Connect Claude Code to tools via MCP changedmcp
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1072Claude Code marks a connector `managed` in `/mcp` and in the [`/plugin`](/docs/en/plugins) manager when your organization manages its authentication in claude.ai. Managed status doesn't change how Claude Code connects to the connector or applies your organization's [tool controls](#organization-controls-on-connector-tools).
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10721074Connectors you have never signed in to are collapsed behind a `Show unused connectors` row at the end of the claude.ai section, so an organization-provisioned list doesn't fill the panel. Select the row to expand them. A connector you signed in to before stays visible even when it currently needs re-authentication.
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10741076Connectors from claude.ai are fetched only when your active [authentication method](/docs/en/authentication#authentication-precedence) is a claude.ai subscription login. They aren't loaded, even if you previously ran `/login`, when:
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12961298* **Form mode**: Claude Code shows a dialog with form fields defined by the server (for example, a username and password prompt). Fill in the fields and submit.
12971299* **URL mode**: Claude Code opens a browser URL for authentication or approval. Complete the flow in the browser, then confirm in the CLI.
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1301In URL mode, Claude Code passes the URL as a command-line argument to your system's URL handler, and caps how long that argument can be. When the URL, once escaped for the command line, is over that cap, you can only decline the request. Every character that needs escaping, such as `%` or `&`, counts four times toward the cap: its own character plus three escape characters. A URL with none of them reaches the cap at about 8,000 characters. A URL built largely of percent-escapes, where every third character is a `%`, reaches it at roughly 4,000.
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12991303To auto-respond to elicitation requests without showing a dialog, use the [`Elicitation` hook](/docs/en/hooks#elicitation).
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