Integrations

The services you already use, in one place.

Nineteen connections today. Each says what it reads, what it may do, and which of those things ask you first. You keep the account; Castald keeps only a sealed key.

Your account, your bill

Every connection is to an account in your name. You pay the supplier directly; Castald never holds an account on your behalf.

Reading is free; acting asks

Reading never changes anything. Sending, paying, unlocking and deleting always come to you first, as one plain line.

Keys stay sealed

Tokens and keys live in the vault, opened in memory for one use at a time. No screen and no tool can read one back.

I. Mail and diary

The post and the calendar, across every account.

Your steward finds what is unanswered, drafts the reply and finds the time. Nothing is sent or booked without your yes.

Google

Reads: Calendar, Gmail, and the names of files in Drive.
Does: Drafts replies.
Asks first: Sending mail; adding to the calendar.
You need: Your Google account, personal or Workspace. Free.

Microsoft 365

Reads: Outlook calendar and mail, and the names of files in OneDrive.
Does: Drafts replies.
Asks first: Sending mail; adding to the calendar.
You need: Outlook.com or Microsoft 365. A work account may need your administrator’s consent.

iCloud Calendar and Contacts

Reads: Calendars, contacts and birthdays.
Asks first: Adding to the calendar.
You need: An Apple ID with two-factor, and an app-specific password. Free.

II. Money

Every account, read as one.

Castald reads your books and your takings. It does not post to them, and it never moves money.

Xero

Reads: Cash position, overdue invoices, bills due, payments in and out. Every 30 minutes.
Does: Nothing. Read only.
You need: Your Xero organisation.

QuickBooks Online

Reads: Cash position, overdue invoices, bills due and payments received.
Does: Nothing. Read only.
You need: Your QuickBooks company.

Stripe

Reads: Balance, payments, payouts, disputes, and takings by the day.
Does: Nothing. Connected with a restricted, read-only key.
You need: Your Stripe account. Several may be connected.

III. The house

Doors, lights, cameras and climate.

Home Assistant is the house’s device layer: whatever it controls, your steward can see and command, within the rules.

The house, in full

Home Assistant

Reads: Locks, the alarm, doors and windows, who is home, lights, switches, blinds, heating and media players, live.
Does: Lights, switches, blinds, heating, scenes, and sound on Sonos, Apple TV and Chromecast.
Asks first: Locks. The alarm also needs your passkey.
You need: Your own Home Assistant, reachable securely from outside, for example through Nabu Casa.

Kenaez

Reads: People, vehicles, parcels, motion, the doorbell and line crossings at each camera; cameras going offline. Snapshots are scanned for viruses before they are kept.
Does: Lists cameras and recent events.
You need: A Kenaez site with the integration enabled.
Note: The live event link is being agreed with Kenaez. Until then, events arrive every 15 minutes.

IV. Network

Who is on the network, and whether it is up.

New devices, access points that drop, the internet going down. Restarts and guest access wait for your yes.

UniFi Network

Reads: Devices joining and leaving, new devices, access points offline, the internet going down.
Asks first: Restarting a device; letting a guest on.
You need: A UniFi console you administer, or a Site Manager account. Free with your UniFi equipment.

ExtremeCloud IQ

Reads: Devices, clients and alerts.
Asks first: Rebooting a device.
You need: An ExtremeCloud IQ account.

V. Energy

The cheapest hours, and anything unusual.

Half-hourly prices and usage become the cheapest window for the washing, a line in the brief, and a routine that waits for a low price.

Octopus Energy

Reads: Half-hourly usage, tariff rates, tariff changes and the account balance.
Does: Finds the cheapest hours and spots unusual use.
You need: An Octopus account and its API key. Free with your supply.
Note: Usage arrives as Octopus publishes it, not live. Other suppliers have no public API yet.

VI. Messages

One inbox for the business’s messages.

Messages to your business number and your bot arrive beside your mail. Every reply waits for your yes.

WhatsApp Business

Reads: Messages to your business number.
Asks first: Replying; sending a template message.
You need: A WhatsApp Business app with Meta. Meta’s conversation charges apply.
Note: This is not personal WhatsApp, which has no API.

Reads: Messages sent to your bot.
Asks first: Replying; announcing to a chat.
You need: A bot made with BotFather. Free.
Note: A bot cannot read your personal chats.

VIII. Work

Construction projects, on the wall.

For firms that run their sites on Graftix: who is on site, what is overdue and where the money stands.

Graftix

Reads: Projects, people on site, RFIs, incidents, risks, permits, tasks and project money.
Does: Nothing. Read only.
You need: Your Graftix organisation and a token from it.

IX. The AI and the voice

Provided from the first day. Yours to replace.

The AI and the voice come with Castald. Bring your own key for any of them, and change it whenever you like.

The model

Provided: Amazon Bedrock, in London.
Your own: Anthropic, OpenAI, OpenRouter, Mistral, Gemini, or a model you run yourself with Ollama.

Listening and speaking

Listens: Deepgram, streaming.
Speaks: ElevenLabs.
Without keys: Everything works by typing.

Wake word and voices

Wake word: Picovoice Porcupine, on the screen itself.
Voices: Picovoice Eagle recognises enrolled members. Off until each person enrols.

X. Your own

Connect what is not on the list.

Open standards in both directions, under the same rules as everything else.

For developers

MCP servers

Mount any MCP server over HTTP. Its reads run freely, its writes ask first, and anything it marks destructive is refused until you raise it.

Your own tools

Point Castald at your own HTTPS address and it becomes a tool, signed with a secret held in the vault.

Claude and other AI apps

Castald is an MCP server too. Connect an AI app with a proper sign-in; each grant follows one person’s role, and no app is ever given the highest tier.

Alexa

Speak to your steward from any Echo in the house. Small things happen at once; anything that asks first becomes an approval on your phone or the wall.

XI. Not possible, and why

We do not pretend.

Some services offer no sanctioned way in. Castald does not scrape them or borrow your password to get round it.

Personal WhatsApp and iMessage No sanctioned API

iCloud Drive, Notes, Reminders, Photos No public API

Amazon orders No API; read from your order emails

Instagram, Facebook, X, TikTok Opened in their own apps

Energy suppliers other than Octopus No public API yet

Ajax and Texecom alarm panels Waiting on API access

A steward for the whole estate.

Tell us a little about your house and your business. We will be in touch.

Request access See how it works