UnderChat MCP by usefulapi MCP Server

by usefulapi Your server? Claim it

answering

UnderChat MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 21 tools. Last commit 12 Nov 2026.

List WhatsApp chats, contacts and sectors; send, transfer and label chats in UnderChat.

Uptime history 24 hours of history

24 hours agonow

100.0%

Uptime 24h

89 of 89 checks

Tools

read from the server

264 ms

Response time

average over 24h

Stars

last commit 12 Nov 2026

Nothing serious here today

Today is the operative word: we check UnderChat 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 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

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

https://underchat.usefulapi.io/mcp

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 21

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

underchat

underchat_create_contact

Create a chat contact with a name and a phone number. POST /chat/contacts.

underchat_find_contact_by_phone

Find the chat contact that has a phone number. GET /chat/contacts/by-phone.

underchat_get_chat_details

Get one chat with its state, assigned channel, user, sector and labels. GET /chat/{chat_id}/details.

underchat_get_chat_messages

Read the message history of one chat, newest first, with paging. GET /chat/{chat_id}.

underchat_get_contact

Get one chat contact by id. GET /chat/contacts/{contact_id}.

underchat_get_unread_summary

Count the unread messages for the executor. GET /chat/unread-summary.

underchat_get_user

Get one user of the account by id, with the status and access group. GET /user/{user_id}.

underchat_list_channels

List the account's channels (for example WhatsApp numbers) with their status. Use the ids as channel or worker ids in other tools. GET /chat/channels-status.

underchat_list_chats

List conversations in one state (my_chats = the executor's own chats; or queue, in_chat, closed, and so on), with optional filters. GET /chat.

underchat_list_contacts

List the account's chat contacts with paging and filters. GET /chat/contacts.

underchat_list_label_templates

List the label templates (etiquetas) of the account. GET /label-template.

underchat_list_sectors

List the sectors (setores) of the account. GET /sector.

underchat_list_users

List the users (attendants) of the account with paging and filters. GET /user.

underchat_list_workers

List the workers (channels) that can receive or transfer a chat, for filters and transfers. GET /chat/workers.

underchat_search_chat_messages

Search the messages of one chat for a text. GET /chat/{chat_id}/search.

underchat_search_chats

Search conversations by contact name or phone. GET /chat/search.

underchat_send_text_message

Send a WhatsApp text message into an existing chat, as the executor. The customer receives it. POST /chat/{chat_id} with type=text.

underchat_set_chat_labels

Send a list of label template ids to a chat. The API decides whether the list replaces or adds to the current labels; check the chat after the call. PATCH /chat/{chat_id}/label.

underchat_transfer_chat

Transfer a chat to another worker (channel), user or sector. Set at least one of worker_id, user_id or sector_id. POST /chat/{chat_id}/transfer.

underchat_update_chat_status

Move a chat to another state, for example closed, queue or in_chat. Closing ends the attendance for the customer. PATCH /chat/{chat_id}/status.

underchat_update_contact

Change the fields you send for one chat contact. Fields you omit stay as they are. PATCH /chat/contacts/{contact_id}.

Endpoints

URL	Transport	State	Latency	Checked
https://underchat.usefulapi.io/mcp	streamable-http	answering	210 ms	11 min ago

Alternatives to UnderChat MCP by usefulapi

same job, measured the same way

Regi MCP by usefulapi

by usefulapi

List WhatsApp numbers and templates; send an approved template message in Regi.

3 tools answering

AiSensy MCP by usefulapi

by usefulapi

Read AiSensy contacts, templates and campaigns; add contacts, send WhatsApp messages on approval.

17 tools answering

Loops MCP by usefulapi

by usefulapi

Manage Loops contacts, mailing lists, and transactional/event emails.

10 tools answering

Vision6 MCP by usefulapi

by usefulapi

Read Vision6 lists, contacts, messages and reports; update contacts; send transactional email/SMS.

23 tools answering

SendGrid MCP by usefulapi

by usefulapi

Send email and read templates, marketing contacts, lists, stats, bounces and unsubscribes.

11 tools answering

Emailchef MCP by usefulapi

by usefulapi

Read lists, contacts, campaign stats; add contacts; draft, schedule and send campaigns and SMS.

43 tools answering

Telegram MCP by usefulapi

by usefulapi

Read chats and members; send, edit and delete messages with a bot in Telegram.

9 tools answering

Trumpia MCP by usefulapi

by usefulapi

Read Trumpia lists, subscribers, keywords and reports; add contacts and send SMS or email campaigns.

22 tools answering

UnderChat MCP by usefulapi — questions

Answers built from our own checks of this server.

What can UnderChat MCP by usefulapi do?

It exposes 21 tools, read directly from the server on our last check. Among them: underchat_create_contact, underchat_find_contact_by_phone, underchat_get_chat_details, underchat_get_chat_messages, underchat_get_contact, underchat_get_unread_summary and 15 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 UnderChat MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 89 of 89 checks got a reply (100.0%), average response time 264 ms. The bar chart above shows every period we have measured.

How do I connect UnderChat 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 UnderChat MCP by usefulapi need an API key?

No. UnderChat MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 21 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is UnderChat MCP by usefulapi?

It answers our handshake in 264 ms on average, which is faster than 54% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is UnderChat MCP by usefulapi open source?

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