{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"npm_npm-rekogmcp-nest","slug":"npm-rekogmcp-nest","name":"@rekog/mcp-nest","type":"mcp","url":"https://www.npmjs.com/package/@rekog/mcp-nest","page_url":"https://unfragile.ai/npm-rekogmcp-nest","categories":["mcp-servers"],"tags":[],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"npm_npm-rekogmcp-nest__cap_0","uri":"capability://tool.use.integration.nestjs.integrated.mcp.server.bootstrapping","name":"nestjs-integrated mcp server bootstrapping","description":"Provides a NestJS module decorator and provider system that integrates the Model Context Protocol server lifecycle into NestJS's dependency injection container, enabling declarative MCP server setup through standard NestJS module imports and configuration. Uses NestJS's OnModuleInit and OnModuleDestroy lifecycle hooks to manage MCP server initialization, resource binding, and graceful shutdown within the existing NestJS application context.","intents":["I want to add MCP server capabilities to my existing NestJS application without rewriting my architecture","I need MCP server lifecycle management (startup, shutdown, error handling) to integrate seamlessly with NestJS's dependency injection","I want to reuse my NestJS modules, services, and middleware for MCP server operations"],"best_for":["NestJS backend developers building AI-powered applications with MCP protocol support","teams with existing NestJS codebases wanting to add Claude/LLM integration via MCP","enterprise applications requiring MCP servers with NestJS's structured module system"],"limitations":["Tightly coupled to NestJS ecosystem — cannot be used in non-NestJS Node.js applications","Requires understanding of NestJS module architecture and dependency injection patterns","MCP server runs in same process as NestJS app — no built-in process isolation or clustering support"],"requires":["NestJS 9.0 or higher","Node.js 16.0 or higher","@nestjs/common package installed","MCP SDK (@modelcontextprotocol/sdk or compatible)"],"input_types":["NestJS module configuration objects","TypeScript decorator metadata","MCP server configuration"],"output_types":["initialized MCP server instance","bound NestJS services and providers","MCP protocol message handlers"],"categories":["tool-use-integration","framework-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_1","uri":"capability://code.generation.editing.declarative.mcp.resource.registration.via.nestjs.decorators","name":"declarative mcp resource registration via nestjs decorators","description":"Provides TypeScript decorators (@MCP, @MCPResource, @MCPTool, @MCPPrompt) that allow developers to annotate NestJS service methods as MCP resources, tools, or prompts. The decorator system introspects method signatures, parameter types, and JSDoc comments to automatically generate MCP resource schemas and register them with the MCP server without manual schema definition.","intents":["I want to expose my NestJS service methods as MCP tools without writing separate MCP schema definitions","I need automatic schema generation from TypeScript types and JSDoc comments for MCP resources","I want to keep my business logic in NestJS services and automatically make them available to Claude via MCP"],"best_for":["TypeScript developers who want to minimize boilerplate between service logic and MCP exposure","teams building multi-tool MCP servers where many NestJS services need MCP bindings","rapid prototyping scenarios where schema-first development slows iteration"],"limitations":["Decorator-based approach requires TypeScript with experimentalDecorators enabled in tsconfig.json","Schema generation from types may not handle complex union types, generics, or recursive types perfectly — may require manual schema overrides","JSDoc comment parsing is regex-based and may fail on non-standard formatting or complex type descriptions","No built-in validation of generated schemas against MCP spec — invalid schemas only caught at runtime"],"requires":["TypeScript 4.5 or higher","experimentalDecorators: true in tsconfig.json","reflect-metadata package installed and imported","@nestjs/common for @Injectable() and other decorators"],"input_types":["TypeScript method signatures","JSDoc comments","NestJS service class definitions"],"output_types":["MCP resource schema objects","registered tool/resource handlers","JSON Schema definitions"],"categories":["code-generation-editing","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_10","uri":"capability://safety.moderation.mcp.error.handling.and.exception.mapping.to.protocol.format","name":"mcp error handling and exception mapping to protocol format","description":"Provides exception filters that catch NestJS exceptions and service errors, mapping them to MCP-compliant error responses with appropriate error codes and messages. Handles both expected errors (validation failures, resource not found) and unexpected errors (database failures, timeouts) with configurable error detail levels, ensuring Claude receives actionable error information without exposing sensitive implementation details.","intents":["I want errors from my NestJS services to be automatically converted to MCP error format that Claude can understand","I need to hide sensitive error details (stack traces, database errors) from Claude while logging them internally","I want different error handling behavior for different error types (validation errors vs system errors)"],"best_for":["production MCP servers where error handling and information disclosure must be carefully controlled","applications with strict security requirements where error details must not leak to clients","teams