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| Match Graph | 0 | 0 |
| Pricing | Free | Free |
| Capabilities | 17 decomposed | 9 decomposed |
| Times Matched | 0 | 0 |
Implements bidirectional JSON-RPC 2.0 message serialization using System.Text.Json with custom converters for MCP protocol types. The SDK handles request/response/notification message framing, error serialization with standardized error codes, and automatic message ID generation for request tracking. Built on top of ModelContextProtocol.Core package with pluggable JSON serialization configuration to support custom type converters and null-handling strategies.
Unique: Uses System.Text.Json source generators for zero-reflection serialization at compile-time, reducing runtime overhead compared to reflection-based JSON libraries. Provides MCP-specific type converters that handle protocol-level concerns like capability negotiation and resource subscription serialization.
vs alternatives: Faster and more memory-efficient than Newtonsoft.Json-based implementations due to source generation, with native .NET 6+ integration and no external dependencies beyond the SDK itself.
Provides a fluent builder API for configuring MCP servers with tool, prompt, and resource capabilities. The ServerOptions builder pattern allows declarative registration of handlers via dependency injection, with automatic parameter resolution from method signatures. Supports both standalone servers and ASP.NET Core integration, with built-in support for request/response filtering, cancellation tokens, and structured error handling. The server manages the full lifecycle including initialization, capability advertisement, and graceful shutdown.
Unique: Implements automatic parameter resolution from method signatures using reflection and Roslyn source generators, eliminating manual parameter mapping. Integrates directly with Microsoft.Extensions.DependencyInjection, allowing capabilities to depend on any registered service without explicit wiring.
vs alternatives: More declarative and type-safe than manual JSON-RPC handler registration, with compile-time verification of tool schemas via Roslyn analyzers that catch schema mismatches before runtime.
Provides infrastructure for managing tool invocations that take significant time to complete, with built-in progress reporting to clients. Tools can report progress updates during execution, and clients receive notifications of progress changes. The SDK handles progress state management, client notification delivery, and task cancellation. Supports both determinate progress (percentage complete) and indeterminate progress (activity indication).
Unique: Integrates progress reporting directly into the MCP protocol with automatic client notification, allowing LLMs to understand task progress without polling. Supports both determinate and indeterminate progress with structured progress data.
vs alternatives: More efficient than polling-based progress tracking, with push-based notifications reducing client overhead for long-running operations.
Enables servers to push resource change notifications to subscribed clients without requiring polling. Clients subscribe to resources with optional filters, and servers send notifications when resource content changes. The SDK manages subscription state, client notification delivery, and cleanup on unsubscription. Supports both full content updates and delta updates for efficient bandwidth usage. Includes automatic resubscription on connection recovery.
Unique: Implements server-initiated push notifications for resource changes, allowing clients to receive updates without polling. Supports both full and delta updates with automatic subscription lifecycle management.
vs alternatives: More efficient than polling-based resource monitoring, with push-based notifications reducing latency and bandwidth for real-time resource synchronization.
Provides seamless integration of MCP servers into ASP.NET Core applications via dedicated middleware and service registration extensions. The integration allows MCP servers to run alongside standard ASP.NET Core endpoints, sharing dependency injection, configuration, and authentication/authorization infrastructure. Supports both HTTP transport and stdio transport for MCP communication. Includes automatic OpenAPI/Swagger documentation generation for MCP capabilities.
Unique: Provides first-class ASP.NET Core integration with automatic middleware registration and shared dependency injection, eliminating the need for separate MCP server processes. Supports both HTTP and stdio transports within the same ASP.NET Core application.
vs alternatives: More integrated than standalone MCP servers, with shared authentication, configuration, and dependency injection reducing operational complexity.
Implements comprehensive cancellation support via CancellationToken throughout the SDK, allowing clients to cancel long-running operations. Provides structured error handling with standardized MCP error codes (parse error, invalid request, method not found, etc.) and detailed error messages. Errors include optional error data for additional context. Supports both synchronous and asynchronous error handling with proper exception propagation.
Unique: Implements cancellation as a first-class concept with CancellationToken support throughout the SDK, allowing graceful cancellation of long-running operations. Provides structured error codes aligned with JSON-RPC 2.0 specification.
vs alternatives: More robust than unstructured error handling, with standardized error codes and cancellation support enabling proper error recovery in client applications.
Provides Roslyn-based analyzers that verify MCP server implementations at compile-time, catching common errors before runtime. Source generators emit boilerplate code for tool registration, parameter resolution, and schema generation, eliminating manual code writing. Analyzers check for schema mismatches between tool definitions and implementations, missing required parameters, and invalid capability configurations. Generators produce efficient, reflection-free code for handler invocation.
Unique: Uses Roslyn source generators to emit zero-reflection handler code at compile-time, eliminating runtime reflection overhead. Includes custom analyzers that verify schema consistency between tool definitions and implementations.
vs alternatives: More efficient than reflection-based implementations, with compile-time code generation producing optimized handler invocation code and compile-time verification catching errors before runtime.
Implements OAuth 2.0 client-side flows for authenticating with OAuth-protected MCP servers. Handles authorization code flow with automatic redirect URI handling, token exchange, and token refresh. Manages token storage in client session with automatic token refresh before expiration. Supports both interactive (user-initiated) and non-interactive (client credentials) flows. Integrates with platform-specific authentication UI for user consent.
