":["I need to quickly stand up an MCP server without implementing the protocol from scratch","I want to expose my tools and resources to Claude or other MCP-compatible clients","I need a production-ready server runtime that handles connection management and error recovery"],"best_for":["Node.js developers building MCP integrations","Teams deploying custom tool servers for Claude Desktop or other MCP clients","Developers migrating from REST APIs to the MCP protocol"],"limitations":["Node.js/JavaScript only — no native Python or Go support","Requires understanding of MCP protocol concepts (resources, tools, prompts)","No built-in clustering or horizontal scaling — single-process runtime","Limited observability — relies on standard Node.js logging without structured tracing built-in"],"requires":["Node.js 16.0.0 or higher","Official MCP SDK (@modelcontextprotocol/sdk) as peer dependency","Basic understanding of async/await and Node.js event emitters"],"input_types":["MCP protocol messages (JSON-RPC 2.0 format)","Tool/resource definitions (JSON schema)","Configuration objects"],"output_types":["MCP protocol responses (JSON-RPC 2.0)","Tool execution results","Resource content streams"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-pikkumodelcontextprotocol__cap_1","uri":"capability://tool.use.integration.tool.definition.and.registration.with.schema.validation","name":"tool definition and registration with schema validation","description":"Enables developers to define tools (callable functions exposed to MCP clients) using JSON Schema for input validation and type safety. The runtime validates tool definitions against the MCP specification and registers them in a central tool registry that clients can discover via the MCP tools/list endpoint. Supports complex nested schemas, optional parameters, and description metadata for client-side UI rendering.","intents":["I want to expose a function as a callable tool that Claude can invoke","I need to ensure tools have proper input validation and type constraints","I want clients to discover and understand my tools' capabilities without documentation"],"best_for":["Developers building agent-accessible tool servers","Teams standardizing tool interfaces across multiple MCP servers","Builders creating Claude plugins or integrations"],"limitations":["Schema validation is JSON Schema only — no custom validation logic hooks","Tool definitions are static at server startup — no dynamic tool registration at runtime","No built-in rate limiting or quota management per tool","Complex nested schemas may impact discovery performance on clients with limited resources"],"requires":["Node.js 16.0.0+","Valid JSON Schema draft 7 or later for tool input definitions","MCP SDK version compatible with current Pikku package"],"input_types":["JSON Schema objects","Tool handler functions (async/sync)","Metadata objects (name, description, tags)"],"output_types":["Registered tool definitions in MCP format","Tool execution results (any JSON-serializable type)","Validation error messages"],"categories":["tool-use-integration","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-pikkumodelcontextprotocol__cap_2","uri":"capability://memory.knowledge.resource.exposure.and.content.streaming","name":"resource exposure and content streaming","description":"Allows servers to expose resources (files, documents, data) to MCP clients through a resource registry with URI-based addressing. Supports streaming large resources via chunked responses and lazy-loading content, preventing memory bloat when exposing large datasets. Resources are discoverable via the MCP resources/list endpoint and can be fetched with optional filtering and pagination parameters.","intents":["I want to expose files or documents from my system to Claude for analysis","I need to stream large datasets to clients without loading everything into memory","I want clients to discover available resources and their metadata before fetching"],"best_for":["Developers building knowledge base or document servers","Teams exposing file systems or databases to MCP clients","Builders creating RAG-adjacent systems where Claude needs access to external content"],"limitations":["No built-in access control — all registered resources are discoverable by any connected client","Streaming is unidirectional — clients cannot push updates back through the resource API","Resource URIs must be manually managed — no automatic path generation from file systems","No built-in caching — each fetch request re-reads the resource from source"],"requires":["Node.js 16.0.0+","Resource content must be readable as streams or strings","MCP SDK version with resources/list and resources/read support"],"input_types":["Resource URI strings","Resource metadata objects (name, description, MIME type)","Content sources (file paths, URLs, database queries, in-memory data)"],"output_types":["Resource content (text, binary, streamed chunks)","Resource metadata and listings","MIME type