{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"hn-46129111","slug":"cupertino-mcp-server-giving-claude-offline-apple-d","name":"Cupertino – MCP server giving Claude offline Apple documentation","type":"mcp","url":"https://aleahim.com/blog/cupertino-ecosystem/","page_url":"https://unfragile.ai/cupertino-mcp-server-giving-claude-offline-apple-d","categories":["mcp-servers"],"tags":["hackernews","show-hn"],"pricing":{"model":"unknown","free":false,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"hn-46129111__cap_0","uri":"capability://tool.use.integration.offline.apple.documentation.retrieval.via.mcp.protocol","name":"offline apple documentation retrieval via mcp protocol","description":"Implements a Model Context Protocol (MCP) server that exposes locally-cached Apple documentation as a queryable resource, allowing Claude to access iOS, macOS, watchOS, and tvOS API references without network calls. The server indexes Apple's official documentation (likely from developer.apple.com archives or local copies) and responds to Claude's tool-use requests with relevant documentation snippets, enabling context-aware code suggestions grounded in official Apple APIs.","intents":["I want Claude to suggest Swift/Objective-C code that references actual Apple APIs without hallucinating undocumented methods","I need offline access to Apple documentation while developing without internet connectivity","I want to reduce latency when Claude looks up Apple framework details during code generation","I need Claude to stay current with Apple's official API signatures and deprecation notices"],"best_for":["iOS/macOS developers using Claude for pair programming","teams building Apple ecosystem apps who want grounded code suggestions","developers in low-connectivity environments (airplanes, remote offices)"],"limitations":["Documentation freshness depends on when the local cache was last updated — no automatic sync with Apple's latest releases","Requires pre-downloaded Apple documentation bundle, adding setup complexity and disk space overhead","Limited to documentation scope available in the cached dataset — may not cover beta APIs or very recent releases","MCP protocol overhead adds latency compared to direct API calls, though still faster than network round-trips"],"requires":["Claude desktop app or Claude API client with MCP support","Local Apple documentation dataset (size unknown, likely 500MB–2GB)","MCP server runtime environment (Python or Node.js, version unspecified)","Network connectivity to initially download/configure the MCP server (not for runtime)"],"input_types":["natural language queries from Claude (e.g., 'How do I implement URLSession delegate methods?')","code context from Claude's conversation history"],"output_types":["structured documentation excerpts (API signatures, method descriptions, code examples)","markdown-formatted reference material","deprecation warnings and migration guides"],"categories":["tool-use-integration","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"hn-46129111__cap_1","uri":"capability://search.retrieval.mcp.based.documentation.indexing.and.semantic.search","name":"mcp-based documentation indexing and semantic search","description":"Implements a search/retrieval layer within the MCP server that indexes Apple documentation (likely using full-text search, keyword matching, or embeddings) and responds to Claude's queries by ranking and returning the most relevant documentation sections. The server likely maintains an inverted index or vector embeddings of documentation content, allowing Claude to ask natural-language questions and receive contextually appropriate API references without requiring exact keyword matching.","intents":["I want to ask Claude 'How do I handle network errors in URLSession?' and get the exact Apple documentation section","I need Claude to find deprecated APIs and suggest modern replacements from official Apple docs","I want semantic search across Apple frameworks (e.g., 'animation libraries' returns both Core Animation and SwiftUI animation APIs)"],"best_for":["developers who prefer natural-language queries over browsing Apple's documentation site","teams using Claude as a primary development assistant who need grounded API lookups"],"limitations":["Search quality depends on indexing strategy — keyword-based search may miss semantic relationships between APIs","No ranking by relevance or popularity — may return obscure or deprecated APIs first if keyword match is strong","Search scope limited to pre-indexed documentation; cannot search code examples or community resources","Embedding-based search (if used) requires vector storage and similarity computation, adding memory overhead"],"requires":["Pre-built search index (full-text, keyword, or vector embeddings)","MCP server with search/retrieval endpoint implementation","Claude client capable of invoking tool calls with query parameters"],"input_types":["natural language search queries from Claude","optional