Grabblist
warningsmcp.grabbitapp.com
Save and organize web finds in persistent, user-controlled collections for AI assistants.
https://mcp.grabbitapp.com/api/mcpWebsiteOAuthMCP 2025-03-26v2.1.0last checked 24 Aug 2026spoke MCP on 3 of 3 checks (30 days)initialize in 805 msHow to authenticate
Checked against the endpoint by our probe on 24 Aug 2026. These are the capabilities the server advertises, not a prediction about any particular client.
| Scheme | OAuth |
|---|---|
| Issuer | https://grabbitapp.com |
| Dynamic client registration | ✓Advertised (RFC 7591) |
| Client ID Metadata Document | ✕Not advertised |
| PKCE | ✓S256 |
| Grant types | authorization_code, refresh_token |
| Scopes | grabblist:read, grabblist:write |
| Protected-resource metadata | ✓Published (RFC 9728) |
| Anonymous access | Handshake succeeds; 23 tools listable |
| Credentials demanded in prose | ✕ask_agent These tools are listed anonymously and their own descriptions ask for an account or key, but no challenge is issued — so a client has nothing to act on and the refusal arrives as a tool error. |
What the probe found
1 of the 23 tools listed anonymously say in their own descriptions that they need an account or a key (ask_agent), but the endpoint issued no WWW-Authenticate challenge. The requirement is stated only in prose, so a call reaches the tool and comes back as a tool error instead of an authorization step.
A cross-origin preflight came back without Access-Control-Allow-Origin, so the endpoint is reachable from native clients only — code running in a web page is stopped by the browser before a request is ever sent.
The server exposes a public surface before authorization: ping, get_wishlist, get_item, add_item, delete_item, restore_item, search_saved, update_price, update_item, list_collections, create_collection, add_to_collection, remove_from_collection, delete_collection, update_collection, link_items, get_item_graph, unlink_items, get_item_history, get_collection_activity, set_pinned_items, send_feedback, ask_agent.
Tools
Contract history
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Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.
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