Default MCP Servers - Productivity & Communication¶

Email, calendar, notes, chat, team messaging - the surfaces an agent most often reaches into on behalf of a user. Every entry is a vendor-official remote MCP server and uses OAuth 2.1 Authorization Code; the Microsoft entries route through Microsoft 365 Agent365 and need MS_TENANT_ID set as an OS environment variable before connect.

Entries (8)¶

Click any card to expand the full spec inline - transport (Streamable HTTP / STDIO), authentication shape (OAuth 2.1 / API key / Bearer / none), required environment variables, vendor URL or stdio command, and the upstream docs link.

Gmail 🔐

productivity · global · preview preview

Read, search, and send Gmail messages, manage labels and drafts. Google Workspace MCP (Preview).

Vendor Google · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Outlook Mail 🔐

productivity · global ga

Read, send, and organise Outlook mail across folders. Routed through Microsoft 365 Agent365 - requires your tenant ID (MS_TENANT_ID).

Vendor Microsoft · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Google Calendar 🔐

productivity · global · preview preview

Create, list, and manage Google Calendar events, attendees, reminders, and recurring schedules. Google Workspace MCP (Preview).

Vendor Google · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Outlook Calendar 🔐

productivity · global ga

Browse Outlook calendars, schedule and update meetings, manage availability via Microsoft 365 Agent365. Requires MS_TENANT_ID.

Vendor Microsoft · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Notion 🔐

productivity · global ga

Browse, create, and edit Notion pages, databases, and properties. Vendor-hosted remote MCP with OAuth 2.1 + PKCE.

Vendor Notion · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Kakao PlayMCP 🔐

productivity · korea · aggregator ga

Kakao aggregator hub - KakaoTalk send-to-self, Talk Calendar, KakaoMap, Gift, Melon, plus 200+ third-party MCPs. KR-focused.

Vendor Kakao · T1 vendor

Auth Bearer (OTT-derived)

Click for transport · auth · setup · required env · description · docs

Vendor - Kakao (vendor-official)

Transport - Streamable HTTP at https://playmcp.kakao.com/mcp

Auth - Authorization: Bearer ${KAKAO_PLAYMCP_TOKEN} header. PlayMCP does not support standard OAuth 2.1 Authorization Code (redirect_uri is not registered and the public DCR endpoint is IP-allowlisted), so the OAuth form is not used. Issue a One-Time Token (OTT), exchange it for an access token, export the access token as KAKAO_PLAYMCP_TOKEN, then activate. Access tokens are valid for 12 hours; refresh tokens for 90 days.

Required env - KAKAO_PLAYMCP_TOKEN Stability - GA · Tier - Tier 1 Tags - korea · aggregator

Setup (one-time, ~3 minutes)¶

1. Issue an OTT. Open https://playmcp.kakao.com/toolbox, sign in with Kakao, find the OpenClaw integration and click Connect. PlayMCP issues a 64-character hex OTT, valid for ~10 minutes. Copy it.

2. Exchange the OTT for access + refresh tokens and print them. The playground manages the env values itself - copy the two printed lines into its Environment Variables card (desktop launcher or Edit Config) before launching, then start / restart the app.

macOS · Linux · WSL · Git Bash - only curl and sed:

export OTT="paste-the-64-hex-OTT-here"

RESP=$(curl -sS -X POST 'https://playmcp.kakao.com/api/v1/auths/otts:exchange' \
  -H 'Content-Type: application/json' \
  -d "{\"tokenValue\":\"$OTT\"}")

echo "KAKAO_PLAYMCP_TOKEN=$(printf '%s'   "$RESP" | sed -nE 's/.*"accessToken":\{[^}]*"tokenValue":"([^"]+)".*/\1/p')"
echo "KAKAO_PLAYMCP_REFRESH=$(printf '%s' "$RESP" | sed -nE 's/.*"refreshToken":\{[^}]*"tokenValue":"([^"]+)".*/\1/p')"

Windows PowerShell - uses the built-in Invoke-RestMethod + ConvertFrom-Json:

$OTT = "paste-the-64-hex-OTT-here"

$resp = Invoke-RestMethod -Method Post `
  -Uri 'https://playmcp.kakao.com/api/v1/auths/otts:exchange' `
  -ContentType 'application/json' `
  -Body "{`"tokenValue`":`"$OTT`"}"

Write-Host "KAKAO_PLAYMCP_TOKEN=$($resp.accessToken.tokenValue)"
Write-Host "KAKAO_PLAYMCP_REFRESH=$($resp.refreshToken.tokenValue)"

3. Paste the two KAKAO_PLAYMCP_* lines into the playground's Environment Variables, then start (or restart) the playground.

4. Activate the catalog entry. MCP Server page → Inactive MCP → Productivity → Kakao PlayMCP → click. The form pre-fills with Transport Streamable HTTP, URL https://playmcp.kakao.com/mcp, and Authorization: Bearer ${KAKAO_PLAYMCP_TOKEN} in Headers. Click Save & Connect - the dot turns green and the Inspector shows kakaotalk_send_to_self, talk_calendar_*, kakaomap_*, gift_*, melon_*, plus 200+ third-party relays.

