Self-hostable calendar MCP service for Keeper.sh that lets Claude list calendars and accounts, read events, create or update events, delete events, respond to invites, and retrieve iCal feed URLs through Keeper's API.
Keeper's MCP tools can read calendar data and perform write operations including event creation, event updates, event deletion, and RSVP changes., The MCP handler requires an authenticated bearer token and checks for the Keeper MCP read scope before exposing tools., Tool calls proxy to Keeper API endpoints with the caller's bearer token, so the MCP client inherits the user's connected calendar permissions., Start by listing calendars and reading bounded date ranges; require human confirmation before modifying or deleting events., Review Google, Microsoft, iCloud, CalDAV, ICS, and self-hosted calendar account permissions before exposing them to an agent.
Privacy notes
Calendar events can expose titles, descriptions, locations, free/busy status, account names, provider names, calendar names, calendar URLs, and iCal feed URLs., OAuth tokens, CalDAV credentials, session tokens, bearer tokens, auth secrets, encryption keys, database URLs, and MCP URLs are sensitive deployment data., Keeper stores and syncs calendar data across connected providers; logs, MCP transcripts, API responses, and monitoring traces can include private schedule details., Redact event ids, calendar ids, account names, feed URLs, bearer tokens, event text, locations, and provider details before sharing debug output.
Author
ridafkih
Submitted by
oktofeesh1
Claim status
unclaimed
Last verified
2026-06-06
Decision playbook
Review trust signals before you adopt
Signals are present but mixed. Use the checklist below to confirm the source and operational safety for your environment.
Compare context
Selected
0
Current score
63
Baseline
—
Delta
No baseline selected
No major trust-signal divergence detected in the current selection.
Source and provenance checks
Needs review
Confirm ownership and provenance before trusting install instructions.
Source link availableRequired
Open the canonical repository and verify ownership.
Done
Source provenance statusRequired
Marked as source-backed.
Done
Metadata reviewed
No reviewed flag detected in metadata.
Pending
Safety and privacy checks
Complete
Validate risk disclosures before installation or API wiring.
Safety notes presentRequired
Review the listed safety guidance before running commands.
Done
Privacy notes presentRequired
Review data handling notes before connecting accounts or secrets.
Done
Trust level risk gateRequired
Trust level does not block evaluation.
Done
Package and install checks
Needs review
Check package metadata and artifact integrity signals.
Install payload available
Install or copy payload is available for review.
Done
Package verification flag
No package verification flag provided.
Pending
Checksum metadata
No checksum provided for downloaded artifact.
Pending
Compare-driven decision checks
Needs review
Use compare context to validate trade-offs before adoption.
Compare tray has multiple entries
Add at least one more entry to compare trust differences.
5 safety and 4 privacy notes across 4 risk areas. Review closely: credentials & tokens, permissions & scopes, third-party handling.
4 areas
SafetyGeneralKeeper's MCP tools can read calendar data and perform write operations including event creation, event updates, event deletion, and RSVP changes.
SafetyCredentials & tokensThe MCP handler requires an authenticated bearer token and checks for the Keeper MCP read scope before exposing tools.
SafetyCredentials & tokensTool calls proxy to Keeper API endpoints with the caller's bearer token, so the MCP client inherits the user's connected calendar permissions.
SafetyGeneralStart by listing calendars and reading bounded date ranges; require human confirmation before modifying or deleting events.
SafetyPermissions & scopesReview Google, Microsoft, iCloud, CalDAV, ICS, and self-hosted calendar account permissions before exposing them to an agent.
PrivacyThird-party handlingKeeper stores and syncs calendar data across connected providers; logs, MCP transcripts, API responses, and monitoring traces can include private schedule details.
Disclosure: AGPL-3.0-licensed open-source Keeper.sh project with optional hosted service. The MCP service is source-backed and self-hostable, but it controls sensitive calendar data and should be deployed with production-grade auth and logging.
Safety notes
Keeper's MCP tools can read calendar data and perform write operations including event creation, event updates, event deletion, and RSVP changes.
The MCP handler requires an authenticated bearer token and checks for the Keeper MCP read scope before exposing tools.
Tool calls proxy to Keeper API endpoints with the caller's bearer token, so the MCP client inherits the user's connected calendar permissions.
Start by listing calendars and reading bounded date ranges; require human confirmation before modifying or deleting events.
Review Google, Microsoft, iCloud, CalDAV, ICS, and self-hosted calendar account permissions before exposing them to an agent.
Keeper stores and syncs calendar data across connected providers; logs, MCP transcripts, API responses, and monitoring traces can include private schedule details.
Self-hosted or hosted Keeper.sh deployment with the MCP service available.
Keeper API, database, auth secret, and MCP public URL configured.
Authorized Keeper bearer token with the required MCP read scope.
Connected calendar accounts and calendars reviewed for read and write access.
Clear approval policy for calendar creation, updates, deletes, RSVP changes, and invite handling.