declarations"],"categories":["memory-knowledge","search-retrieval"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-pikkumodelcontextprotocol__cap_3","uri":"capability://text.generation.language.prompt.template.definition.and.client.side.rendering","name":"prompt template definition and client-side rendering","description":"Enables servers to define reusable prompt templates that MCP clients can discover and instantiate with dynamic arguments. Templates support variable substitution, conditional sections, and metadata for client-side UI hints (e.g., input field types). The runtime manages template registration and provides clients with the prompts/list and prompts/get endpoints for discovery and instantiation.","intents":["I want to provide Claude with pre-built prompts that guide specific workflows","I need to expose parameterized prompt templates that clients can customize at runtime","I want to standardize prompt patterns across multiple integrations"],"best_for":["Teams building Claude integrations with domain-specific workflows","Developers creating prompt libraries for specific use cases","Builders standardizing agent behavior across multiple deployments"],"limitations":["Prompt templates are static — no dynamic template generation based on runtime state","Variable substitution is simple string replacement — no complex templating logic (loops, conditionals in templates)","No built-in versioning — template updates require server restart","Client-side rendering hints are metadata only — actual UI rendering is client-specific"],"requires":["Node.js 16.0.0+","MCP SDK version with prompts/list and prompts/get support","Template definitions as JSON objects with variable placeholders"],"input_types":["Prompt template definitions (text with variable placeholders)","Template metadata (name, description, argument schemas)","Variable values for instantiation"],"output_types":["Rendered prompt text with substituted variables","Template metadata and listings","Argument validation errors"],"categories":["text-generation-language","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-pikkumodelcontextprotocol__cap_4","uri":"capability://tool.use.integration.request.response.message.routing.and.error.handling","name":"request/response message routing and error handling","description":"Implements the MCP JSON-RPC 2.0 message protocol with automatic request routing to registered handlers, response serialization, and error handling. Routes incoming messages to appropriate tool handlers, resource readers, or prompt resolvers based on method names; catches exceptions and converts them to MCP-compliant error responses with proper error codes and messages. Handles both request-response and notification patterns.","intents":["I need my server to correctly handle MCP protocol messages without manual JSON-RPC parsing","I want errors from my tools to be properly formatted as MCP error responses","I need to support both synchronous and asynchronous tool execution"],"best_for":["Developers building MCP servers with multiple tools/resources","Teams needing robust error handling and protocol compliance","Builders integrating with Claude Desktop or other strict MCP clients"],"limitations":["Error handling is automatic but limited — custom error codes require manual response crafting","No built-in request deduplication — duplicate messages are processed twice","Message ordering is not guaranteed across async handlers — clients must handle out-of-order responses","No request timeout enforcement — long-running handlers can block the event loop"],"requires":["Node.js 16.0.0+","MCP SDK version with message routing support","Handlers must return JSON-serializable results"],"input_types":["JSON-RPC 2.0 request objects","MCP method names (tools/call, resources/read, prompts/get, etc.)","Handler function results (promises or sync values)"],"output_types":["JSON-RPC 2.0 response objects","MCP error responses with error codes","Notification messages (no response expected)"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-pikkumodelcontextprotocol__cap_5","uri":"capability://tool.use.integration.client.connection.management.and.protocol.negotiation","name":"client connection management and protocol negotiation","description":"Manages incoming client connections, performs MCP protocol version negotiation, and maintains connection state throughout the server's lifetime. Handles the initialization handshake where clients declare their capabilities and the server responds with its supported features. Manages connection cleanup and graceful disconnection, including resource teardown for long-lived connections.","intents":["I want my server to properly negotiate MCP protocol versions with different client versions","I need to track which clients are connected and what capabilities they support","I want to clean up resources when clients disconnect"],"best_for":["Developers building production MCP servers with multiple concurrent clients","Teams needing version compatibility across different MCP client implementations","Builders