wanting consistent error handling across REST and MCP endpoints"],"limitations":["Exception filters are synchronous — cannot perform async error recovery or fallback logic","Error mapping is manual — requires explicit exception filter implementation for each error type","MCP error format is limited compared to HTTP status codes — some error nuances may be lost in translation","Error context (request ID, user ID) must be explicitly included in error responses — not automatic"],"requires":["NestJS 9.0+","@nestjs/common for ExceptionFilter interface","custom exception filter implementation","MCP error response format specification"],"input_types":["NestJS exceptions and errors","service method exceptions"],"output_types":["MCP error response objects","error codes and messages in MCP format"],"categories":["safety-moderation","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_11","uri":"capability://text.generation.language.mcp.resource.documentation.generation.from.typescript.metadata","name":"mcp resource documentation generation from typescript metadata","description":"Automatically generates human-readable documentation for MCP resources, tools, and prompts from TypeScript method signatures, JSDoc comments, and parameter decorators. Produces documentation in multiple formats (Markdown, HTML, JSON) suitable for Claude's context window or external documentation sites, keeping documentation synchronized with code without manual updates.","intents":["I want to generate documentation for my MCP tools that Claude can reference to understand what each tool does","I need to keep MCP documentation in sync with code changes without manual updates","I want to export MCP resource documentation in a format suitable for external documentation sites or wikis"],"best_for":["teams with many MCP resources where manual documentation maintenance is impractical","projects where documentation must stay synchronized with code","scenarios requiring documentation in multiple formats (Markdown for GitHub, HTML for web, JSON for Claude context)"],"limitations":["Documentation quality depends on JSDoc comment quality — sparse or missing comments result in poor documentation","Complex types or generic parameters may not be documented clearly — requires manual documentation overrides","Documentation generation is one-way — changes to generated documentation are lost on regeneration","No built-in versioning of documentation — breaking changes to resource schemas require manual documentation updates"],"requires":["TypeScript 4.5+","JSDoc comments on service methods","TypeScript compiler API or similar for metadata extraction","documentation template or generator (e.g., TypeDoc, custom generator)"],"input_types":["TypeScript method signatures","JSDoc comments","parameter type information"],"output_types":["Markdown documentation","HTML documentation","JSON documentation objects","Claude-compatible context format"],"categories":["text-generation-language","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_2","uri":"capability://tool.use.integration.mcp.tool.execution.with.nestjs.dependency.injection","name":"mcp tool execution with nestjs dependency injection","description":"Automatically routes incoming MCP tool calls to decorated NestJS service methods, resolving all dependencies through NestJS's dependency injection container before method invocation. Handles parameter marshaling from MCP request format to TypeScript method arguments, error handling, and response serialization back to MCP protocol format, all while maintaining NestJS's service lifecycle and transaction context.","intents":["I want MCP tool calls to execute within my NestJS service context with full access to injected dependencies, databases, and middleware","I need proper error handling and logging for MCP tool execution that integrates with NestJS's exception filters and logging system","I want to use NestJS guards, interceptors, and pipes to validate and transform MCP tool inputs before execution"],"best_for":["applications where MCP tools need access to NestJS services, databases, or other injected dependencies","teams wanting unified error handling and logging across both REST and MCP endpoints","scenarios requiring request validation, authentication, or authorization for MCP tool calls"],"limitations":["Tool execution runs synchronously in the NestJS event loop — long-running tools block other requests unless explicitly made async","No built-in request queuing or rate limiting for MCP tool calls — must implement separately via NestJS guards or middleware","Error context from NestJS exceptions may not map cleanly to MCP error format — requires custom exception filters","Dependency injection resolution adds ~5-15ms overhead per tool call compared to direct function invocation"],"requires":["NestJS 9.0+","decorated service methods with @MCPTool or @MCPResource","MCP server initialized via mcp-nest module","async/await support for asynchronous tool execution"],"input_types":["MCP tool call requests (JSON)","parameter objects matching method signatures"],"output_types":["MCP tool result objects","error responses in MCP format","structured data from service methods"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_3","uri":"capability://safety.moderation.mcp.resource.and.prompt.schema.validation.and.registration","name":"mcp resource and prompt schema validation and registration","description":"Validates generated or manually-defined MCP resource schemas against the MCP specification before server startup, ensuring type correctness, required field presence, and schema structure compliance. Provides a registry system that tracks