Schema details
Install type
cli
Troubleshooting
No
Source repository stats
Scope
Source repo
Collection metadata
Estimated setup
45 minutes
Difficulty
advanced
Tool listing metadata
Disclosure
AGPL-3.0-licensed open-source Keeper.sh project with optional hosted service. The MCP service is source-backed and self-hostable, but it controls sensitive calendar data and should be deployed with production-grade auth and logging.
Keeper.sh MCP Server is the dedicated MCP service in Keeper.sh, an open-source
calendar sync platform. It exposes authenticated calendar tools for connected
Keeper accounts, letting Claude list calendars and accounts, read events, create
or update events, delete events, respond to invitations, and retrieve an iCal
feed URL through Keeper's API.
Use it when a team wants a self-hostable calendar MCP service that can sit behind
Keeper's auth and connected-provider model rather than relying on a single
hosted Google Calendar MCP integration.
These sources were reviewed on 2026-06-06. Prefer the live repository,
README, license, MCP package metadata, toolset, handler, context, environment,
route, and Dockerfile for current setup and behavior details.
Features
Run Keeper's dedicated @keeper.sh/mcp service as part of a Keeper
deployment.
Authenticate MCP requests with Keeper's bearer-token and protected-resource
flow.
List connected calendars and calendar accounts.
Count events and fetch events by explicit date range.
Fetch a single event by id.
Create, update, and delete calendar events.
View pending invites and respond with accepted, declined, or tentative RSVP
status.
Retrieve the user's iCal feed URL.
Localize event times with an IANA timezone argument.
Installation
Deploy Keeper.sh with the MCP service, set the required MCP environment
variables, and expose the MCP route through the same trusted Keeper deployment:
Keep the MCP service behind TLS and the same access controls used for the Keeper
web and API services.
Use Cases
Ask Claude what is on a calendar during a bounded time range.
Compare events across connected work, personal, or shared calendars.
Draft a new event and create it only after review.
Update event details when a meeting time or location changes.
Remove a stale event with explicit confirmation.
Respond to pending calendar invitations from an agent workflow.
Retrieve the user's iCal feed URL for a reviewed subscription workflow.
Safety and Privacy
Keeper's MCP service can read and mutate calendar data. Require explicit
approval before event creation, updates, deletes, or RSVP changes, and keep tool
requests bounded to specific calendars and date ranges where possible. A bearer
token used by the MCP client should be treated like calendar account access.
Calendar data is highly personal and operationally sensitive. Event titles,
descriptions, locations, free/busy status, account names, calendar names, feed
URLs, OAuth tokens, CalDAV credentials, database URLs, auth secrets, logs, and
MCP transcripts can expose private schedules or credentials. Use TLS,
least-privilege tokens, encryption keys, audit logs, backups, and redaction
before sharing any troubleshooting material.
Duplicate Check
No ridafkih/keeper.sh, Keeper.sh MCP, Keeper calendar MCP, self-hosted
calendar MCP, CalDAV MCP, or matching source URL entry was found in
content/mcp or README.md. The existing CalendarMCP entry covers a hosted
Google Calendar service; it does not cover Keeper's self-hostable multi-provider
calendar sync platform and dedicated MCP service.
Show that Keeper.sh MCP Server is listed on HeyClaude. Paste this Markdown into your README — it renders the badge and links back to this page.
[](https://heyclau.de/entry/mcp/keeper-sh-mcp-server)
How it compares
Keeper.sh MCP Server side by side with 3 alternatives on trust, install, platform support, and disclosed safety notes — all from reviewed registry metadata.
Self-hostable calendar MCP service for Keeper.sh that lets Claude list calendars and accounts, read events, create or update events, delete events, respond to invites, and retrieve iCal feed URLs through Keeper's API.
macOS app and bundled stdio MCP server that lets Claude access selected local services such as Calendar, Contacts, Messages, Location, Maps, Reminders, camera, microphone, screenshots, Shortcuts, utilities, and Weather.
✓Keeper's MCP tools can read calendar data and perform write operations including event creation, event updates, event deletion, and RSVP changes.
The MCP handler requires an authenticated bearer token and checks for the Keeper MCP read scope before exposing tools.
Tool calls proxy to Keeper API endpoints with the caller's bearer token, so the MCP client inherits the user's connected calendar permissions.
Start by listing calendars and reading bounded date ranges; require human confirmation before modifying or deleting events.
Review Google, Microsoft, iCloud, CalDAV, ICS, and self-hosted calendar account permissions before exposing them to an agent.
✓Coolify MCP Server can start, stop, restart, redeploy, cancel deployments, update env vars, create or delete projects, environments, applications, databases, services, backups, storages, scheduled tasks, private keys, GitHub apps, and cloud tokens depending on API permissions.
Batch tools such as `restart_project_apps`, `bulk_env_update`, `stop_all_apps`, and `redeploy_project` can affect multiple production services at once.
Deployment, control, backup, storage, private key, cloud token, GitHub app, and scheduled-task operations should require explicit confirmation.
Custom `--header` values may carry auth-proxy secrets; never let an agent invent, log, or modify them casually.
Test on non-production projects or staging resources before allowing Claude to operate live Coolify infrastructure.
