modelcontextprotocol/inspector

Features

• Model Context Protocol - Implements a standardized protocol for connecting AI models to local data sources and external tools.
• Compliance Debugging - Provides an interactive interface to inspect protocol compliance and debug server behavior in real time.
• LLM Tooling Integrations - Implements a standardized interface for large language models to discover and invoke external tools and data.
• Model Context Protocol Implementations - Implements the standardized Model Context Protocol client to consume tools, resources, and prompts across various transports.
• Model Context Protocol Implementations - Defines executable functions that a model can trigger to perform actions or retrieve information.
• Protocol Debugging - Provides a web-based tool for inspecting and validating tools, resources, and prompt templates in MCP servers.
• Server Inspection Interfaces - Provides an interactive interface to discover and execute tools, prompts, and resources provided by an MCP server.
• API Client Connectivity - Coordinates the creation, permissions, and termination of multiple isolated connections between clients and servers.
• Dynamic Tool Discovery - Provides mechanisms for runtime introspection of external tool capabilities, schemas, and metadata via the protocol.
• External System Integrations - Implements a standardized way for AI models to connect with and execute tasks across external data sources and workflows.
• External Tool Discovery - Enables the dynamic discovery of available tools and their schemas from remote servers.
• Input Validation Schemas - Uses JSON Schema to enforce strict input and output contracts for LLM tool and prompt interactions.
• MCP Servers - Implements Model Context Protocol servers that expose tools, resources, and prompts to AI clients.
• Resource Exposure - Exposes specialized tools, prompts, and read-only data resources through standardized protocol primitives.
• Transport Layer Connectivity - Manages connectivity to servers using various transport layers including standard I/O, SSE, and streamable HTTP.
• Transport Monitoring - Ships a transport proxy for monitoring real-time message exchanges and logs between MCP clients and servers.
• MCP Subregistries - Exposes server metadata via OpenAPI and provides custom ratings and security scans.
• Structured Tool Outputs - Returns tool outputs as any valid JSON value based on defined output schemas.
• Tool Registration - Registers callable tools that a model can trigger to perform specific actions.
• Model Server Clients - Provides the client-side integration logic needed to consume services from standardized Model Context Protocol servers.
• Prompt Template Testing - Allows executing prompt templates with custom inputs to validate and preview generated model messages.
• Tool Calling - Provides the ability to execute external functions and tools as requested by a language model.
• Tool Schema Definitions - Implements standardized JSON Schema definitions to describe tool interfaces for AI agents.
• MCP Servers and Directories - Provides a way to search open catalogs and APIs to find and install available servers.
• Local File Operations - Performs basic filesystem operations including reading, creating, and searching local documents.
• Structured Resource Exposure - Provides structured data and context that can be retrieved and used by AI models.
• Server Capability Discovery - Provides mechanisms for querying servers to determine supported groups, versions, and available resources.
• Server Metadata Schemas - Defines a consistent schema for server identity, runtime configuration, and capabilities.
• Debugging and Inspection Tools - Offers interactive tools to inspect available resources, metadata, and active subscription states.
• Server Capability Inspection - Verifies server-exposed tools and resources by monitoring real-time notification streams.
• Tool Invocation Interfaces - Implements a protocol for models to trigger specific external functions using provided arguments.
• Server Development Tooling - Provides a transport-agnostic interface to invoke and validate tools, prompts, and resources.
• Client Capability Declarations - Allows clients to declare supported capabilities and log levels on every request to ensure server-side feature compatibility.
• Tool Discovery - Retrieves paginated lists of tools exposed by a server, including their names and JSON schemas.
• Server Metadata Publishers - Registers server details and capabilities in a centralized repository to facilitate discovery.
• MCP Registry Integrations - Integrates server metadata into clients and sub-registries using OpenAPI specifications and SDKs.
• Server Metadata APIs - Retrieves lists of available servers and version details through a REST API.
• Capability Negotiation Protocols - Synchronizes supported protocol versions and optional extensions by exchanging feature maps during the initial handshake.