all registered resources, tools, and prompts with their schemas, enabling runtime introspection and preventing duplicate registrations or conflicting resource names.","intents":["I want to catch MCP schema errors at startup rather than having Claude fail to call tools at runtime","I need to inspect what resources and tools are registered on my MCP server for debugging and documentation","I want to prevent accidental duplicate tool registrations or naming conflicts across multiple NestJS modules"],"best_for":["production deployments where schema validation errors should fail fast at startup","teams building large MCP servers with many resources across multiple modules","debugging scenarios where developers need to verify what's actually registered on the MCP server"],"limitations":["Validation is synchronous and runs at module initialization — large numbers of resources (100+) may add noticeable startup latency","Schema validation only checks MCP spec compliance, not semantic correctness (e.g., whether a tool actually does what its description claims)","No built-in schema versioning or migration support — breaking schema changes require manual coordination","Registry introspection is read-only at runtime — cannot dynamically add/remove resources after server startup"],"requires":["MCP server initialized and module loaded","valid MCP schema definitions (auto-generated or manual)","access to MCP specification for validation rules"],"input_types":["MCP resource/tool/prompt schema objects","resource metadata (name, description, input schema)"],"output_types":["validation success/failure status","schema registry with all registered resources","error messages with schema violation details"],"categories":["safety-moderation","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_4","uri":"capability://tool.use.integration.multi.transport.mcp.server.support.stdio.sse.websocket","name":"multi-transport mcp server support (stdio, sse, websocket)","description":"Abstracts the underlying MCP transport layer, allowing a single MCP server implementation to be exposed via multiple transports (stdio for CLI, Server-Sent Events for HTTP, WebSocket for bidirectional communication) through configuration. Routes MCP protocol messages through the appropriate transport handler based on server configuration, enabling the same NestJS service logic to serve different client types without code duplication.","intents":["I want to expose my MCP server via stdio for local Claude Desktop integration and also via HTTP for remote clients","I need to support both unidirectional (SSE) and bidirectional (WebSocket) MCP clients from the same server implementation","I want to switch between transports (e.g., stdio for development, WebSocket for production) via configuration without code changes"],"best_for":["applications supporting multiple MCP client types (Claude Desktop, web clients, CLI tools)","development workflows requiring both local (stdio) and remote (HTTP/WebSocket) MCP access","teams deploying MCP servers in different environments (desktop, cloud, containerized) with different transport requirements"],"limitations":["Each transport has different latency and reliability characteristics — stdio is lowest-latency but local-only, WebSocket adds network overhead","SSE is unidirectional (server-to-client only) — cannot be used for bidirectional request-response patterns without polling","WebSocket connections require additional infrastructure (load balancer, connection pooling) for production deployments","Transport selection is typically configured at startup — switching transports at runtime requires server restart"],"requires":["NestJS 9.0+","mcp-nest module with transport handlers","for stdio: Node.js process stdin/stdout","for SSE: NestJS HTTP module (@nestjs/common)","for WebSocket: @nestjs/websockets or compatible WebSocket library"],"input_types":["MCP protocol messages (JSON)","transport-specific message framing (stdio newlines, SSE event format, WebSocket frames)"],"output_types":["MCP protocol responses","transport-specific formatted messages"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_5","uri":"capability://memory.knowledge.mcp.context.and.state.management.within.nestjs.request.scope","name":"mcp context and state management within nestjs request scope","description":"Manages MCP request context (client identity, session state, request metadata) within NestJS's request scope, allowing service methods to access context via dependency injection or context providers. Implements request-scoped providers that maintain context across the entire MCP tool execution chain, enabling stateful operations and per-client isolation without manual context threading through method parameters.","intents":["I want to track which Claude client or user initiated an MCP tool call and enforce per-client isolation","I need to maintain request context (authentication, session data) across multiple service calls within a single MCP tool execution","I want to use NestJS's request scope to automatically isolate state between concurrent MCP tool calls from different clients"],"best_for":["multi-tenant MCP servers where different clients need isolated state and data access","applications requiring authentication or authorization per MCP client","scenarios where MCP tools need to access request-specific data (user ID, session token, request ID) without explicit parameter passing"],"limitations":["Request-scoped providers add memory overhead — each concurrent MCP request maintains its own context instance","Context isolation is logical only — no cryptographic enforcement, relies on proper service implementation","Accessing