Supabase ranks higher at 42/100 vs カーリル for AI / CALIL Library MCP at 30/100. Capability-level comparison backed by match graph evidence from real search data.
| Feature | カーリル for AI / CALIL Library MCP | Supabase |
|---|---|---|
| Type | MCP Server | MCP Server |
| UnfragileRank | 30/100 | 42/100 |
| Adoption | 0 | 0 |
| Quality | 0 |
| 0 |
| Ecosystem | 1 | 0 |
| Match Graph | 0 | 0 |
| Pricing | Free | Free |
| Capabilities | 5 decomposed | 9 decomposed |
| Times Matched | 0 | 0 |
This capability allows AI to perform library catalog searches across over 7,400 libraries in Japan using the Model Context Protocol (MCP). It employs a structured query approach to interact with library databases, ensuring that search requests are contextually relevant and optimized for AI interpretation. The integration of MCP allows for seamless communication between the AI and library systems, making it distinct from traditional search APIs that may lack contextual awareness.
Unique: Utilizes the Model Context Protocol to enhance search context and relevance, unlike traditional REST APIs that may not consider user context.
vs alternatives: More contextually aware than standard library search APIs, which often return generic results without understanding user intent.
This capability allows users to submit queries that span multiple libraries simultaneously, leveraging the MCP to aggregate results efficiently. It implements a federated search mechanism that combines responses from various library databases into a single, coherent output. This approach is distinct as it minimizes the need for multiple API calls and provides a unified response format.
Unique: Employs a federated search approach that reduces the complexity of making multiple API calls, providing a streamlined experience.
vs alternatives: More efficient than traditional methods that require separate queries for each library, saving time and resources.
This capability enhances the relevance of search results by applying contextual ranking algorithms that consider user intent and previous interactions. It utilizes machine learning techniques to analyze user behavior and preferences, adjusting the ranking of search results dynamically. This feature is distinct as it goes beyond simple keyword matching, focusing on delivering personalized results.
Unique: Incorporates user behavior analytics to dynamically adjust search result rankings, unlike static ranking systems.
vs alternatives: Offers a more personalized search experience compared to traditional library search systems that rely solely on keyword relevance.
This capability allows AI to check the real-time availability of books across participating libraries, utilizing live data feeds from library systems. It implements a polling mechanism that retrieves the latest status of items, ensuring users receive up-to-date information. This feature is particularly useful for applications that require immediate access to library resources.
Unique: Utilizes live data feeds for real-time availability checks, unlike traditional systems that may rely on cached data.
vs alternatives: Provides immediate availability updates, which is superior to systems that only offer periodic updates.
This capability leverages AI to provide personalized book recommendations based on user preferences and search history. It uses collaborative filtering and content-based filtering techniques to analyze user data and suggest relevant titles. This approach is distinct as it combines multiple recommendation strategies to enhance accuracy and user satisfaction.
Unique: Combines collaborative and content-based filtering to improve recommendation accuracy, unlike simpler recommendation systems.
vs alternatives: Delivers more relevant recommendations than traditional systems that rely on a single filtering method.
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 カーリル for AI / CALIL Library MCP at 30/100.
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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
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