Refresh ritual (every 12 hours)¶

The access token expires in 12 hours. Run the refresh-token grant below, then handle the two printed KAKAO_PLAYMCP_* lines exactly as in step 2 - paste into the playground's Environment Variables, restart, click Save & Connect.

RESP=$(curl -sS -X POST 'https://playauth.kakao.com/playmcp/oauth2/token' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -d 'grant_type=refresh_token' \
  -d "refresh_token=$KAKAO_PLAYMCP_REFRESH" \
  -d 'client_id=HElMUWdVoroTsrXxezeTSemg8gXzzCKWARb5MJux8gY')

echo "KAKAO_PLAYMCP_TOKEN=$(printf '%s'   "$RESP" | sed -nE 's/.*"access_token":"([^"]+)".*/\1/p')"
echo "KAKAO_PLAYMCP_REFRESH=$(printf '%s' "$RESP" | sed -nE 's/.*"refresh_token":"([^"]+)".*/\1/p')"

The grant endpoint returns snake_case access_token / refresh_token at the top level (different from the OTT exchange shape), so the regex differs - that's the only change from step 2.

Refresh ritual (every 90 days)¶

The refresh token expires after 90 days. When that happens, the 12-hour grant returns an error - start over from step 1 (issue a new OTT, exchange it, paste into Environment Variables).

Tools - published by the vendor and discovered live on connect; open the Inspector after Save & Connect for the live tools and their recomputed levels.

Description

Kakao aggregator hub - KakaoTalk send-to-self, Talk Calendar, KakaoMap, Gift, Melon, plus 200+ third-party MCPs. KR-focused.

Docs

PlayMCP product - https://playmcp.kakao.com/

Slack 🔐

communication · global ga

Read and post Slack messages across channels and DMs, search the workspace, manage user/channel metadata. Slack's official remote MCP.

Vendor Slack · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Microsoft Teams 🔐

communication · global ga

Send messages to Teams chats and channels, search conversations, manage meetings via Microsoft 365 Agent365. Requires MS_TENANT_ID.

Vendor Microsoft · T1 vendor

Auth OAuth 2.1

Click for transport · auth · required env · description · docs

Workflow combinations¶

The eight entries on this page are usually most useful as pairs or triplets behind a single agent turn. A few combinations that pay for themselves:

Inbox triage → calendar - Gmail (or Outlook Mail) + Google Calendar (or Outlook Calendar). An agent reads new messages, extracts proposed times, and writes accepted ones to the calendar in one turn.
Standup digest → channel - Notion (or Atlassian Rovo from the Dev page) + Slack (or Microsoft Teams). Pulls overnight changes from the doc, posts a digest before the morning meeting.
Cross-suite triage - Outlook Mail + Microsoft Teams (both Microsoft 365 Agent365). Single MS_TENANT_ID env unlocks both; the agent can answer a Teams DM with a mail attachment in the same turn.
Mixed-tenant - Gmail + Outlook Mail. Two OAuth flows but one Inspector - switch sidebar selection per connection; chat sees both as a flat tool set.

Auth & secrets¶

Every entry on this page uses OAuth 2.1 Authorization Code. Two also need an OS environment variable on top of OAuth, supplied as a ${VAR} placeholder in the URL or requiredEnv:

Connection	OAuth issuer	Extra env
Gmail	`https://accounts.google.com` (Google Workspace scopes - preview)	-
Google Calendar	`https://accounts.google.com` (calendar scope - preview)	-
Outlook Mail	`https://login.microsoftonline.com/${MS_TENANT_ID}/v2.0`	`MS_TENANT_ID`
Outlook Calendar	`https://login.microsoftonline.com/${MS_TENANT_ID}/v2.0`	`MS_TENANT_ID`
Notion	Notion-hosted OAuth 2.1 + PKCE	-
Kakao PlayMCP	Bearer header (OTT-derived access token), 12 h refresh ritual - setup	`KAKAO_PLAYMCP_TOKEN`
Slack	Slack-hosted OAuth	-
Microsoft Teams	`https://login.microsoftonline.com/${MS_TENANT_ID}/v2.0`	`MS_TENANT_ID`

Set MS_TENANT_ID in your shell or in the desktop launcher's Environment Variables card before you click Save & Connect - the connection fails fast with a clear error if it's missing.

Picking guide¶

If you need...	Reach for
The lightest-weight personal-inbox demo	`Gmail` - preview but no tenant config
Anything inside a Microsoft 365 tenant	`Outlook Mail` / `Outlook Calendar` / `Microsoft Teams` - share one `MS_TENANT_ID` env
A doc store that doubles as a knowledge base for RAG	`Notion` - pages and databases come back as MCP resources
Channel posting from agentic flows	`Slack` for fast-moving teams · `Microsoft Teams` for 365 shops
Korean-domain coverage (KakaoTalk send-to-self, Talk Calendar, Kakao Map, 200+ relays)	`Kakao PlayMCP`

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