Things 3 MCP 服务

Things App MCP

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MCP server for Things 3 on macOS. It adds, reads, and updates to-dos through the Things URL scheme and JXA, and npm run sync copies the Today list into a Notion database.

The server talks to the client over stdio on your Mac.

Requirements

• macOS
• Things 3
• Node.js 18 or newer
• Things URLs turned on: Things > Settings > General > Enable Things URLs
• Automation permission for whichever app starts the server (Terminal, Claude, Cursor, or Codex). osascript has to be allowed to control Things.

Install

git clone https://github.com/lucas-flatwhite/things-app-mcp.git
cd things-app-mcp
npm install
npm run build

You can also skip the clone and let the client run npx -y things-app-mcp@latest. The configs below do that.

Connect a client

Adding and reading to-dos works without a token. Changing an existing item, or applying a reschedule, needs the Things auth token.

In Things: Settings > General > Enable Things URLs > Manage.

Set THINGS_AUTH_TOKEN in the client config. If you pass authToken on each call, that token lands in the client log. Replies strip the token, notes, and JSON data. The URL given to open still has the token for a moment. Things expects it there.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "things": {
      "command": "npx",
      "args": ["-y", "things-app-mcp@latest"],
      "env": {
        "THINGS_AUTH_TOKEN": "your-token-here"
      }
    }
  }
}

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "things": {
      "command": "npx",
      "args": ["-y", "things-app-mcp@latest"],
      "env": {
        "THINGS_AUTH_TOKEN": "your-token-here"
      }
    }
  }
}

Codex

~/.codex/config.toml

[mcp_servers.things]
command = "npx"
args = ["-y", "things-app-mcp@latest"]
startup_timeout_sec = 20
tool_timeout_sec = 120

[mcp_servers.things.env]
THINGS_AUTH_TOKEN = "your-token-here"

Gemini CLI

export THINGS_AUTH_TOKEN="your-token-here"
gemini mcp add things npx -y things-app-mcp@latest

For a local build, use node and the absolute path to dist/index.js instead of npx.

Tools

Writing

When a write succeeds, macOS has opened the URL. Read the item again if you need to see that Things saved it. add-todo does not return the new id.

Reading

Call get-todos with one of list, project, area, or tag. If you leave them all out, you get Today.

Lists: Inbox, Today, Anytime, Upcoming, Someday, Logbook.

Results include titles and notes.

Clearing Today

reschedule-distant-todos looks through Today for open items whose deadline is still far off, and moves the start date to a few days before that deadline.

No arguments means preview only, and only when a token is set. To apply:

{
  "daysThreshold": 7,
  "bufferDays": 3,
  "dryRun": false,
  "confirm": true
}

• daysThreshold (default 7): a closer deadline stays in Today.
• bufferDays (default 3): new start date, this many days before the deadline.
• An item you put on today yourself (activationDate is today) stays where it is.
• dryRun: false without confirm: true returns an error and leaves Today unread.
• confirm is a tool argument. A client that reads destructiveHint may ask again before it runs.
• The update is one JSON batch.

update-todo, update-project, and updates through add-json do not take confirm. With the token set, those calls can edit or complete items.

Examples

Add a to-do:

{
  "title": "Buy groceries",
  "when": "today",
  "tags": "Errand"
}

Create a project and its to-dos:

{
  "title": "Launch Website",
  "area": "Work",
  "todos": "Design mockups\nBuild frontend\nDeploy"
}

Read Today:

{ "list": "Today" }

Read one project:

{ "project": "Launch Website" }

Complete a to-do once you have its id:

{
  "id": "the-todo-id",
  "completed": true
}

Preview a reschedule, then apply it:

{ "dryRun": true }

{ "dryRun": false, "confirm": true }

Dates, lists, and JSON

Write tools follow the Things URL scheme.

When and deadline

show list ids

inbox, today, anytime, upcoming, someday, logbook, tomorrow, deadlines, repeating, all-projects, logged-projects

add-json types

To update, set "operation": "update" and "id". That needs the auth token.

Layout

src/index.ts            MCP tools
src/things-url.ts       things:/// URLs, and stripping secrets from replies
src/applescript.ts      JXA reads
src/reschedule-mode.ts  preview versus apply
src/notion-sync.ts      `npm run sync`, separate from the MCP server
src/notion-sync/        plan, Notion client, Things read and write

Writes build a things:/// URL and hand it to open. Reads run JXA through osascript.

Development

npm install
npm run build
npm run dev    # tsc --watch
npm start      # node dist/index.js

Testing

See TESTING.md.

# No Things required.
node scripts/test-unit.js

# Sync plan, hashes, and the Notion client. No network and no Things.
npm run test:sync

# macOS and Things 3. Writes stay off.
npm run test:tools

THINGS_MCP_TEST_ALLOW_WRITES=1 npm run test:tools

One case in the unit script reads Today when Things is installed. Skip it with:

THINGS_UNIT_SKIP_LIVE=1 node scripts/test-unit.js

Notion sync

npm run sync copies the Things Today list into Notion database 9ac2752989a646918bfa93ab900dfb8c. That list is whatever Things is showing under Today: items for today, this evening, and overdue items still sitting there. Inbox, Upcoming, Anytime, and Someday are left as they are.

You start each run yourself.

Setup

Put the Notion token in the macOS keychain. Every run reads it from there.

security add-generic-password -s things-notion-sync -a "$USER" -w

Set THINGS_AUTH_TOKEN when the plan changes a Things to-do. A run that only creates or edits Notion rows can go without it.

If a column is missing, the dry-run exits 2 and prints a database patch. This command adds the missing columns and then writes the plan:

npm run sync -- --apply --ensure-schema

시작일 is the calendar formula. A missing column, or a column of some other type, prints a warning and the sync continues. Paste this into Notion:

if(test(prop("언제"), "^\d{4}-\d{2}-\d{2}"), parseDate(slice(prop("언제"), 0, 10)), parseDate(""))

Run

npm run build
npm run sync                  # print the plan
npm run sync -- --apply       # write it

The table columns are action, things_id, title, fields, and detail. With nothing to do, the command prints 변경 없음. The same text is appended to ~/Library/Logs/things-notion-sync.log, with ids, actions, and field names. Tokens and note text are stripped first.

Columns

A tag name Things has never seen is dropped. Checklists, headings, and repeat rules stay in Things. A repeat that is in Today is copied like any other to-do. If Things ignores a when or deadline change, that Things value is written back to the row.

Marking a to-do done

On the Notion page, set 상태 to 완료. Leave things_id and 동기화 해시 alone. Then run npm run sync -- --apply while the to-do is still in Today, and Things completes it. The same works the next day if it is still in Today when you run the command. 취소 cancels the to-do. 열림 opens it again.

After Things completes it, the to-do leaves Today and the row stays 완료. The next run fills any other differing fields from Things. From then on, edits to that row stay in Notion.

A new Notion row with an empty 언제, or with 오늘 or 오늘 저녁, is added to Today when you apply.

Deleting rows

Rows are matched by things_id. Delete an 열림 row while its to-do is still in Today, and the next run creates the row again. The to-do stays open.

Finished rows can stay in the database. A completed to-do has left Today, so that row is left alone. A row can also be deleted after its to-do moves to Inbox, Anytime, Upcoming, or Someday. It comes back if the to-do returns to Today.

License

MIT