Release / 27 Jan 2026

Model Context Protocol servers 2026.1.26

Exercise background MCP tasks with status tracking and deferred results.

All of Model Context Protocol servers

Before you upgrade to 2026.1.26

1 to fix

Read results omit storage-only `type` discriminators and expose only documented entity and relation fields.

Behavior changedStore, search, and update entities, observations, and relationships across chats.Inferred

Read the evidence

modelcontextprotocol/servers/blob/2026.1.26/src/memory/index.ts

Install MCP Python SDK `mcp>=1.23.0` for this Time release.

Action requiredLook up the current time and convert times between IANA timezones.Affects: Time users with manually pinned Python dependencies.Inferred

Read the evidence

modelcontextprotocol/servers/blob/2026.1.26/src/time/pyproject.toml

What changed in 2026.1.26

Everything adds a simulated research task plus asynchronous sampling and elicitation demonstrations. Time returns an invalid-parameters error for unknown timezones.

Available in repository tag 2026.1.26; configure the relevant server in an MCP client. Package versions vary by server.

Fixed and improved

Use `simulate-research-query` and asynchronous sampling/elicitation tools to test task status and results; bidirectional tasks require matching client capabilities.

ImprovedExercise MCP client support for tools, prompts, resources, sampling, and progress notifications.

Read the evidence

modelcontextprotocol/servers/blob/2026.1.26/src/everything/docs/features.md

Invalid timezone names produce a structured `INVALID_PARAMS` error instead of failing to construct the error.

Now worksLook up the current time and convert times between IANA timezones.Inferred

Read the evidence

modelcontextprotocol/servers/blob/2026.1.26/src/time/src/mcp_server_time/server.py

Seeded by @iluxav with Codex, from the release's public sources. Each change links to its evidence.