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Implement SEP-2567 Sessionless MCP via Explicit State Handles

Status: Open.

Task

#951 In modelcontextprotocol/go-sdk;

· maciej-kisiel opened on May 8, 2026

·  

2026-06-30

Set list of supported versions

Status: Open.

Enhancement

#945 In modelcontextprotocol/go-sdk;

· zmay2030 opened on May 6, 2026

Implement SEP-2350: Clarify client-side scope accumulation in step-up authorization

Status: Open.

Task

#943 In modelcontextprotocol/go-sdk;

· guglielmo-san opened on May 6, 2026

·  

2026-06-30

Implement SEP-2468: Recommend Issuer (iss) Parameter in MCP Auth Responses

Status: Open.

Task

#941 In modelcontextprotocol/go-sdk;

· maciej-kisiel opened on May 6, 2026

·  

2026-06-30

Remove support for batching on streamable connection

Status: Open.

Task

#911 In modelcontextprotocol/go-sdk;

· guglielmo-san opened on Apr 27, 2026

Implement SEP-2243 HTTP Standardization

Status: Open.

Task

#905 In modelcontextprotocol/go-sdk;

· guglielmo-san opened on Apr 23, 2026

·  

2026-06-30

Proposal: Client API support for saving and restoring OAuth2 sessions

needs investigationStatus unclear, requires more work and discussionStatus unclear, requires more work and discussion

Status: Open.

Enhancement

#901 In modelcontextprotocol/go-sdk;

· smlx opened on Apr 21, 2026

Allow configuring additionalProperties on generated tool schemas

blockedBlocked on external dependencyBlocked on external dependency

Status: Open.

Enhancement

#892 In modelcontextprotocol/go-sdk;

· bokelley opened on Apr 10, 2026

Support hooking token refresh

needs community feedbackMore input from users needed to inform a decisionMore input from users needed to inform a decision

needs confirmationUnclear if still relevantUnclear if still relevant

Status: Open.

Enhancement

#881 In modelcontextprotocol/go-sdk;

· smlx opened on Apr 6, 2026

Potential race condition in (*mcp.ClientSession).Close()

needs investigationStatus unclear, requires more work and discussionStatus unclear, requires more work and discussion

P2Moderate issues, valuable feature requestsModerate issues, valuable feature requests

Status: Open.

Bug

#855 In modelcontextprotocol/go-sdk;

· madelinekalil opened on Mar 24, 2026

Support Schema Cycles

blockedBlocked on external dependencyBlocked on external dependency

Status: Open.

Enhancement

#749 In modelcontextprotocol/go-sdk;

· RPGillespie6 opened on Jan 12, 2026

Expose generic SendNotification on ServerSession for custom protocol extensions

needs investigationStatus unclear, requires more work and discussionStatus unclear, requires more work and discussion

Status: Open.

Enhancement

#745 In modelcontextprotocol/go-sdk;

· vaijab opened on Jan 6, 2026