| SEP-3392 |
Extension Lifecycle |
Draft |
Process |
2026-09-25 |
| SEP-3371 |
Consistent SDK Extension Points |
Draft |
Standards Track |
2026-09-18 |
| SEP-3313 |
Structured Tool-Failure Classification (`ToolFailure`) |
Draft |
Standards Track |
2026-08-27 |
| SEP-3279 |
Negotiated tool result variants |
Draft |
Standards Track |
2026-08-18 |
| SEP-3149 |
Require `token_endpoint_auth_methods_supported` in Client ID Metadata Documents |
Draft |
Standards Track |
2026-07-27 |
| SEP-3118 |
App-Rendered Elicitations for MCP Apps |
Accepted |
Extensions Track |
2026-07-22 |
| SEP-3094 |
Granular citations format |
Draft |
Standards Track |
2026-07-15 |
| SEP-3004 |
Tamper-Evident Audit Record Contract |
Accepted |
Standards Track |
2026-06-02 |
| SEP-2848 |
Asynchronous Approval for Tool Calls |
Draft |
Extensions Track |
2026-06-02 |
| SEP-2817 |
AI Invocation Audit Context in Request `_meta` |
Draft |
Standards Track |
2026-05-30 |
| SEP-2809 |
Attested Tool-Server Admission (ATSA) |
Final |
Standards Track |
2026-05-22 |
| SEP-2793 |
Tool Risk Metadata |
Draft |
Standards Track |
2026-05-27 |
| SEP-2792 |
Per-Request User Language Preference |
Draft |
Standards Track |
2026-05-26 |
| SEP-2752 |
HTTP Message Signing for MCP Client Authentication |
Draft |
Extensions Track |
2026-05-19 |
| SEP-2694 |
Resumable Task Event Streams |
Draft |
Extensions Track |
2026-05-06 |
| SEP-2692 |
stdio Server Process Lifetime |
Draft |
Informational |
2026-05-06 |
| SEP-2663 |
Tasks Extension |
Final |
Extensions Track |
2026-04-27 |
| SEP-2643 |
Structured Authorization Denials |
Draft |
Extensions Track |
2026-04-20 |
| SEP-2640 |
Skills Extension |
Final |
Extensions Track |
2026-04-23 |
| SEP-2633 |
Standard Client-Side Configuration Format - mcp.json |
Draft |
Standards Track |
2026-04-21 |
| SEP-2632 |
Structured Content for Progress Notifications |
Draft |
Standards Track |
2026-04-22 |
| SEP-2631 |
File Objects and Transfer |
Draft |
Standards Track |
2026-04-20 |
| SEP-2624 |
Interceptors for Model Context Protocol |
Draft |
Standards Track |
2025-11-04 |
| SEP-2598 |
Pluggable Transports |
Draft |
Standards Track |
2026-04-17 |
| SEP-2596 |
Specification Feature Lifecycle and Deprecation Policy |
Final |
Process |
2026-04-17 |
| SEP-2577 |
Deprecate Roots, Sampling, and Logging |
Final |
Standards Track |
2026-04-14 |
| SEP-2575 |
Make MCP Stateless |
Final |
Standards Track |
2025-06-18 |
| SEP-2567 |
Sessionless MCP via Explicit State Handles |
Final |
Standards Track |
2026-03-11 |
| SEP-2549 |
TTL for List Results |
Final |
Standards Track |
2026-04-09 |
| SEP-2532 |
Resource Streaming for Binary Content Delivery |
Draft |
Standards Track |
2026-04-07 |
| SEP-2495 |
Event-Driven Tool Invocation (Server-Push to LLM Re-entry) |
Draft |
Standards Track |
2026-03-29 |
| SEP-2484 |
Require Conformance Tests for Standards Track SEPs to Reach Final Status |
Final |
Process |
2026-03-27 |
| SEP-2468 |
Recommend Issuer (iss) Parameter in MCP Auth Responses |
Final |
Standards Track |
2026-03-25 |
| SEP-2419 |
Standardize `cache_hint` as a Well-Known Key in `CallToolResult._meta` |
Accepted |
Standards Track |
2026-03-18 |
| SEP-2322 |
Multi Round-Trip Requests |
Final |
Standards Track |
2026-02-03 |
| SEP-2293 |
Enhanced Completion Values with Rich Metadata Support |
Draft |
Standards Track |
2025-09-08 |
| SEP-2260 |
Require Server requests to be associated with a Client request. |
Final |
Standards Track |
2026-02-16 |
| SEP-2243 |
HTTP Header Standardization for Streamable HTTP Transport |
Final |