filters (framework name, API category, iOS version)"],"output_types":["ranked list of documentation sections","API signatures with parameter descriptions","code examples from official Apple docs"],"categories":["search-retrieval","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"hn-46129111__cap_2","uri":"capability://code.generation.editing.context.aware.code.suggestion.grounding.in.apple.apis","name":"context-aware code suggestion grounding in apple apis","description":"Leverages the offline documentation resource to ground Claude's code generation in verified Apple APIs, preventing hallucination of non-existent methods or parameters. When Claude generates Swift/Objective-C code, it can reference the MCP server to validate API signatures, check parameter types, and include accurate method calls. The server acts as a verification layer that Claude can query mid-generation to ensure suggested code is syntactically and semantically correct according to Apple's official specifications.","intents":["I want Claude to generate Swift code that I can trust won't call non-existent methods or use wrong parameter types","I need Claude to include correct parameter names and types when suggesting URLSession, Core Data, or SwiftUI APIs","I want Claude to warn me if a suggested API is deprecated and offer the modern replacement"],"best_for":["junior developers learning Apple frameworks who need reliable code examples","teams with strict code quality standards requiring grounded API usage","developers building production iOS/macOS apps who can't afford API hallucinations"],"limitations":["Grounding only works if Claude explicitly queries the MCP server during generation — no automatic validation","Cannot verify logic correctness, only API signature correctness — a syntactically valid call may still be semantically wrong","Requires Claude to be configured to use the MCP tool; not automatic for all code generation","Grounding latency adds ~100–500ms per API lookup, potentially slowing interactive code generation"],"requires":["Claude configured with MCP server integration","Developer explicitly prompting Claude to verify APIs (e.g., 'Generate Swift code and check the docs')","MCP server with fast lookup performance (sub-100ms for typical queries)"],"input_types":["Claude's code generation context and conversation history","API names and method signatures to validate"],"output_types":["verified API signatures with correct parameter types","deprecation notices and modern API alternatives","code snippets with accurate method calls"],"categories":["code-generation-editing","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"hn-46129111__cap_3","uri":"capability://memory.knowledge.multi.framework.documentation.aggregation.and.cross.linking","name":"multi-framework documentation aggregation and cross-linking","description":"Aggregates documentation across Apple's entire ecosystem (iOS, macOS, watchOS, tvOS, visionOS) and maintains cross-references between related frameworks (e.g., linking URLSession to Network framework, SwiftUI to Combine). The MCP server indexes these relationships, allowing Claude to discover related APIs and understand framework dependencies. When Claude asks about networking, the server can surface both URLSession and Network framework options with clear guidance on when to use each.","intents":["I want Claude to suggest the right networking framework (URLSession vs Network vs NWConnection) based on my use case","I need to understand how SwiftUI integrates with Combine, Core Data, and async/await","I want Claude to show me all animation options across Core Animation, SwiftUI, and UIView"],"best_for":["developers new to Apple ecosystem who need guidance on framework selection","architects designing multi-framework solutions who need to understand integration points","teams migrating from UIKit to SwiftUI who need to understand framework relationships"],"limitations":["Cross-linking quality depends on manual curation — relationships may be incomplete or outdated","No automatic detection of framework compatibility or version conflicts","Cannot provide real-time guidance on which framework is 'best' — only documents official relationships","Documentation for newer frameworks (visionOS, SwiftData) may be sparse or incomplete"],"requires":["Comprehensive Apple documentation covering all major frameworks","Pre-built cross-reference index linking related APIs and frameworks","MCP server with multi-framework query support"],"input_types":["framework or API names from Claude","use-case descriptions (e.g., 'I need real-time network monitoring')"],"output_types":["list of related frameworks with comparison tables","integration guides showing how frameworks work together","decision trees for framework selection"],"categories":["memory-knowledge","search-retrieval"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"hn-46129111__cap_4","uri":"capability://tool.use.integration.offline.first.mcp.server.deployment.and.lifecycle.management","name":"offline-first