✓freee MCP can perform GET, POST, PUT, PATCH, and DELETE requests against supported freee APIs after OAuth authorization.
Write and delete operations can create, update, or remove accounting deals, expense applications, invoices, quotations, payment requests, HR records, attendance data, project time, sales records, IT assets, and e-signature documents.
The server validates API paths against OpenAPI schemas and checks company ID consistency, but users must still confirm business, accounting, payroll, and legal actions before execution.
OAuth tokens, client secrets, selected company IDs, and request payloads should be protected in configs, local storage, logs, and screenshots.
Use the official Remote MCP URL only; do not connect clients to unofficial endpoints that claim to be freee.
✓iMCP can expose highly sensitive personal macOS services to Claude through MCP tools.
Calendar, Contacts, Reminders, and Shortcuts tools can create, update, or run actions, not only read data.
Capture tools can take pictures, record microphone audio, and capture screenshots when the corresponding service is enabled and macOS permission is granted.
Messages access can read local message history after the user grants access to the Messages database.
The app can add or update the iMCP entry in Claude Desktop MCP configuration while preserving other server entries.
Enable only the services needed for a task and do not mark clients as trusted unless you want repeated connections to bypass prompts.
Privacy notes
✓Calendar events can expose titles, descriptions, locations, free/busy status, account names, provider names, calendar names, calendar URLs, and iCal feed URLs.
OAuth tokens, CalDAV credentials, session tokens, bearer tokens, auth secrets, encryption keys, database URLs, and MCP URLs are sensitive deployment data.
Keeper stores and syncs calendar data across connected providers; logs, MCP transcripts, API responses, and monitoring traces can include private schedule details.
Redact event ids, calendar ids, account names, feed URLs, bearer tokens, event text, locations, and provider details before sharing debug output.
✓Coolify access tokens, base URLs, custom headers, application UUIDs, server IPs, domains, logs, env vars, deployment logs, private keys, cloud-provider tokens, GitHub app data, team membership, backups, database metadata, and service configuration can be exposed to the MCP client.
Application and deployment logs may contain secrets, customer data, build output, container metadata, private repository details, and runtime errors.
Environment variable and cloud-token tools can reveal or mutate sensitive infrastructure credentials.
Documentation search is local to the server, but Coolify API calls contact the configured Coolify instance.
Keep tokens and auth-proxy headers in local MCP client configuration only, and avoid sharing transcripts that include infrastructure identifiers or logs.
✓Tool calls can expose company IDs, user details, accounting transactions, bank and wallet metadata, invoices, receipts, expense applications, payroll and HR records, attendance data, employee profiles, project workloads, customer and partner data, IT assets, and e-signature documents.
freee receives API requests, OAuth tokens, request parameters, uploaded files, and business data according to the user's freee account, API scopes, and selected company.
Local mode stores OAuth configuration and tokens on the user's machine; remote mode authenticates through freee's hosted MCP flow.
Generated reports, request errors, API responses, and skill references can enter MCP client context and model logs.
✓Tool calls can expose contacts, phone numbers, email addresses, calendars, event details, reminders, message text, participants, location, routes, map queries, screenshots, camera images, audio snippets, shortcut names, and weather/location context.
iMCP's README states that iMCP does not collect or store user data, but MCP clients and model providers can receive tool-call data as part of the conversation.
Local logs, screenshots, approval dialogs, MCP transcripts, Claude Desktop config, and trusted-client settings may reveal private service access and personal-data context.
Review every service toggle and macOS permission before enabling iMCP for personal accounts, shared machines, work devices, or regulated data.
Prerequisites
Self-hosted or hosted Keeper.sh deployment with the MCP service available.
Keeper API, database, auth secret, and MCP public URL configured.
Authorized Keeper bearer token with the required MCP read scope.
Connected calendar accounts and calendars reviewed for read and write access.
Running Coolify instance with API access enabled.
Coolify API access token scoped to the resources Claude may inspect or manage.
Node.js 20 or newer for the published npm server.
Review of which servers, projects, applications, databases, services, deployments, env vars, private keys, teams, cloud tokens, and scheduled tasks the token can access.
A freee account and permission to access the intended company, office, or organization data.
Review of freee API scopes for accounting, HR, invoices, project management, sales, IT management, and freee Sign.
For local setup, a registered freee application with OAuth client credentials and an approved callback URL.
Review of which company ID or office should be active before allowing API calls.
macOS 15.3 or later.
iMCP app installed from the upstream release or Homebrew cask.
Claude Desktop, Claude Code, Cursor, Amp, or another MCP client that can launch the bundled stdio server.
macOS permissions reviewed for each enabled service.
Install
Deploy Keeper.sh with the MCP service enabled, configure `MCP_PUBLIC_URL`, and connect an MCP client to the Keeper MCP endpoint with an authorized bearer token.
npx -y @masonator/coolify-mcp
npx freee-mcp configure
Install the iMCP macOS app, enable only the services you need, then configure the bundled imcp-server from the app menu or your MCP client.