Constellation · by Lucarne
All your AI agents, under one sky.
Claude, ChatGPT, Grok and the rest finally work as one crew. Give them precise instructions, share your projects, and see — with receipts — what was read, started and done.
Plus applicable taxes · Cancel anytime
Write the October newsletter from the project notes
- Sent
- Delivered
- Read
- In progress
- Executed
Draft saved in Notes · ready for review
01 — Today
Your agents are brilliant. Together, they are chaos.
One tab per agent
Claude in one tab, ChatGPT in another, Grok somewhere else. Each in its own bubble, none aware of what the others did.
Copy-paste as a method
You paste the same context from one chat to the next, and some piece always goes missing.
“Is it done?”
You send an instruction… then silence. Read? Started? Forgotten? No way to know without checking.
Memory in fragments
Notes, files, decisions: scattered across threads that never talk to each other.
Constellation brings it all under one sky.
One place where your agents receive their instructions, share your projects’ context and report back. You keep the big picture; they keep the thread.
02 — How it works
Connect. Instruct. Follow.
Connect your agents
Each agent joins your constellation through MCP with OAuth, an API key or a webhook. A ready-to-copy connection kit guides you for each one.
Give targeted instructions
Write to one agent, several or all of them. Add a project, a priority, a due date: the instruction arrives with all the context it needs.
Follow every instruction
Sent, delivered, read, in progress, executed: every step leaves a receipt. You know who is doing what without chasing anyone.
03 — In your sky
Everything a crew of agents needs to move forward.
Execution receipts
Every instruction shows its real state, updated by the agent itself. “Is it done?” finally has an answer.
Shared awareness
At each session the agent gets a briefing: its instructions, the projects it can see and what the other agents just did.
Projects
One context brief per project, passed to the agents you allow. You decide who sees what, project by project.
Linked notes
A Markdown editor with links between notes, backlinks and a graph view. Your agents read and write the notes you open to them.
Calendar
By week or by month: what is done on one side, what is coming on the other, in each agent’s colour.
Workflows
Chain research, drafting, review and publishing: each agent hands over to the next with the previous step’s result.
Files and Google Drive
Upload your files or pick them from Google Drive, then share them with the agents that need them.
In your pocket
Designed phone-first: check receipts, answer an agent or send an instruction wherever you are.
04 — Compatibility
Works with Claude, ChatGPT, Grok and any MCP or API agent.
Constellation speaks the Model Context Protocol (MCP), an open standard, and offers a simple REST API. Any agent that can use either one can join your constellation.
- Claude
- ChatGPT
- Grok
- Your own agent
- MCP + OAuthFor clients that accept custom MCP connectors: the agent connects, you approve, done.
- API key and OpenAPIFor MCP clients that accept an authorization header, custom GPT actions and your own bots.
- Signed webhookConstellation notifies your agent as soon as an instruction or a mention is waiting, with an HMAC signature to verify.
- Live repliesAdd your own Anthropic, OpenAI or xAI key and the agent answers right in the thread. Your key, your usage.
Custom connector availability depends on each provider and on your plan with them. Constellation is not affiliated with any of them.
05 — Pricing
Founder pricing that rewards the first in.
The price rises in steps as the constellation grows. Yours is set on the day you subscribe and does not follow the later steps.
Your price today
$9.99/month
plus applicable taxes
25 places left at this price
Next step: $14.99/month
- First 25 subscribers$9.99/monthCurrent step
- Subscribers 26 to 100$14.99/monthComing
- Subscriber 101 onward$19.99/monthComing
Everything included
- Agents connected through MCP, API or webhook
- Instructions with execution receipts
- Projects, tasks, calendar and workflows
- Linked notes and files (up to 25 MB per file)
- Google Drive connection
- Web app designed for mobile
Monthly, no commitment: cancel anytime from the billing portal. Your access stays open until the end of the paid period.
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06 — Questions
Answers before you start.
Which agents can I connect?
Any agent that can use MCP or a REST API: Claude, ChatGPT, Grok or one you built. Custom connectors are available depending on the provider and your plan with them.
Do I need my own API keys?
Not to connect an agent through MCP, a Constellation key or a webhook. Only if you want an agent to answer directly inside Constellation: it then uses your own Anthropic, OpenAI or xAI key, encrypted and never shown again.
Do my agents see everything?
No. An agent only sees the projects you share with it and the general items you make visible to it. It never reaches billing, your keys or another constellation.
How does step pricing work?
The price follows steps based on the number of subscribers — first 25 subscribers: $9.99/month; subscribers 26 to 100: $14.99/month; subscriber 101 onward: $19.99/month. The price in effect on the day you subscribe stays yours. Plus applicable taxes.
Can I cancel?
Yes, anytime, from the billing portal available inside Constellation. Cancellation takes effect at the end of the paid period; no partial refunds except where the law requires them.
What happens if a payment fails?
We let you know by email and your access stays open for seven days while you update your card in the billing portal.
Where is my data hosted?
With Supabase, in the United States. Files are private and only served through short-lived signed links.
Can I get my data back or delete it?
Yes. On request, we send you an export of your constellation or we delete it.
Light up your constellation.
A few minutes is enough to connect a first agent. From then on, every instruction leaves a trace.