mcp server deployment and lifecycle management","description":"Provides a self-contained MCP server that runs locally without external dependencies, managing its own documentation cache, search index, and lifecycle. The server likely includes setup scripts, documentation download utilities, and configuration management to allow developers to deploy and maintain the server independently. It handles MCP protocol handshakes, request routing, and response formatting without requiring cloud infrastructure or external APIs.","intents":["I want to set up a local MCP server that gives Claude offline Apple docs without any cloud dependencies","I need to update the documentation cache when Apple releases new APIs","I want to deploy this MCP server to my team's development machines with minimal configuration"],"best_for":["teams with strict offline-first or air-gapped requirements","developers who want to avoid cloud dependencies and data transmission","organizations managing multiple developer machines who need centralized documentation"],"limitations":["Documentation updates require manual intervention or custom automation — no automatic sync with Apple's releases","Server maintenance burden falls on the team — no managed service or automatic updates","Deployment complexity varies by platform (macOS, Linux, Windows) — may require platform-specific setup","No built-in monitoring, logging, or alerting — requires external tools for production observability"],"requires":["Local machine or server with sufficient disk space for documentation cache","MCP server runtime (Python 3.8+, Node.js 16+, or similar)","Claude desktop app or API client with MCP support","Network connectivity for initial setup and documentation downloads (not for runtime)"],"input_types":["configuration files (server settings, documentation paths)","documentation source files or download URLs"],"output_types":["running MCP server process","server logs and status information","MCP protocol responses to Claude"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":30,"verified":false,"data_access_risk":"high","permissions":["Claude desktop app or Claude API client with MCP support","Local Apple documentation dataset (size unknown, likely 500MB–2GB)","MCP server runtime environment (Python or Node.js, version unspecified)","Network connectivity to initially download/configure the MCP server (not for runtime)","Pre-built search index (full-text, keyword, or vector embeddings)","MCP server with search/retrieval endpoint implementation","Claude client capable of invoking tool calls with query parameters","Claude configured with MCP server integration","Developer explicitly prompting Claude to verify APIs (e.g., 'Generate Swift code and check the docs')","MCP server with fast lookup performance (sub-100ms for typical queries)"],"failure_modes":["Documentation freshness depends on when the local cache was last updated — no automatic sync with Apple's latest releases","Requires pre-downloaded Apple documentation bundle, adding setup complexity and disk space overhead","Limited to documentation scope available in the cached dataset — may not cover beta APIs or very recent releases","MCP protocol overhead adds latency compared to direct API calls, though still faster than network round-trips","Search quality depends on indexing strategy — keyword-based search may miss semantic relationships between APIs","No ranking by relevance or popularity — may return obscure or deprecated APIs first if keyword match is strong","Search scope limited to pre-indexed documentation; cannot search code examples or community resources","Embedding-based search (if used) requires vector storage and similarity computation, adding memory overhead","Grounding only works if Claude explicitly queries the MCP server during generation — no automatic validation","Cannot verify logic correctness, only API signature correctness — a syntactically valid call may still be semantically wrong","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.28,"quality":0.2,"ecosystem":0.21000000000000002,"match_graph":0.25,"freshness":0.75,"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":"2026-05-24T12:16:23.326Z","last_scraped_at":"2026-05-04T08:10:01.171Z","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=cupertino-mcp-server-giving-claude-offline-apple-d","compare_url":"https://unfragile.ai/compare?artifact=cupertino-mcp-server-giving-claude-offline-apple-d"}},"signature":"K1ISTscgzYlb6AR2rm/Vcs7cK5exav5MofDYIbZTyYXiILCVZHVSbi0r+BiaUaCXpEiaMuDSCzJ4J78bubgtDA==","signedAt":"2026-06-21T09:30:20.085Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/cupertino-mcp-server-giving-claude-offline-apple-d","artifact":"https://unfragile.ai/cupertino-mcp-server-giving-claude-offline-apple-d","verify":"https://unfragile.ai/api/v1/verify?slug=cupertino-mcp-server-giving-claude-offline-apple-d","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"}}