| Ecosystem | 0 | 0 |
| Match Graph | 0 | 0 |
| Pricing | Free | Free |
| Capabilities | 12 decomposed | 9 decomposed |
| Times Matched | 0 | 0 |
Translates browser-incompatible MCP transport protocols (STDIO, SSE, Streamable HTTP) into browser-friendly transports (SSE, WebSocket) through an Express-based proxy server. The mcpProxy function maintains bidirectional message routing between transportToClient and transportToServer, enabling browsers to interact with local and remote MCP servers without direct process spawning or long-lived pipe management.
Unique: Uses MCP SDK's transport abstraction layer to dynamically support STDIO, SSE, and Streamable HTTP without hardcoding transport-specific logic, enabling single proxy to handle heterogeneous server implementations. Session token generation at startup provides lightweight security without external auth infrastructure.
vs alternatives: More flexible than custom STDIO wrappers because it abstracts transport selection and supports remote servers via SSE/HTTP, not just local processes.
React-based web interface (built with Radix UI and Vite) that dynamically renders MCP server capabilities including tools, resources, and prompts. The UI introspects server metadata, generates forms for tool parameters, executes tools via the proxy, and displays results with full protocol visibility. Connection management hooks (useConnection) maintain WebSocket/SSE state and handle reconnection logic.
Unique: Dynamically generates parameter forms from MCP tool schemas using Radix UI components, enabling zero-configuration testing of arbitrary MCP servers. useConnection hook manages transport state and reconnection without requiring manual connection lifecycle management.
vs alternatives: More user-friendly than curl/CLI testing because it auto-generates forms from schemas and provides visual feedback; more accessible than writing custom client code.
Organizes inspector into three interdependent npm packages (inspector-client, inspector-server, inspector-cli) using npm workspaces. Shared dependencies are hoisted to root package.json, reducing duplication and ensuring version consistency. Build scripts coordinate compilation across packages (TypeScript → JavaScript), and development scripts enable simultaneous development of all packages with hot-reload support via Vite.
Unique: Uses npm workspaces to manage three tightly-coupled packages (client, server, CLI) with shared dependencies hoisted to root, reducing duplication and ensuring version consistency. Vite dev server enables simultaneous development with hot-reload.
vs alternatives: More maintainable than separate repositories because shared dependencies are centralized; more flexible than a single package because each component can be deployed independently.
Compiles TypeScript source code to JavaScript using TypeScript compiler, then bundles the web client using Vite for development and production builds. Vite provides hot module replacement (HMR) during development, enabling instant feedback on code changes without full page reloads. Production builds are minified and optimized for browser delivery. Build configuration is defined in vite.config.ts with React plugin for JSX support.
Unique: Uses Vite for development (with HMR) and production bundling, providing fast iteration during development and optimized builds for deployment. TypeScript compilation is integrated into Vite pipeline, eliminating separate build step.
vs alternatives: Faster development iteration than Webpack because Vite uses native ES modules; smaller production bundles than Create React App because Vite optimizes aggressively.
Abstracts MCP transport selection (STDIO, SSE, Streamable HTTP) behind a unified client interface using the MCP SDK's transport layer. The proxy server dynamically instantiates the correct transport based on user configuration, enabling seamless switching between local executable servers, remote SSE endpoints, and HTTP-based servers without code changes. Transport initialization is lazy-loaded on first connection.
Unique: Leverages MCP SDK's transport abstraction to support STDIO, SSE, and Streamable HTTP from a single proxy without transport-specific branching logic. Transport selection is configuration-driven, not code-driven, enabling runtime switching.
vs alternatives: More flexible than transport-specific clients because it abstracts protocol differences; more maintainable than custom transport wrappers because it uses official SDK implementations.
Generates a cryptographically random session token at proxy startup and validates it on every request via environment variable (MCP_PROXY_AUTH_TOKEN) or URL parameter. Token is not persisted across restarts, preventing unauthorized access to local process execution. Validation occurs before any MCP protocol message is routed, providing a lightweight security boundary without external auth infrastructure.
Unique: Uses random token generation at startup rather than persistent credentials, making it suitable for ephemeral development environments. Token validation is enforced before proxy initialization, preventing unauthorized process spawning.
vs alternatives: Simpler than OAuth/SAML for local development but less suitable for production; more secure than no authentication because it prevents accidental exposure to other processes.
Commander.js-based CLI tool (@modelcontextprotocol/inspector-cli) that enables non-interactive, programmatic interaction with MCP servers. Supports transport configuration via CLI flags, tool execution with JSON parameter input, and structured output for scripting. CLI client methods wrap MCP SDK calls, enabling integration into CI/CD pipelines, automation scripts, and headless testing frameworks without requiring a web browser.
Unique: Provides CLI wrapper around MCP SDK client methods, enabling headless testing without web UI. Each invocation is stateless, making it suitable for CI/CD pipelines and containerized environments.
vs alternatives: More suitable for automation than web UI because it's scriptable and doesn't require browser; more accessible than raw SDK usage because CLI abstracts transport configuration.
Captures and displays all MCP protocol messages (JSON-RPC 2.0 requests and responses) flowing through the proxy in real-time. Messages are logged with timestamps, method names, parameters, and results. The web UI displays logs in a scrollable panel with syntax highlighting, enabling developers to inspect protocol details without external tools like Wireshark. Logs are stored in browser memory (no persistence across page reloads).
Unique: Intercepts all MCP protocol messages at the proxy layer before they reach the browser, providing complete visibility into bidirectional communication. Logs are rendered in the web UI with syntax highlighting, eliminating need for external protocol analyzers.
vs alternatives: More convenient than Wireshark or tcpdump because it's integrated into the inspector UI and understands MCP protocol structure; more complete than server-side logging because it captures both directions.
+4 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 inspector at 32/100.
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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