Model Context Protocol

Docs

• Antitrust Policy: MCP Project Antitrust Policy for participants and contributors
• Authorization Charter: Charter for the MCP Authorization Interest Group.
• Group Charter Template: Template for MCP Working Group and Interest Group charters.
• Contributor Communication: Communication strategy and framework for the Model Context Protocol community
• Contributing to MCP: How to contribute to the Model Context Protocol project
• Contributor Ladder: Roles, responsibilities, and advancement criteria for MCP contributors, from first contribution to Core Maintainer
• Design Principles: The core design principles that guide the development of the Model Context Protocol.
• Feature Lifecycle and Deprecation Policy: How individual MCP specification features move through Active, Deprecated, and Removed states, and the timeline implementers can plan against.
• File Uploads Charter: Charter for the MCP File Uploads Working Group.
• Governance and Stewardship: Learn about the Model Context Protocol's governance structure and how to participate in the community
• Inspector V2 Working Group Charter: Charter for the Inspector V2 Working Group, a Working Group of the Model Context Protocol community.
• Interceptors Charter: Charter for the MCP Interceptors Working Group.
• Registry Charter: Charter for the MCP Registry Working Group.
• SDK Tiering System: Feature completeness, protocol support, and maintenance commitment levels for Model Context Protocol SDKs
• SDK Working Group Charter: Charter for the MCP SDK Working Group.
• SEP Guidelines: Specification Enhancement Proposal (SEP) guidelines for proposing changes to the Model Context Protocol
• Server Card Charter: Charter for the MCP Server Card Working Group.
• Skills Over MCP Charter: Charter for the MCP Skills Over MCP Working Group.
• Tool Annotations Charter: Charter for the MCP Tool Annotations Interest Group.
• Triggers and Events Charter: Charter for the MCP Triggers and Events Working Group.
• Working and Interest Groups: Governance rules for the two forms of collaborative groups within the Model Context Protocol community — Working Groups and Interest Groups.
• Roadmap: Our plans for evolving Model Context Protocol
• Build an MCP client: Get started building your own client that can integrate with all MCP servers.
• Build an MCP server: Get started building your own server to use in Claude for Desktop and other clients.
• Build with Agent Skills: Use agent skills to guide AI coding assistants through MCP server design and implementation
• Client Best Practices: Patterns for scaling MCP host applications across many servers and tools.
• Connect to local MCP servers: Learn how to extend Claude Desktop with local MCP servers to enable file system access and other powerful integrations
• Connect to remote MCP Servers: Learn how to connect Claude to remote MCP servers and extend its capabilities with internet-hosted tools and data sources
• What is the Model Context Protocol (MCP)?
• Architecture overview
• Understanding MCP clients
• Understanding MCP servers
• Versioning
• SDKs: Official SDKs for building with Model Context Protocol
• Debugging: A comprehensive guide to debugging Model Context Protocol (MCP) integrations
• MCP Inspector: In-depth guide to using the MCP Inspector for testing and debugging Model Context Protocol servers
• Understanding Authorization in MCP: Learn how to implement secure authorization for MCP servers using OAuth 2.1 to protect sensitive resources and operations
• Security Best Practices: Security considerations, attack vectors, and best practices for MCP implementations
• Example Servers: A list of example servers and implementations
• Build an MCP App: Getting started guide for building interactive UI applications with MCP Apps
• MCP Apps: Interactive UI applications that render inside MCP hosts like Claude Desktop
• Enterprise-Managed Authorization: Centralized access control for MCP in enterprise environments via identity providers
• OAuth Client Credentials: Machine-to-machine authentication for MCP using the OAuth 2.0 client credentials flow
• Authorization Extensions: Supplementary authorization mechanisms for the Model Context Protocol
• Extension Support Matrix: Which MCP clients implement which official extensions
• Extensions Overview: Optional extensions to the Model Context Protocol
• MCP Tasks: Asynchronous task execution for long-running MCP operations
• The MCP Registry
• How to Authenticate When Publishing to the Official MCP Registry
• Frequently Asked Questions
• How to Automate Publishing with GitHub Actions
• The MCP Registry Moderation Policy
• MCP Registry Supported Package Types
• Quickstart: Publish an MCP Server to the MCP Registry