Unique: Implements automatic token refresh with expiration tracking, eliminating manual token management in client code. Supports both interactive and non-interactive flows with platform-specific UI integration.
vs alternatives: More convenient than manual OAuth implementation, with automatic token refresh and session management reducing client code complexity.
+9 more capabilities
Executes SQL queries against Supabase PostgreSQL instances through the Model Context Protocol, translating natural language or structured query requests into parameterized SQL statements. Uses MCP's tool-calling interface to expose database operations as callable functions with schema validation, enabling LLM agents to perform CRUD operations, joins, and aggregations with automatic connection pooling and credential management through Supabase client SDK.
Unique: Exposes Supabase PostgreSQL as MCP tools with automatic credential injection from Supabase client SDK, eliminating manual connection string management and enabling seamless LLM-to-database queries within Claude or compatible agents
vs alternatives: Tighter integration than generic SQL MCP servers because it leverages Supabase's built-in authentication and connection pooling rather than requiring separate database credential configuration
Exposes Supabase Auth session state and user metadata through MCP tools, allowing agents to inspect current authentication context, retrieve user profiles, and trigger auth-related operations. Integrates with Supabase's JWT-based auth system to validate sessions and access user claims without re-authenticating, using the Supabase client's built-in session management.
Unique: Integrates Supabase's JWT-based auth system directly into MCP tool interface, allowing agents to inspect and act on auth state without managing separate credential stores or re-authentication flows
vs alternatives: More seamless than generic auth MCP servers because it leverages Supabase's built-in session management and avoids redundant credential passing between agent and auth system
Invokes Supabase Edge Functions (serverless TypeScript/JavaScript functions) through MCP tools, passing parameters and receiving results with optional streaming support. Uses Supabase's edge function HTTP API to trigger functions with automatic authentication headers and response parsing, enabling agents to execute custom business logic without embedding it in the agent itself.
Supabase scores higher at 42/100 vs C# MCP SDK at 22/100.
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Unique: Exposes Supabase Edge Functions as MCP tools with automatic authentication and response parsing, allowing agents to invoke custom serverless logic without managing HTTP clients or credential injection
vs alternatives: More integrated than generic HTTP MCP tools because it handles Supabase-specific authentication, error handling, and response formatting automatically
Subscribes to real-time changes on Supabase tables through MCP's event streaming interface, using Supabase's PostgreSQL LISTEN/NOTIFY mechanism to push INSERT, UPDATE, and DELETE events to agents. Maintains persistent WebSocket connections and filters events by table and row-level policies, enabling agents to react to database changes without polling.
Unique: Bridges Supabase's PostgreSQL LISTEN/NOTIFY real-time system with MCP's tool interface, enabling agents to subscribe to database changes without managing WebSocket connections or event serialization
vs alternatives: More efficient than polling-based approaches because it uses Supabase's native real-time infrastructure rather than repeated database queries
Manages files in Supabase Storage buckets through MCP tools, supporting upload, download, list, and delete operations with automatic authentication and path-based access control. Uses Supabase's S3-compatible storage API with built-in support for public/private buckets and signed URLs for temporary access, enabling agents to handle file I/O without managing cloud storage credentials.
Unique: Exposes Supabase Storage's S3-compatible API as MCP tools with automatic authentication and signed URL generation, eliminating the need for agents to manage cloud storage credentials or generate temporary access tokens
vs alternatives: More integrated than generic S3 MCP tools because it leverages Supabase's built-in bucket policies and authentication rather than requiring separate AWS credentials
Performs semantic similarity searches on vector embeddings stored in Supabase PostgreSQL using pgvector extension, translating natural language queries into embedding vectors and executing cosine/L2 distance searches. Integrates with embedding providers (OpenAI, Cohere) or uses pre-computed embeddings, enabling agents to retrieve semantically similar documents or records without full-text search limitations.
Unique: Integrates pgvector directly into MCP tools with automatic embedding generation and distance calculation, enabling agents to perform semantic search without managing separate vector database infrastructure
vs alternatives: More efficient than external vector databases (Pinecone, Weaviate) for Supabase users because it colocates embeddings with relational data, reducing network latency and simplifying data synchronization
Exposes Supabase database schema information through MCP tools, allowing agents to discover table structures, column types, constraints, and relationships without manual schema documentation. Queries PostgreSQL information_schema and Supabase metadata tables to dynamically generate schema descriptions, enabling agents to construct valid queries and understand data relationships.
Unique: Queries Supabase's PostgreSQL information_schema directly through MCP tools, enabling agents to dynamically discover and adapt to database schemas without pre-configured schema definitions
vs alternatives: More flexible than static schema definitions because it reflects live database state, including recent migrations or schema changes
Enforces Supabase Row-Level Security policies within agent queries, ensuring that agents can only access rows permitted by RLS rules defined in the database. Evaluates policies based on authenticated user context (JWT claims, user ID) and applies WHERE clause filters automatically, preventing unauthorized data access at the database layer rather than application layer.
Unique: Delegates authorization enforcement to PostgreSQL RLS policies rather than implementing authorization in agent code, ensuring that data access rules are centralized and cannot be bypassed by agent logic
vs alternatives: More secure than application-level authorization because RLS is enforced at the database layer, preventing accidental data leaks even if agent code has bugs
+1 more capabilities