managing stateful connections (e.g., database sessions per client)"],"limitations":["No built-in authentication or authorization — all connected clients have equal access","Connection state is in-memory only — no persistence across server restarts","No automatic reconnection handling — clients must implement their own retry logic","Limited visibility into connection health — no heartbeat or keep-alive mechanism built-in"],"requires":["Node.js 16.0.0+","MCP SDK version with initialization protocol support","Transport layer (stdio, HTTP, WebSocket) provided by client or separate middleware"],"input_types":["MCP initialization messages","Client capability declarations","Protocol version strings"],"output_types":["Server capability declarations","Protocol version agreement","Connection acknowledgment messages"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-pikkumodelcontextprotocol__cap_6","uri":"capability://planning.reasoning.sampling.and.model.interaction.capabilities.exposure","name":"sampling and model interaction capabilities exposure","description":"Exposes the server's ability to request sampling (LLM inference) from connected clients through the sampling/create endpoint. Allows servers to invoke language models on the client side (e.g., Claude running in Claude Desktop) with specified prompts, model parameters, and system instructions. Responses are streamed back to the server, enabling agentic patterns where servers can reason about tool results and decide next steps.","intents":["I want my tool server to invoke Claude to reason about tool results and plan next steps","I need to run LLM inference on the client side without exposing API keys to my server","I want to implement agentic loops where my server and Claude collaborate"],"best_for":["Developers building agentic MCP servers that need reasoning capabilities","Teams implementing multi-turn workflows where servers need to invoke LLMs","Builders creating Claude integrations that require server-side reasoning"],"limitations":["Sampling is only available if the client supports it — not all MCP clients implement sampling","No model selection — the client chooses which model to use, not the server","Streaming responses add latency — batch sampling requests are not supported","No cost tracking or usage limits — servers can make unlimited sampling requests"],"requires":["Node.js 16.0.0+","MCP SDK version with sampling/create support","Client that implements the sampling capability (e.g., Claude Desktop)"],"input_types":["Prompt text","System instructions","Model parameters (temperature, max_tokens, stop_sequences)","Tool definitions for the client to use"],"output_types":["Model-generated text responses","Tool use requests from the model","Stop reason indicators"],"categories":["planning-reasoning","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":25,"verified":false,"data_access_risk":"high","permissions":["Node.js 16.0.0 or higher","Official MCP SDK (@modelcontextprotocol/sdk) as peer dependency","Basic understanding of async/await and Node.js event emitters","Node.js 16.0.0+","Valid JSON Schema draft 7 or later for tool input definitions","MCP SDK version compatible with current Pikku package","Resource content must be readable as streams or strings","MCP SDK version with resources/list and resources/read support","MCP SDK version with prompts/list and prompts/get support","Template definitions as JSON objects with variable placeholders"],"failure_modes":["Node.js/JavaScript only — no native Python or Go support","Requires understanding of MCP protocol concepts (resources, tools, prompts)","No built-in clustering or horizontal scaling — single-process runtime","Limited observability — relies on standard Node.js logging without structured tracing built-in","Schema validation is JSON Schema only — no custom validation logic hooks","Tool definitions are static at server startup — no dynamic tool registration at runtime","No built-in rate limiting or quota management per tool","Complex nested schemas may impact discovery performance on clients with limited resources","No built-in access control — all registered resources are discoverable by any connected client","Streaming is unidirectional — clients cannot push updates back through the resource API","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.24,"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":"2026-05-03T14:23:45.703Z","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-pikkumodelcontextprotocol","compare_url":"https://unfragile.ai/compare?artifact=npm-pikkumodelcontextprotocol"}},"signature":"wZPt88qclmBNU+Hw42U0rwmocNwAvFfXHheM96KKOXG6p7dzHIFuaKygMJKx//BpaHbLhdUVScs5P/fndPACBA==","signedAt":"2026-06-20T03:40:25.239Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/npm-pikkumodelcontextprotocol","artifact":"https://unfragile.ai/npm-pikkumodelcontextprotocol","verify":"https://unfragile.ai/api/v1/verify?slug=npm-pikkumodelcontextprotocol","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"}}