Robly MCP by usefulapi MCP Server

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answering

Robly MCP by usefulapi is answering right now. Last checked 5 min ago. It exposes 13 tools. Last commit 25 Oct 2026.

Find Robly contacts and lists; subscribe, update and move contacts between lists.

Uptime history 27 hours of history

27 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

331 ms

Response time

average over 24h

Stars

last commit 25 Oct 2026

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 25 October 2026. No other catalogue keeps this.

25 Oct a tool changed version4 times that day

and 3 more, back to 25 October 2026

Nothing serious here today

Today is the operative word: we check Robly MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add robly --transport http https://robly.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://robly.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.robly]
url = "https://robly.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "robly": {
      "url": "https://robly.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "robly": {
      "type": "http",
      "url": "https://robly.usefulapi.io/mcp"
    }
  }
}

Available tools 13

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

robly

robly_add_contact_to_list

WRITE: put an existing contact on a list. With include_autoresponder Robly triggers autoresponders matching the newly listed contact, which EMAIL the contact. POST /api/v1/contacts/add_sub_list.

robly_check_list_membership

Whether one contact (by email or member id) is on one list. GET /api/v1/contacts/exists_in_sub_list.

robly_create_sub_list

WRITE: create a new, empty sub list. Robly does not say whether a list with the same name already exists, so check robly_list_sub_lists first. POST /api/v1/sub_lists/add_sub_list.

robly_find_contact

Look up one contact by email address or member id: status, subscription date, sign-up source and, on request, the lists and data fields. Returns found: false when Robly has no such contact. GET /api/v1/contacts/search.

robly_get_signup_form

The data fields and sub lists a new subscriber can be given through the sign-up API (public ones unless include_all is true). GET /api/v1/sign_up/show.

robly_list_contacts

List contacts (members) of the Robly account, newest first as Robly orders them: id, email, subscribed/deleted flags, subscription date, sign-up source, timestamps. Filter by status, by list, or by last-updated time; optionally include each contact's lists and data fields. Pages with limit (max 100) and offset: pass next_offset from the previous reply. Robly does not return a total. GET /api/v1/contacts/show.

robly_list_fields

List the contact data fields (First Name, Last Name, custom fields): id, label, type, required flag and the user_tag that robly_subscribe_contact and robly_update_contact use as the field key. GET /api/v1/fields/show.

robly_list_sub_lists

List the account's sub lists (the lists contacts belong to): id, name, position, timestamps. Public lists only unless include_all is true. Use the ids for list filters and for adding contacts. GET /api/v1/sub_lists/show.

robly_remove_contact_from_list

WRITE: take a contact off one list (the contact itself is kept). POST /api/v1/contacts/remove_sub_list.

robly_rename_sub_list

WRITE: rename a sub list. POST /api/v1/sub_lists/rename_sub_list.

robly_subscribe_contact

WRITE: add a new subscribed contact (or re-submit an existing one through the sign-up form). With double_opt_in Robly EMAILS the contact a confirmation link first; with welcome_email it EMAILS the welcome message right away; with include_autoresponder it triggers matching autoresponders, which email the contact. Only subscribe people who agreed to receive email. Field values go in `fields`, keyed by the user_tag from robly_list_fields (for example fname, lname). POST /api/v1/sign_up/generate.

robly_unsubscribe_contact

WRITE: unsubscribe a contact so Robly stops emailing it. Robly's API cannot undo this: an unsubscribed contact can only come back through a sign-up form. Use it for a contact that asked to stop. POST /api/v1/contacts/unsubscribe.

robly_update_contact

WRITE: change an existing contact's data fields and/or list memberships in one call. Name the contact by member_id (look it up with robly_find_contact). `fields` are keyed by user_tag (robly_list_fields); the email address cannot be changed here. add_to_list_ids puts the contact on those lists, remove_from_list_ids takes it off them. remove_from_all_other_lists also removes the contact from every list NOT named in add_to_list_ids (requires add_to_list_ids). include_autoresponder triggers autoresponders that EMAIL the contact. POST /api/v1/contacts/update_full_contact.

Endpoints

URL	Transport	State	Latency	Checked
https://robly.usefulapi.io/mcp	streamable-http	answering	177 ms	5 min ago

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Robly MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Robly MCP by usefulapi do?

It exposes 13 tools, read directly from the server on our last check. Among them: robly_add_contact_to_list, robly_check_list_membership, robly_create_sub_list, robly_find_contact, robly_get_signup_form, robly_list_contacts and 7 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Robly MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 331 ms. The bar chart above shows every period we have measured.

How do I connect Robly MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Robly MCP by usefulapi need an API key?

No. Robly MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 13 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Robly MCP by usefulapi?

It answers our handshake in 331 ms on average, which is faster than 49% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Robly MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at robly.usefulapi.io, which runs on its operator's own terms.