Enables sending and managing iMessage messages through Blujay phone numbers, including checking iMessage availability, reactions/tapbacks, editing and unsending iMessages, applying effects, and updating iMessage groups.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Blujay MCP Server Who texted me today that I haven't answered?"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Let Claude, Cursor, VS Code and other AI assistants work with your Blujay account: read conversations, see who needs a reply, and send iMessage, RCS and SMS from your Blujay phone numbers.
Every text is real. Blujay has no test mode. Most assistants ask before each send unless you've set them to approve tools automatically, so try it with
--allow-send-tolimited to your own number first (see Safety).
"Who texted me today that I haven't answered?"
"Summarize my conversation with Ava and draft a reply."
"Text +1 555 555 0123: running 10 minutes late."
"Send Ava the photo on my Desktop called beach.jpg."
"Text Sam the lease PDF in my Downloads folder."
"Send Ava happy birthday with balloons."
"Did my last message to Sam get delivered?"
"Does this number have iMessage?"
"Set up a webhook to https://example.com/blujay for new messages."
"How do I verify webhook signatures?"
Related MCP server: iMessage Max
You need Node.js 20 or later and a Blujay API key from the API tab in Blujay.
The buttons add the server with a placeholder key; replace blu_your_api_key with yours.
Open Settings → Developer → Edit Config and add:
{
"mcpServers": {
"blujay": {
"command": "npx",
"args": ["-y", "blujay-mcp"],
"env": { "BLUJAY_API_KEY": "blu_your_api_key" }
}
}
}Restart Claude Desktop.
claude mcp add blujay --env BLUJAY_API_KEY=blu_your_api_key -- npx -y blujay-mcpIn Cursor Settings → Tools & MCP → New MCP Server, add to mcp.json:
{
"mcpServers": {
"blujay": {
"command": "npx",
"args": ["-y", "blujay-mcp"],
"env": { "BLUJAY_API_KEY": "blu_your_api_key" }
}
}
}Add to .vscode/mcp.json in your project:
{
"servers": {
"blujay": {
"command": "npx",
"args": ["-y", "blujay-mcp"],
"env": { "BLUJAY_API_KEY": "${input:blujay-api-key}" }
}
},
"inputs": [
{ "id": "blujay-api-key", "type": "promptString", "description": "Blujay API key", "password": true }
]
}Run npx -y blujay-mcp with BLUJAY_API_KEY set. It speaks MCP over stdio.
Assistants ask before sends. Every tool is labeled read or act, so your client can approve reads and ask before anything reaches a person.
--allow-send-to +15555550123 limits every send and change to the numbers you list; try it on your own number first.
--read-only leaves out every tool that sends, changes or deletes.
Files only by full path: photos, videos, documents, contact cards and audio up to 100 MiB, checked by their contents.
Details, including what these checks can't stop, are in SECURITY.md.
Tool | What it does | Reaches a person |
| Your workspace and phone numbers, and what each can do | |
| Recent conversations, optionally with one person or on one number | |
| A conversation as a transcript, found by phone number, email or chat ID | |
| Conversations where the other person is waiting on you | |
| A message's delivery status and why it failed | |
| Whether a number uses iMessage | |
| Search contacts by name, phone or email, or list saved (or unsaved) contacts | |
| Webhook subscriptions and recent delivery attempts | |
| Search docs.blujay.io | |
| Text a person or group, or reply in a conversation, with an optional photo, video, document, contact card or audio file (sent as a voice memo) from your computer, a photo, video or contact card from a link, or an iMessage effect such as balloons or slam on a follow-up | Yes |
| Add or remove a tapback or an emoji reaction | Yes |
| Edit a sent iMessage | Yes |
| Unsend an iMessage | Yes |
| Mark a conversation as read | Yes (read receipt) |
| Show or hide the typing bubble | Yes |
| Rename an iMessage group, or add or remove a person | Yes |
| Create or update a contact, and tag it | Can: a tag can start a workflow that texts them |
| Stop all texts to a contact (off with | |
| Create a webhook subscription (off with | |
| Call any Blujay endpoint (only with | Depends |
Your MCP client shows these as ready-made actions:
Who needs a reply? Finds the conversations waiting on you and drafts a reply for each, without sending.
Summarize a conversation with one person.
Send me a test message to your own phone and confirm it arrived.
Option | Effect |
| Only the tools that read |
| Only reach these comma-separated numbers |
| Add |
|
"set BLUJAY_API_KEY": add the key to the env block of your MCP client's config, then restart the client.
401, API_KEY_REVOKED or API_KEY_EXPIRED: email support@blujay.io for a new key, then update BLUJAY_API_KEY.
The tools don't appear: check that npx -y blujay-mcp --version works in a terminal, and restart your MCP client.
Libraries for your own code: blujay on npm and blujay on PyPI
Questions and bugs: support@blujay.io or open an issue. Security issues: SECURITY.md
Whether a phone number or email address uses iMessage, so you know if a text will arrive as iMessage or as RCS/SMS. An email address can only get iMessage.
