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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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mcp serve

cli never mined JSON

A Claude Code CLI flag, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

Programs connected through claude mcp serve can now see and use your subagent types through the Agent tool

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.288.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 149on this box, as of v2.1.308
Written about v2.1.288 first named in a changelog, 2 Oct 2026

In the changelogs

9

Releases whose published page names mcp serve.

  1. v2.1.304
    Choose which plugins load when Claude Code runs as an MCP server

    CLAUDE_CODE_MCP_SERVE_ENABLED_PLUGINS lets a program that launches claude mcp serve pick which plugins are turned on

    named in this entry

  2. v2.1.302
    claude mcp serve can be limited to a subfolder with a one-time variable

    Programs that launch claude mcp serve can set CLAUDE_CODE_MCP_SERVE_WORKSPACE_ROOT so that only folders below a given folder can be registered

    named in this entry

  3. v2.1.302
    claude mcp serve can report on tool calls and accept rules from the client

    claude mcp serve gains a ReadCalls tool that reports on running and finished tool calls, and clients can pass in deny and ask rules

    named in this entry

  4. v2.1.299
    claude mcp serve reads a session id sent with each tool call

    When Claude Code runs as an MCP server, it reads a session id from each call's anthropic/session metadata and warns when it is invalid

    named in this entry

  5. v2.1.295
    claude mcp serve gains an HTTP mode, limited to remote cloud sessions

    In remote cloud sessions only, claude mcp serve can now listen over HTTP with --transport, --port and --session-tunnel

    named in this entry

  6. v2.1.295
    mcp serve gains a session tunnel mode and can return tool output

    claude mcp serve has a new --session-tunnel mode that connects through a relay, and can return tool output and relay permission asks

    named in this entry

  7. v2.1.295
    claude mcp serve declares extra capabilities in its remote mode

    Run in its remote mode, the MCP server started by claude mcp serve now declares more capabilities and accepts session details with each tool call

    named in this entry

  8. v2.1.288
    claude mcp serve now offers your custom subagents

    Programs connected through claude mcp serve can now see and use your subagent types through the Agent tool

    named in this entry

  9. v2.1.288
    claude mcp serve now takes --strict-mcp-config into account

    Running claude mcp serve now passes the --strict-mcp-config option along before the server starts

    named in this entry

First cited

0

No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.

Presence across releases

0

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the CLI flag does. All CLI flags.

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