• Response Streaming - Processes response data incrementally via Server-Sent Events or standard I/O to support real-time progress notifications.
• Protocol Debugging - Uses a transport proxy and web interface to decode and validate protocol message exchanges.
• Transport Protocols - Implements the transport protocol specifications for moving data between clients and servers via local and remote methods.
• Stdio Transports - Implements a communication channel that uses standard input and output for exchanging JSON-RPC messages between processes.
• HTTP Exchange Inspectors - Includes a transport proxy to inspect and visualize the full lifecycle of HTTP message exchanges between clients and servers.
• Internal Messaging Protocols - Manages the bidirectional exchange of JSON-RPC messages and stateful sessions between host applications and servers.
• JSON-RPC Implementations - Implements the JSON-RPC protocol for structured, bidirectional communication between clients and servers.
• Protocol Connectivity Diagnostics - Verifies network connectivity and protocol handshakes by executing raw command sequences.
• Transport Abstractions - Provides a unified interface that abstracts communication across different transports like stdio and SSE.
• Protocol Interface Standards - Implements a shared OpenAPI specification to ensure consistent interfaces across different registry providers.
• Compliance Enforcement Tools - Provides automated verification that server implementations adhere to the standardized Model Context Protocol specification.
• Filesystem Access Boundaries - Specifies permitted directory scopes to constrain the server's filesystem operations.
• Remote Server Registrations - Defines publicly accessible server locations using HTTP or SSE transports to enable multi-tenant deployment configurations.
• Tool Exposure Interfaces - Provides standardized interfaces that allow AI agents to discover and invoke external functional tools and data.
• Session Coordination - Coordinates connection lifecycles, including handshakes and heartbeats, to maintain stable communication sessions.
• Protocol Compliance Testing - Verifies that server implementations adhere strictly to the Model Context Protocol specification and JSON-RPC standards.
• Tool Execution Validation - Provides the ability to execute tools with custom parameters and inspect outputs to validate functional correctness.
• Long-term Memory Stores - Stores and retrieves information using a knowledge graph to provide a long-term memory system.
• Task Completion Signals - Signals the client when out-of-band interactions are finished to allow the system to retry blocked requests.
• User Input Elicitation - Implements a protocol for requesting structured additional information from users via the client.
• Task Input Elicitation - Collects required structured data from clients to satisfy requests during the execution of asynchronous tasks.
• MCP Server Management - Offers interfaces for managing external MCP server connections, including on-demand connection and disconnection to preserve context.
• Prompt Retrieval Interfaces - Implements interfaces for fetching and serializing prompt templates from servers.
• Task Cancellation Handlers - Provides mechanisms to terminate active agent tasks to prevent unnecessary resource consumption.
• Workflow Validation - Verifies that agentic loops and tool call sequences produce correct structured results and handle errors.
• AI Prompt Engineering Templates - Offers structured instruction sets and context definitions as templates to guide AI model interactions.
• Tool Result Aggregators - Reintegrates outputs from executed tools back into the model's conversation context.
• Model Completion Requests - Enables servers to trigger text, audio, or image generation requests through a client.
• Selection Controls - Provides mechanisms to restrict or force the use of specific tools during model generation.
• Human-in-the-Loop Interfaces - Integrates human approval steps into automated agent workflows during model response sampling.
• Remote Connectivity - Enables secure access to tools and resources hosted on remote internet servers via URLs.
• Model Context Protocol Clients - Provides the client-side connectivity required to trigger recursive model interactions and agentic behaviors.
• Natural Language Query Interfaces - Provides an interface for users to interact with tools and systems using natural language prompts.
• Prompt Templates - Provides systems for defining and managing reusable prompt structures for language models.
• Paginated Results - Returns lists of available resources, templates, and tools in smaller paginated chunks to optimize performance.
• Live Update Subscriptions - Allows clients to subscribe to real-time status changes for specific tasks via push notifications.