context outside of request scope (e.g., in background jobs) requires explicit context propagation","NestJS request scope is tied to HTTP request lifecycle — stdio MCP connections may not map cleanly to request boundaries"],"requires":["NestJS 9.0+ with REQUEST scope support","@nestjs/common for @Scope(Scope.REQUEST) decorator","request-scoped providers defined in MCP module","MCP context middleware or interceptor to populate context on each request"],"input_types":["MCP request metadata (client ID, session info)","authentication tokens or credentials"],"output_types":["request-scoped context objects","isolated state per MCP client"],"categories":["memory-knowledge","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_6","uri":"capability://automation.workflow.mcp.server.health.checks.and.lifecycle.monitoring","name":"mcp server health checks and lifecycle monitoring","description":"Integrates with NestJS's health check system to provide MCP server health status (running, resource availability, transport connectivity), exposing health endpoints that Claude or monitoring tools can query. Tracks MCP server lifecycle events (startup, shutdown, errors) and integrates with NestJS's logger for structured logging of MCP operations, enabling observability and alerting on MCP server health.","intents":["I want to expose a health check endpoint that Claude or monitoring tools can query to verify the MCP server is running","I need to log all MCP server events (startup, tool calls, errors) in a structured format compatible with my logging infrastructure","I want to detect and alert on MCP server failures or resource exhaustion before Claude clients experience issues"],"best_for":["production MCP deployments requiring monitoring and alerting","teams using centralized logging (ELK, Datadog, CloudWatch) that need MCP events in structured format","applications with SLAs requiring visibility into MCP server health and availability"],"limitations":["Health checks are point-in-time snapshots — transient issues may not be captured","No built-in metrics collection (latency, throughput, error rates) — requires integration with Prometheus or similar","Logging adds overhead to each MCP operation — high-volume servers may need log sampling to avoid performance impact","Health check endpoints require separate HTTP server or transport — not available over stdio transport"],"requires":["NestJS 9.0+","@nestjs/terminus for health check support","NestJS logger or custom logger implementation","HTTP transport enabled for health check endpoints"],"input_types":["MCP server lifecycle events","resource availability status","error conditions"],"output_types":["health check response (UP/DOWN status)","structured log entries","monitoring metrics"],"categories":["automation-workflow","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_7","uri":"capability://memory.knowledge.mcp.resource.caching.and.memoization.with.ttl","name":"mcp resource caching and memoization with ttl","description":"Provides optional caching decorators (@Cacheable, @CacheInvalidate) for MCP resource methods, storing results in memory or external cache stores (Redis) with configurable TTL. Automatically invalidates cached results based on time or explicit invalidation triggers, reducing redundant computation for expensive MCP resources while maintaining freshness guarantees.","intents":["I want to cache results from expensive MCP resources (database queries, API calls) to reduce latency and load","I need to invalidate cached MCP resource results when underlying data changes","I want to share cached results across multiple concurrent MCP clients without recomputing"],"best_for":["MCP servers with expensive resource methods (database queries, external API calls)","read-heavy workloads where the same resources are queried repeatedly","distributed deployments where caching can reduce backend load"],"limitations":["In-memory caching is not shared across multiple server instances — requires Redis or external cache for distributed deployments","Cache invalidation is manual or TTL-based — no automatic invalidation on underlying data changes","Stale cache entries may be served if TTL is too long — requires careful TTL tuning per resource","Cache memory usage grows unbounded without eviction policy — requires explicit cache size limits or LRU eviction"],"requires":["NestJS 9.0+","@nestjs/cache-manager for caching support","optional: Redis for distributed caching","cache decorators applied to MCP resource methods"],"input_types":["MCP resource method parameters","cache configuration (TTL, invalidation triggers)"],"output_types":["cached resource results","cache hit/miss status"],"categories":["memory-knowledge","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_8","uri":"capability://safety.moderation.mcp.tool.input.validation.with.nestjs.pipes.and.class.validator","name":"mcp tool input validation with nestjs pipes and class-validator","description":"Integrates NestJS's validation pipes with MCP tool input parameters, automatically validating incoming tool arguments against TypeScript class definitions decorated with class-validator rules. Transforms raw MCP input objects into validated TypeScript class instances, providing type safety and input sanitization before tool execution, with detailed validation error messages returned to Claude.","intents":["I want to validate MCP tool inputs (required fields, type correctness, value ranges) before executing the tool","I need to transform raw JSON inputs from Claude into typed TypeScript objects with validation","I want validation errors to be returned to Claude in a clear format so it can