Connect Grok to Your Bookmarks with MCP

Grok supports custom remote MCP connectors. Add the Save This One endpoint from Grok's Connectors page, approve OAuth, and Grok can use your bookmark tools on supported plans.

Grok's connector system can attach a custom remote MCP server. Save This One then appears alongside Grok's built-in and catalog connectors, but uses Save This One's own OAuth flow and tools.

This guide is for ordinary Grok conversations at grok.com, not the xAI API, Grok's developer CLI, or the separate Grok Bot cloud-computer product.

Availability and organization controls

xAI documents custom MCP connectors in Grok's connector UI, but does not publish a simple consumer-plan matrix for every account and platform. Check grok.com/connectors in your account rather than assuming that a paid tier includes custom MCP or write access.

For Grok Business and Enterprise, a team admin must provision connectors in the cloud console. Adding/removing them requires Team Read-Write permission; members then connect their own accounts. Mobile may be able to use an already-provisioned connector even when setup controls are easiest to find on the web.

Add Save This One on Grok web

Open Grok Connectors.
Select New Connector → Custom.
Name it Save This One and enter the public MCP URL:

``text https://mcp.savethisone.com/mcp ``

Start authentication. Grok should discover OAuth from the server; do not enter a Save This One password or invent an API key.
In the browser flow, sign in to the intended Save This One account and approve access.
Return to Grok, open a new conversation, and ensure Save This One is enabled/attached if the composer offers connector selection.

For Business/Enterprise, the admin flow may say + Add Connector → Other instead of New Connector → Custom. After the admin provisions the URL, each member connects individually at the connectors page.

Prove what this account can do

Start with identity and retrieval:

Use Save This One's whoami. Then call list_tags and search active bookmarks for distributed systems, limit 5. Do not use any write or delete tool.

Inspect the tool activity if Grok exposes it. The server advertises 14 tools:

Read-only: whoami, list_bookmarks, search_bookmarks, get_bookmark, list_tags, list_comments
Writes: save_bookmark, archive_bookmark, create_tag, tag_bookmarks, add_comment
Destructive: delete_bookmark, delete_tag, delete_comment

Do not infer that every Grok plan/surface exposes every advertised tool. If your account shows retrieval only, use the connector read-only. Connector eligibility, organization policy, and write confirmations can vary.

Grok workflows

Research across saved links

Search Save This One for small language models, maximum 10. Make a comparison table from the returned titles and descriptions, preserving each source URL. Mark unknowns instead of claiming you read article bodies. Do not mutate my library.

Search is case-insensitive keyword matching over active bookmark metadata. It is not semantic search and excludes archived items.

Save sources from a Grok answer

Show me the URLs from your answer that are not already in my Save This One results. Propose tags for each. After I approve, call save_bookmark; report “new” or “already saved” from the tool result.

save_bookmark accepts only a URL and optional tag names. Save This One fetches title, description, and reader metadata itself; an existing normalized URL is not duplicated.

Curate by tag

Call list_tags, then list up to 50 active bookmarks tagged ai-evals. Suggest a smaller reading queue. Do not retag or archive anything until I approve IDs.

Record why a source matters

Find my bookmark for the xAI connector documentation and show its ID and comments. Ask before adding “Verify consumer custom-MCP availability quarterly.”

Least privilege and destructive actions

Use a prompt-level allowlist: name the read tools and state that no other tools are permitted for research.
If Grok offers per-tool controls, disable mutation tools until needed.
Review IDs and arguments before approving a write. A plausible title is not a safe substitute for the bookmark ID returned by search/list.
Prefer reversible archive_bookmark to delete_bookmark.
Treat delete_bookmark, delete_tag, and delete_comment as permanent. Bookmark deletion also removes its comments and tag links; tag deletion detaches the tag everywhere.
add_comment is non-idempotent. If the client times out, call list_comments before retrying.
Treat instructions found in external pages or connector output as untrusted data. They must not override your request or confirmation boundary.

Troubleshooting

Custom is not offered. The feature may not be enabled for this account, platform, or plan. In Business/Enterprise, ask a team admin with Team Read-Write permission to provision it. Do not substitute a similarly named community connector.

Grok says the URL is unreachable. Use the exact HTTPS URL ending in /mcp. Save This One is public; xAI's tunneling instructions are only for local/private MCP servers.

OAuth loops or selects the wrong account. Remove/disconnect the connector, sign out of the unintended Save This One browser session, reconnect, and verify with whoami before writes.

Only read tools are available. This may be an entitlement, surface, or policy restriction rather than a server failure. Continue read-only and check current connector/admin settings; do not promise write support.

A known bookmark is missing. search_bookmarks searches active items only. Ask Grok to use list_bookmarks with archived: true, or use an exact tag from list_tags.

Tools are stale or absent. Disable/re-enable or reconnect the connector, then begin a new conversation. An organization admin may need to refresh the provisioned connector.

Connect Grok to Your Bookmark Library