• Workflow Result Retrieval - Fetches the final outputs of completed long-running asynchronous processes using unique task identifiers.
• Task Status Push Notifications - Pushes real-time status changes for asynchronous tasks to clients via protocol notifications.
• UI Content Retrieval - Delivers bundled HTML content to a host via a resource handler using a specific URI scheme.
• Local Development Servers - Connects clients to local resource servers using configuration files for secure inter-process communication.
• Server Capability Exposure - Publishes available resources, tools, and prompts to clients to extend the host's functional capabilities.
• Protocol Interaction CLIs - Executes protocol methods such as listing tools or calling functions directly from the command line.
• Protocol Argument Suggestions - Returns contextual value suggestions for arguments used within prompt templates and resource URIs.
• Task Completion Notifications - Notifies the client upon the completion of out-of-band tasks to resume the primary process.
• Agent-to-Server Bridges - Establishes a bridge that allows frontend interfaces to trigger server-side tools and receive their execution results.
• Background Task Managers - Tracks the status, retrieves results, and manages the cancellation of long-running asynchronous operations.
• Client Resource Root Definitions - Constrains the server's scope of operation by specifying local filesystem root paths exposed by the client.
• Connection Establishment Protocols - Establishes bidirectional network connections to servers using stdio or Server-Sent Events transports.
• Custom Transport Protocols - Creates bidirectional communication channels using various transports that preserve JSON-RPC formats.
• Protocol Negotiation - Coordinates compatible protocol versions between clients and servers during the handshake process.
• Network Protocol Testing - Debugs transport layers like stdio and SSE to ensure stable communication between clients and servers.
• Connection and Session Management - Tracks and maintains the lifecycle of active network connections through handshakes and heartbeats.
• Connection Lifecycle Managers - Handles automated state transitions, heartbeats, and reconnection logic to maintain stable communication channels.
• Interactive Input Requests - Sends requests for missing information and delays execution until the required data is provided.
• Request Cancellations - Allows the immediate termination of pending network requests by closing response streams.
• Asynchronous Operation Trackers - Retrieves paginated collections of active tasks to track multiple concurrent asynchronous operations.
• Iframe Sandboxing - Isolates interactive UI components within sandboxed iframes to prevent unauthorized DOM access to the host.
• Asynchronous Task Execution - Tracks long-running operations using unique identifiers to poll for status and retrieve final results.
• Task Coordinations - Synchronizes workflows and tracks the progress of expensive operations, pausing when user input is required.
• Task Status Polling - Implements patterns for checking the current state, progress, and result of asynchronous background operations.
• JSON Schema Validation - Ensures embedded message schemas conform to declared dialects to maintain protocol compatibility.
• Request Lifecycle Management - Manages the execution flow of requests, including standardized error reporting and task cancellation.
• Task Progress Monitors - Monitors the real-time status of asynchronous operations through polling or status update notifications.
• Log Streaming - Sends structured log messages with RFC 5424 severity levels to provide visibility into internal events.
• Log Stream Monitors - Streams server logs and notifications in real time to allow developers to debug internal behavior.
• Structured Logging - Implements structured logging using RFC 5424 severity levels to ensure consistent runtime visibility.
• Host Communication Interfaces - Enables the exchange of data and tool calls between a rendered UI and the host application using JSON-RPC.
• Interactive UI Delivery - Serves HTML content through a standardized URI scheme to provide rich visual experiences.
• Interactive Widgets - Renders searchable pickers, charts, and live dashboards inline within the chat interface.
• Interactive Model Output Rendering - Renders AI model responses as interactive UI components like charts, forms, and video players.
• Sandboxed Rendering Components - Isolates interactive server-provided HTML components within secure sandboxed iframes to protect the host DOM.
• Model Context Protocol - Visual testing and debugging tool for MCP servers.
• Development and Debugging Tools - Official visual tool for debugging and testing MCP server interactions.
• Model Context Protocol - Visual testing and debugging tool for protocol development.

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