retry with corrected inputs"],"best_for":["MCP servers with strict input requirements or complex validation rules","teams using class-validator for REST API validation who want consistent validation across MCP tools","production deployments where invalid inputs should be rejected before tool execution"],"limitations":["Validation rules must be defined in TypeScript classes — cannot be inferred from JSDoc or comments alone","Complex validation logic (cross-field validation, conditional rules) requires custom validator decorators","Validation errors are returned to Claude as structured objects — Claude must understand and handle validation error format","Validation adds latency (~5-10ms per tool call) — may be noticeable for high-volume, latency-sensitive applications"],"requires":["NestJS 9.0+","class-validator package installed","class-transformer for object transformation","TypeScript class definitions for tool input parameters"],"input_types":["raw JSON objects from MCP tool calls","class-validator decorated TypeScript classes"],"output_types":["validated and transformed TypeScript class instances","validation error messages in MCP format"],"categories":["safety-moderation","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"npm_npm-rekogmcp-nest__cap_9","uri":"capability://automation.workflow.mcp.server.configuration.management.with.environment.variables.and.config.service","name":"mcp server configuration management with environment variables and config service","description":"Integrates with NestJS's ConfigService to manage MCP server configuration (transport type, port, resource definitions, cache settings) through environment variables, .env files, or configuration objects. Provides type-safe configuration access via dependency injection, enabling different MCP server configurations across development, staging, and production environments without code changes.","intents":["I want to configure my MCP server (transport, port, features) via environment variables for different deployment environments","I need to enable/disable MCP features (caching, validation, specific resources) based on environment without code changes","I want type-safe access to MCP configuration throughout my NestJS application"],"best_for":["applications deployed across multiple environments (dev, staging, prod) with different MCP configurations","teams using infrastructure-as-code or containerization where configuration must be externalized","scenarios requiring feature flags or gradual rollout of MCP capabilities"],"limitations":["Configuration is loaded at application startup — runtime configuration changes require server restart","Complex configuration validation is manual — no built-in schema validation for MCP config objects","Environment variable naming conventions must be documented and followed — no IDE support for discovering available config keys","Secrets (API keys, credentials) in environment variables are less secure than dedicated secret management systems"],"requires":["NestJS 9.0+","@nestjs/config package",".env file or environment variables set in deployment environment","configuration schema defined in NestJS module"],"input_types":["environment variables",".env file entries","configuration objects"],"output_types":["typed configuration objects via ConfigService","MCP server configuration applied at startup"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":26,"verified":false,"data_access_risk":"high","permissions":["NestJS 9.0 or higher","Node.js 16.0 or higher","@nestjs/common package installed","MCP SDK (@modelcontextprotocol/sdk or compatible)","TypeScript 4.5 or higher","experimentalDecorators: true in tsconfig.json","reflect-metadata package installed and imported","@nestjs/common for @Injectable() and other decorators","NestJS 9.0+","@nestjs/common for ExceptionFilter interface"],"failure_modes":["Tightly coupled to NestJS ecosystem — cannot be used in non-NestJS Node.js applications","Requires understanding of NestJS module architecture and dependency injection patterns","MCP server runs in same process as NestJS app — no built-in process isolation or clustering support","Decorator-based approach requires TypeScript with experimentalDecorators enabled in tsconfig.json","Schema generation from types may not handle complex union types, generics, or recursive types perfectly — may require manual schema overrides","JSDoc comment parsing is regex-based and may fail on non-standard formatting or complex type descriptions","No built-in validation of generated schemas against MCP spec — invalid schemas only caught at runtime","Exception filters are synchronous — cannot perform async error recovery or fallback logic","Error mapping is manual — requires explicit exception filter implementation for each error type","MCP error format is limited compared to HTTP status codes — some error nuances may be lost in translation","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.34,"ecosystem":0.3,"match_graph":0.25,"freshness":0.52,"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":"2026-05-24T12:16:24.482Z","last_scraped_at":"2026-05-03T14:23:50.580Z","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-rekogmcp-nest","compare_url":"https://unfragile.ai/compare?artifact=npm-rekogmcp-nest"}},"signature":"dAHqjZJtnKUuJroUnXzEQPBz98DT9WJcHnOW+kIvy6aG8ZdevSnrbl8lWMABoJv8xEIU0AkPOiCfQlzvqY0ECQ==","signedAt":"2026-06-20T00:44:06.160Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/npm-rekogmcp-nest","artifact":"https://unfragile.ai/npm-rekogmcp-nest","verify":"https://unfragile.ai/api/v1/verify?slug=npm-rekogmcp-nest","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"}}