MCP server

Missive MCP by usefulapi

io.usefulapi/missive

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

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

Website Source

At a glance

Type

MCP server

Publisher

usefulapi.io (verified by the MCP Registry)

Status

Working at last check

Tools

19

Token cost

About 4,219 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

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

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add missive https://missive.usefulapi.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"missive","server_url":"https://missive.usefulapi.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"missive","server_url":"https://missive.usefulapi.io/mcp"}

Tools

• missive_create_contact ~257 tokens
  Create a contact in the given contact book. Missive: POST /contacts.
• missive_create_draft ~672 tokens
  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 ~87 tokens
  Get a single contact by id. Missive: GET /contacts/{id}.
• missive_get_conversation ~91 tokens
  Get a single conversation by id. Missive: GET /conversations/{id}.
• missive_get_message ~128 tokens
  Get a single message, including the full body. Missive: GET /conversations/{conversation_id}/messages/{id}.
• missive_list_contact_books ~148 tokens
  List contact books (address books). Missive: GET /contact_books.
• missive_list_contact_groups ~216 tokens
  List contact groups or organizations within a contact book. Missive: GET /contact_groups.
• missive_list_contacts ~275 tokens
  List contacts in a contact book. Missive: GET /contacts.
• missive_list_conversation_comments ~172 tokens
  List internal comments (team chat) on a conversation. Missive: GET /conversations/{id}/comments.
• missive_list_conversation_drafts ~167 tokens
  List draft messages on a conversation. Missive: GET /conversations/{id}/drafts.
• missive_list_conversation_messages ~176 tokens
  List the messages (emails) in a conversation. Missive: GET /conversations/{id}/messages.
• missive_list_conversation_posts ~174 tokens
  List posts (integration/app-generated items) on a conversation. Missive: GET /conversations/{id}/posts.
• missive_list_conversations ~482 tokens
  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 ~140 tokens
  List organizations you belong to. Missive: GET /organizations.
• missive_list_responses ~160 tokens
  List canned responses / templates. Missive: GET /responses.
• missive_list_shared_labels ~166 tokens
  List shared labels (team-shared folders/tags). Missive: GET /shared_labels.
• missive_list_teams ~158 tokens
  List teams in the organization(s). Missive: GET /teams.
• missive_list_users ~156 tokens
  List users (team members). Missive: GET /users.
• missive_update_conversation ~394 tokens
  Update a conversation — assign/unassign users, add/remove shared labels, close/reopen, move to inbox, or set subject/color/team. Missive: PATCH /conversations/{id}.

Browse

• Email

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