• MCP Registry Aggregators
• Publishing Remote Servers
• Official MCP Registry Terms of Service
• Versioning Published MCP Servers
• SEP-1024: MCP Client Security Requirements for Local Server Installation: MCP Client Security Requirements for Local Server Installation
• SEP-1034: Support default values for all primitive types in elicitation schemas: Support default values for all primitive types in elicitation schemas
• SEP-1036: URL Mode Elicitation for secure out-of-band interactions: URL Mode Elicitation for secure out-of-band interactions
• SEP-1046: Support OAuth client credentials flow in authorization: Support OAuth client credentials flow in authorization
• SEP-1302: Formalize Working Groups and Interest Groups in MCP Governance: Formalize Working Groups and Interest Groups in MCP Governance
• SEP-1303: Input Validation Errors as Tool Execution Errors: Input Validation Errors as Tool Execution Errors
• SEP-1319: Decouple Request Payload from RPC Methods Definition: Decouple Request Payload from RPC Methods Definition
• SEP-1330: Elicitation Enum Schema Improvements and Standards Compliance: Elicitation Enum Schema Improvements and Standards Compliance
• SEP-1577: Sampling With Tools: Sampling With Tools
• SEP-1613: Establish JSON Schema 2020-12 as Default Dialect for MCP: Establish JSON Schema 2020-12 as Default Dialect for MCP
• SEP-1686: Tasks: Tasks
• SEP-1699: Support SSE polling via server-side disconnect: Support SSE polling via server-side disconnect
• SEP-1730: SDKs Tiering System: SDKs Tiering System
• SEP-1850: PR-Based SEP Workflow: PR-Based SEP Workflow
• SEP-1865: MCP Apps - Interactive User Interfaces for MCP: MCP Apps - Interactive User Interfaces for MCP
• SEP-2085: Governance Succession and Amendment Procedures: Governance Succession and Amendment Procedures
• SEP-2106: Tools inputSchema & outputSchema Conform to JSON Schema 2020-12: Tools inputSchema & outputSchema Conform to JSON Schema 2020-12
• SEP-2133: Extensions: Extensions
• SEP-2148: MCP Contributor Ladder: MCP Contributor Ladder
• SEP-2149: MCP Group Governance and Charter Template: MCP Group Governance and Charter Template
• SEP-2164: Standardize Resource Not Found Error Code: Standardize Resource Not Found Error Code
• SEP-2207: OIDC-Flavored Refresh Token Guidance: OIDC-Flavored Refresh Token Guidance
• SEP-2243: HTTP Header Standardization for Streamable HTTP Transport: HTTP Header Standardization for Streamable HTTP Transport
• SEP-2260: Require Server requests to be associated with a Client request.: Require Server requests to be associated with a Client request.
• SEP-2322: Multi Round-Trip Requests: Multi Round-Trip Requests
• SEP-2468: Recommend Issuer (iss) Parameter in MCP Auth Responses: Recommend Issuer (iss) Parameter in MCP Auth Responses
• SEP-2484: Require Conformance Tests for Standards Track SEPs to Reach Final Status: Require Conformance Tests for Standards Track SEPs to Reach Final Status
• SEP-2549: TTL for List Results: TTL for List Results
• SEP-2567: Sessionless MCP via Explicit State Handles: Sessionless MCP via Explicit State Handles
• SEP-2575: Make MCP Stateless: Make MCP Stateless
• SEP-2577: Deprecate Roots, Sampling, and Logging: Deprecate Roots, Sampling, and Logging
• SEP-2596: Specification Feature Lifecycle and Deprecation Policy: Specification Feature Lifecycle and Deprecation Policy
• SEP-2663: Tasks Extension: Tasks Extension
• SEP-414: Document OpenTelemetry Trace Context Propagation Conventions: Document OpenTelemetry Trace Context Propagation Conventions
• SEP-932: Model Context Protocol Governance: Model Context Protocol Governance
• SEP-973: Expose additional metadata for Implementations, Resources, Tools and Prompts: Expose additional metadata for Implementations, Resources, Tools and Prompts
• SEP-985: Align OAuth 2.0 Protected Resource Metadata with RFC 9728: Align OAuth 2.0 Protected Resource Metadata with RFC 9728
• SEP-986: Specify Format for Tool Names: Specify Format for Tool Names
• SEP-990: Enable enterprise IdP policy controls during MCP OAuth flows: Enable enterprise IdP policy controls during MCP OAuth flows
• SEP-991: Enable URL-based Client Registration using OAuth Client ID Metadata Documents: Enable URL-based Client Registration using OAuth Client ID Metadata Documents
• SEP-994: Shared Communication Practices/Guidelines: Shared Communication Practices/Guidelines
• Specification Enhancement Proposals (SEPs): Index of all MCP Specification Enhancement Proposals
• Architecture
• Authorization
• Overview
• Lifecycle
• Transports
• Cancellation
• Ping
• Progress
• Tasks
• Key Changes
• Elicitation
• Roots
• Sampling
• Specification
• Schema Reference
• Overview
• Prompts
• Resources
• Tools
• Completion
• Logging
• Pagination