mcp add
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.
After adding or removing a user or local MCP server, Claude Code rereads its config file and fails with an error if the change did not stick
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.283.
In the changelogs
2Releases whose published page names mcp add.
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v2.1.284
claude mcp addis refused when managed settings allow only plugin MCP serversIf managed settings restrict MCP servers to plugins,
claude mcp addnow stops with an error instead of adding a server that never loadsnamed in this entry
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v2.1.283
claude mcp addandclaude mcp removenow check that the change was savedAfter adding or removing a user or local MCP server, Claude Code rereads its config file and fails with an error if the change did not stick
named in this entry
First cited
0No 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
0The 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.