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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.315 ·

Remote sessions explain that --mcp-config, agent MCP servers and --chrome are ignored

In remote sessions, a warning now says MCP servers from --mcp-config or agent frontmatter are ignored and that --chrome has no effect

Group of 2 You'll notice Improvements
JSON All of v2.1.315
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SessionsArea: what it touches
ImprovementsKind: in v2.1.315,
ImprovementsSection of the release

Unclear The new wording of the warning and exactly which servers it now lists are not known.

What

MCP servers are add-ons that give Claude extra tools. In a remote session, Claude Code works in a workspace on another machine. MCP runs in that remote workspace, so servers you set up on your own machine are not used. The warning about this changed:

  • It says that servers from --mcp-config or from agent frontmatter are ignored because "MCP runs in the remote workspace". Agent frontmatter is the settings block at the top of an agent file.
  • It also warns that --chrome, the option for Chrome browser integration, has no effect in that case.
  • One helper now builds the warning from mcpConfigFlagServers, the agent, the chrome flag and dynamicMcpConfig. Before, the warning was built inline for every dynamic MCP server and only mentioned --mcp-config and agent frontmatter.

Why

If you pass --mcp-config or --chrome to a remote session, you now get a warning that these options do nothing there. The wording of the warning, and which servers it lists, may differ from before.

Read from
Names in the bundle--mcp-config
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Added since A small documentation edit on Best practices for Claude Code touched a line naming --mcp-config after this was published. * `--append-system-prompt`, `--mcp-config`, and `--settings` explicitly pass in what the run *does* need. Hooks you pass with `--settings` [don't run under `--bare`](https://code.claude.com/docs/en/headless#start-faster-with-bare-mode), so… best-practices see the edit
Confirmed since Anthropic's documentation has since written up --mcp-config, on Error reference. * **A file you passed to `--agents` or `--mcp-config`**: edit it yourself errors see the edit
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe new wording of the warning and exactly which servers it now lists are not known.
Anthropic's documentation agreesAnthropic's documentation has since written up --mcp-config, on Error reference.

See this entry in the whole of v2.1.315 →

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