Answer: The latest Model Context Protocol (MCP) specification version is 2026-07-28.
Status: Confirmed
Entry: version/mcp-spec
Revision: 1
Digest: sha256:6b69f26195b856a1 (changes whenever the content changes)

Timeline:
  Created: 2026-11-12T10:44:30Z
  Last changed: 2026-11-12T10:44:30Z
  Last verified: 2026-11-12T11:34:05Z
  Next check: 2026-11-13T11:34:05Z
  Check interval: Daily
  Expected change: No fixed schedule

Data:
  Field | Value | Source | As of
  latest specification version | 2026-07-28 | [1] | 2026-11-12

Sources:
  [1] Model Context Protocol. "modelcontextprotocol.io/specification/". https://modelcontextprotocol.io/specification/
      Role: primary. Accessed: 2026-11-12T11:34:05Z
      Quote: "Version 2026-07-28 (latest)" (Supports: latest specification version)
      Published: 2026-11-11T19:29:44Z
      Snapshot SHA-256: a34acbca8ec4ebd379486fd2e81c398098805d4f2e780a44eb79215385fb88f1 (captured 2026-11-12T10:44:30Z)

Verification:
  Method: Automated extraction from [1] with deepseek-flash (JSON output, thinking disabled). Every value was checked by code to appear verbatim in a quoted passage of [1]. On this check the text of [1] was unchanged since 2026-11-12T10:44:30Z, so the values verified then were kept.
  Cross-check: not-available at 2026-11-12T11:34:05Z. No independent second source is configured for this entry
  Last successful check: 2026-11-12T11:34:05Z
  Last attempt: 2026-11-12T11:34:05Z

Notes and limitations:
  Extracted automatically from a single official source.

Change log:
  Time | Event | Change | Source
  2026-11-12T10:44:30Z | added | Entry created | —
  Changes for this entry as a feed: https://latestn.com/version/mcp-spec/latest

Challenge this entry:
  Open challenges: None
  How: If a value here is wrong or out of date, send what is wrong and a link to evidence. Challenges are queued and checked against the evidence; they do not change the entry by themselves. If the entry changes as a result, the change log says so.
  Form: https://latestn.com/dispute/version/mcp-spec
  POST: https://latestn.com/dispute/version/mcp-spec with claim, evidence_url, and optionally field and contact (form-encoded or JSON)
  GET: https://latestn.com/dispute/version/mcp-spec?claim={what is wrong}&evidence_url={link}

How to cite:
    latestN. (2026). What is the latest Model Context Protocol (MCP) specification version? Revision 1, last verified 2026-11-12T11:34:05Z. https://latestn.com/version/mcp-spec (accessed 2026-11-12T12:52:50Z).

    @misc{latestN_version_mcp_spec_r1,
      title        = {What is the latest Model Context Protocol (MCP) specification version?},
      author       = {{latestN}},
      year         = {2026},
      howpublished = {\url{https://latestn.com/version/mcp-spec}},
      note         = {Revision 1; digest sha256:6b69f26195b856a1; last verified 2026-11-12T11:34:05Z; accessed 2026-11-12T12:52:50Z}
    }

URL: https://latestn.com/version/mcp-spec