Missive MCP by usefulapi MCP Server

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answering

Missive MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 19 tools. Last commit 2 Nov 2026.

Read email/chat conversations, messages, contacts and teams; draft, send and update threads.

Uptime history 91 days of history · worst day 13%

91 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

151 ms

Response time

average over 24h

Stars

last commit 2 Nov 2026

What changed 61

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 30 September 2026. No other catalogue keeps this.

2 Nov a tool changed version

31 Oct a tool changed version4 times that day

30 Oct a tool changed version2 times that day

29 Oct a tool changed version2 times that day

28 Oct a tool changed version2 times that day

27 Oct a tool changed version

25 Oct a tool changed version4 times that day

24 Oct a tool changed version3 times that day

23 Oct a tool changed version

22 Oct a tool changed version

and 51 more, back to 30 September 2026

Nothing serious here today

Today is the operative word: we check Missive 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 missive --transport http https://missive.usefulapi.io/mcp

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

https://missive.usefulapi.io/mcp

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 19

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

missive

missive_create_contact

Create a contact in the given contact book. Missive: POST /contacts.

missive_create_draft

Create a draft email/message. WARNING: setting send=true SENDS a real email immediately (send_at schedules it) instead of saving a draft. Attach to an existing thread with `conversation`. Missive: POST /drafts.

missive_get_contact

Get a single contact by id. Missive: GET /contacts/{id}.

missive_get_conversation

Get a single conversation by id. Missive: GET /conversations/{id}.

missive_get_message

Get a single message, including the full body. Missive: GET /conversations/{conversation_id}/messages/{id}.

missive_list_contact_books

List contact books (address books). Missive: GET /contact_books.

missive_list_contact_groups

List contact groups or organizations within a contact book. Missive: GET /contact_groups.

missive_list_contacts

List contacts in a contact book. Missive: GET /contacts.

missive_list_conversation_comments

List internal comments (team chat) on a conversation. Missive: GET /conversations/{id}/comments.

missive_list_conversation_drafts

List draft messages on a conversation. Missive: GET /conversations/{id}/drafts.

missive_list_conversation_messages

List the messages (emails) in a conversation. Missive: GET /conversations/{id}/messages.

missive_list_conversation_posts

List posts (integration/app-generated items) on a conversation. Missive: GET /conversations/{id}/posts.

missive_list_conversations

List conversations (email/chat threads). Missive requires EXACTLY ONE mailbox-type filter — one of inbox / assigned / closed / flagged / snoozed / trashed / all / shared_label / team_inbox / team_all / organization. Missive: GET /conversations.

missive_list_organizations

List organizations you belong to. Missive: GET /organizations.

missive_list_responses

List canned responses / templates. Missive: GET /responses.

missive_list_shared_labels

List shared labels (team-shared folders/tags). Missive: GET /shared_labels.

missive_list_teams

List teams in the organization(s). Missive: GET /teams.

missive_list_users

List users (team members). Missive: GET /users.

missive_update_conversation

Update a conversation — assign/unassign users, add/remove shared labels, close/reopen, move to inbox, or set subject/color/team. Missive: PATCH /conversations/{id}.

Endpoints

URL	Transport	State	Latency	Checked
https://missive.usefulapi.io/mcp	streamable-http	answering	68 ms	11 min ago

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Missive MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Missive MCP by usefulapi do?

It exposes 19 tools, read directly from the server on our last check. Among them: missive_create_contact, missive_create_draft, missive_get_contact, missive_get_conversation, missive_get_message, missive_list_contact_books and 13 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 Missive 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 151 ms. The bar chart above shows every period we have measured.

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

No. Missive MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 19 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Missive MCP by usefulapi?

It answers our handshake in 151 ms on average, which is faster than 83% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Missive 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 missive.usefulapi.io, which runs on its operator's own terms.