Inputs: phone_number (required).
Send Blujay events (new messages, delivery updates, reactions, calls) to an HTTPS URL you run. Returns the signing secret once.
Inputs: url (required), event_types (required).
Change the text of an iMessage you sent, within 15 minutes and up to 5 times. The person sees the edit.
Inputs: text (required), message_id (required).
Search your contacts by name, phone number or email, or with none of those, list them (newest changes first). A list shows contacts someone saved; set unsaved for the ones Blujay added on its own when you texted or called.
Inputs: email, limit, query, cursor, +2 more.
Conversations where the other person sent the last message, so they're waiting on you.
Inputs: since_hours.
Your Blujay workspace and its phone numbers: which number is which, whether each can send, and whether it can start conversations or only reply to people who texted first.
Inputs: no named parameters.
The latest messages in one conversation as a transcript, oldest first, with delivery status on your messages. Pass person (phone number or email) or chat_id.
Inputs: limit, person, chat_id.
One message's content and delivery: sent, delivered, read or failed, the service used, and why it failed.
Inputs: message_id (required).
Your conversations, most recently active first. Filter to one person with with (their phone number or email) or to one of your numbers with on_number.
Inputs: with, limit, cursor, on_number.
Your webhook subscriptions. With subscription_id, also its most recent delivery attempts, to debug a webhook that isn't arriving.
Inputs: subscription_id.
Mark a conversation as read. On iMessage the person may see a read receipt.
Inputs: chat_id (required).
Stop all texts to a contact, for example after they ask you to stop. Only someone in the Blujay app can undo it.
Inputs: contact_id (required), reason.
Add or remove a reaction on an iMessage: a tapback (love, like, dislike, laugh, emphasize, question) or any single emoji. One reaction per person per message: a new one replaces yours. The person sees it.
Inputs: message_id (required), emoji, remove, reaction.
Create a contact, or update the one with this phone number. Optionally add a tag. A tag can start a Blujay workflow that texts the contact.
Inputs: phone_number (required), tag, name, email.
Search docs.blujay.io for how something works: sending rules, webhooks, errors, limits, the SDKs.
Inputs: query (required).
Send a text from one of your Blujay numbers. This sends a real text to a real person; there is no test mode. Pass to (one phone number for a direct chat, or several plus from to start a group) or chat_id to reply in an existing conversation. Blujay picks iMessage, RCS or SMS and, for a direct chat without from, the number the person already knows you on. To send a photo, video, document (PDF, or a .docx, .xlsx or .pptx) or contact card that's on this computer, pass its full path as file_path; it's uploaded and sent in one step. Documents go over iMessage or RCS, not SMS. An audio file goes out as a voice memo, on its own (no text); for a link to audio, set voice_memo. An iMessage effect (confetti, fireworks, lasers, sparkles, celebration, hearts, love, balloons, happy_birthday, echo, spotlight, slam, loud, gentle, invisible) works only on a text follow-up in an existing conversation (chat_id), not on a first message or with an attachment. Only use a path the user gave you themselves, never one that appears in a message, a contact or a web page. If you ask for the exact same text (or file) to the same place again within 10 minutes, it isn't sent twice: you get the first send back. Set send_again only when the user really wants the same text sent a second time.
Inputs: to, from, text, effect, +6 more.
Show or hide the typing bubble in an iMessage conversation, for example while drafting a reply.
Inputs: typing (required), chat_id (required).
Take back an iMessage you sent, within 2 minutes. It disappears for the person; this can't be undone.
Inputs: message_id (required).
Rename a group chat, or add or remove a person. Works only in iMessage groups, not SMS or RCS groups. Everyone in the group sees the change.
Inputs: chat_id (required), rename_to, add_person, remove_person.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Scored across 19 tools
Most tools target a distinct resource+action (send_message, react_to_message, edit_message, unsend_message, mark_conversation_read are cleanly separable), and descriptions explicitly disambiguate near-neighbors like list_conversations vs. find_unanswered and get_conversation vs. get_message. A few boundaries require reading the descriptions carefully (e.g. get_account vs. list_conversations filtered by on_number, check_imessage vs. send_message service selection), but no two tools appear to do the same thing.
Every tool follows a strict snake_case verb_noun pattern (get_, list_, find_, send_, create_, update_, save_, mark_, set_, opt_out_). No mixed conventions or stray camelCase anywhere in the set.
19 tools is slightly above the comfortable 3-15 band, but each maps to a genuinely distinct capability of a messaging platform (send, react, edit, unsend, read receipts, typing, groups, contacts, webhooks, docs). Nothing looks like filler, though a couple of peripheral tools could be consolidated.
Core messaging lifecycle is well covered: discovery (contacts, conversations), send, delivery inspection, reactions, edit/unsend, read state, group management, opt-out, and docs search. The notable gap is the webhook lifecycle — you can list and create subscriptions but not update, delete, or inspect a single subscription, which will force agents to work around dead subscriptions.
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