Standards Track |
2026-02-04 |
| SEP-2207 |
OIDC-Flavored Refresh Token Guidance |
Final |
Standards Track |
2026-02-04 |
| SEP-2164 |
Standardize Resource Not Found Error Code |
Final |
Standards Track |
2026-01-28 |
| SEP-2149 |
MCP Group Governance and Charter Template |
Final |
Process |
2025-01-15 |
| SEP-2148 |
MCP Contributor Ladder |
Final |
Process |
2026-01-15 |
| SEP-2145 |
Standardize `tools/call` Failure Reporting |
Accepted |
Standards Track |
2026-01-23 |
| SEP-2133 |
Extensions |
Final |
Standards Track |
2025-01-21 |
| SEP-2127 |
MCP Server Cards - HTTP Server Discovery |
Accepted |
Extensions Track |
2026-01-21 |
| SEP-2106 |
Tools `inputSchema` & `outputSchema` Conform to JSON Schema 2020-12 |
Final |
Standards Track |
2026-01-06 |
| SEP-2085 |
Governance Succession and Amendment Procedures |
Final |
Process |
2025-12-05 |
| SEP-2028 |
Automatic \_meta to HTTP Header Forwarding for Distributed Tracing |
Draft |
Standards Track |
2025-12-29 |
| SEP-1933 |
Workload Identity Federation |
Draft |
Standards Track |
2025-12-05 |
| SEP-1932 |
DPoP Profile for MCP |
Draft |
Standards Track |
2025-12-05 |
| SEP-1913 |
Trust and Sensitivity Annotations |
Draft |
Standards Track |
2025-06-11 |
| SEP-1865 |
MCP Apps - Interactive User Interfaces for MCP |
Final |
Extensions Track |
2025-11-21 |
| SEP-1850 |
PR-Based SEP Workflow |
Final |
Process |
2025-11-20 |
| SEP-1730 |
SDKs Tiering System |
Final |
Standards Track |
2025-10-29 |
| SEP-1699 |
Support SSE polling via server-side disconnect |
Final |
Standards Track |
2025-10-22 |
| SEP-1686 |
Tasks |
Final |
Standards Track |
2025-10-20 |
| SEP-1613 |
Establish JSON Schema 2020-12 as Default Dialect for MCP |
Final |
Standards Track |
2025-10-06 |
| SEP-1577 |
Sampling With Tools |
Final |
Standards Track |
2025-09-30 |
| SEP-1330 |
Elicitation Enum Schema Improvements and Standards Compliance |
Final |
Standards Track |
2025-08-11 |
| SEP-1319 |
Decouple Request Payload from RPC Methods Definition |
Final |
Standards Track |
2025-08-08 |
| SEP-1303 |
Input Validation Errors as Tool Execution Errors |
Final |
Standards Track |
2025-08-05 |
| SEP-1302 |
Formalize Working Groups and Interest Groups in MCP Governance |
Final |
Standards Track |
2025-08-05 |
| SEP-1046 |
Support OAuth client credentials flow in authorization |
Final |
Standards Track |
2025-07-23 |
| SEP-1036 |
URL Mode Elicitation for secure out-of-band interactions |
Final |
Standards Track |
2025-07-22 |
| SEP-1034 |
Support default values for all primitive types in elicitation schemas |
Final |
Standards Track |
2025-07-22 |
| SEP-1024 |
MCP Client Security Requirements for Local Server Installation |
Final |
Standards Track |
2025-07-22 |
| SEP-994 |
Shared Communication Practices/Guidelines |
Final |
Process |
2025-07-17 |
| SEP-991 |
Enable URL-based Client Registration using OAuth Client ID Metadata Documents |
Final |
Standards Track |
2025-07-07 |
| SEP-990 |
Enable enterprise IdP policy controls during MCP OAuth flows |
Final |
Standards Track |
2025-06-04 |
| SEP-986 |
Specify Format for Tool Names |
Final |
Standards Track |
2025-07-16 |
| SEP-985 |
Align OAuth 2.0 Protected Resource Metadata with RFC 9728 |
Final |
Standards Track |
2025-07-16 |
| SEP-973 |
Expose additional metadata for Implementations, Resources, Tools and Prompts |
Final |
Standards Track |
2025-07-15 |
| SEP-932 |
Model Context Protocol Governance |
Final |
Process |
2025-07-08 |
| SEP-414 |
Document OpenTelemetry Trace Context Propagation Conventions |
Final |
Standards Track |
2025-04-25 |
