Eclipse Constellation MCP

Name: Eclipse Constellation MCP
Author: CYAN-ECLIPSE-TECHNOLOGIES-LLC

by CYAN-ECLIPSE-TECHNOLOGIES-LLCversion 0.1.1i★ –iRuns on your computer

Registry nameio.github.CYAN-ECLIPSE-TECHNOLOGIES-LLC/constellation

Install

Overview

Description from the maker (original English)

The governed, vendor-neutral VM fleet layer for agents: one policy, one receipt ledger, every cloud

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Accounting, finance & tax

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "constellation": {
      "command": "uvx",
      "args": [
        "eclipse-constellation"
      ]
    }
  }
}

Run this in your terminal

claude mcp add constellation -- uvx eclipse-constellation

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "constellation": {
      "command": "uvx",
      "args": [
        "eclipse-constellation"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "constellation": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "eclipse-constellation"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account CYAN-ECLIPSE-TECHNOLOGIES-LLC, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 1722 servers in this category
Published to the registry more recently than 78% of the other 1722 servers in this category
Basic checks equal to or better than 100% of the other 1722 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Eclipse Constellation MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.1) reached the registry 10 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Finance Toolkit

by JerBouma

500+ transparent financial methods calculated from raw statements, not third-party endpoints.

Computer or cloud★ 5,496MITUpdated yesterday

Install

SolidInvoice

by SolidInvoice

Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.

Runs in the cloud★ 981MITUpdated 7 days ago

Install

Korea Tax Calculator

by UpstageAI

Korean tax calculation and tax-audit judgment MCP: 96 tools with statutory citations.

Runs on your computer★ 97MITUpdated today

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Eclipse Constellation MCP

Powered by Cyan Eclipse Technologies — https://cetech.ai

Eclipse Constellation — the governed, vendor-neutral VM fleet layer for agents: one policy, one receipt ledger, every cloud and hypervisor underneath.

Why this exists

Every cloud and hypervisor now ships its own agent surface, and each one owns exactly its own estate. What none of them provides is the layer above: who may do what to a machine, under whose authority, within what limits — and the receipts to prove it afterwards. Constellation is that layer. It is the Agent Wallet pattern transposed from money to machines: policy is written by a human, checked *before* anything executes, and every decision is ledgered.

Status — honest labels

v0.1.0, spec phase C0+ (fleet state + policy evaluation). OBSERVE-ONLY: this build contains no mutation code paths at all. Nothing in this file can start, stop, resize, snapshot, or destroy a machine — lifecycle actions exist only as policy *evaluations* that return ALLOW/DENY with reasons. Local stdio transport, Python stdlib only. The only target probed is this host itself, over its declared channel. No certification claimed — bench pending.

Explicitly NOT in v0.1, by spec and by the build's safety brief:

No execution adapters. ALLOW is a policy verdict, not an action. Execution lands in phase C1+ behind an owner gate.
No Tier-3 ALLOW. Destroy, network changes, and snapshot deletion require explicit human confirmation every time; the approval channel is not wired in v0.1, so Tier-3 evaluations always DENY here, with the reason stated.
The Eclipse Connect droplet is NOT a declared target. Its migration (spec §6.4: declare → read → snapshot discipline → gated mutation) is owner-gated; v0.1 declares this VM only.

Tools (5)

Tool	What it does
`target_list`	Lists declared targets only: name, kind, address, declared channel, owner agent, desk, declared resources. Undeclared targets are invisible to every tool.
`policy_evaluate`	Evaluates a lifecycle action against policy — quotas (arithmetic shown on refusal), image + network allowlists, TTL + purpose discipline, the snapshot-before-mutation precondition, Tier-3 approval gating. Returns ALLOW/DENY + reasons + per-check results. Every evaluation is receipted, DENYs included. Evaluates only; never executes.
`probe_target`	Read-only probes against a declared target over its declared channel. Probes are fixed command templates chosen by name (`identity`, `uptime`, `disk`, `memory`, `services`). There is no free-form command argument — that is law in v0.1, enforced in the tool.
`fleet_snapshot`	Probes every declared target and stores a receipted fleet snapshot with per-target status, probe results, and freshness.
`receipt_list`	Lists ledger receipts (evaluations incl. DENYs, probes, snapshots) and verifies the append-only hash chain.

The registry doctrine

Targets are declared, never discovered or improvised: targets.json is the fleet's Device Registry. Each target declares its kind, address, channel (local for this host — it runs no sshd, and this build does not start one; ssh for future declared remote targets, via the system ssh client in batch mode), owner agent, desk, and declared resources. A target with no declared channel is inventory-only; the layer never invents one.

Shipped registry v0.1: one target, self-vm — this VM (2 vCPU / 8 GB declared). Declared-resource figures in targets.json and image hashes in policy.json are declared metadata: the image entries are named registry slots whose real hashes land when the first allowlisted images are registered at C1.

The policy core (spec §4, as evaluated)

Quotas are caps. Per-desk and fleet ceilings on vCPU, RAM, disk, VM count. A creation that would breach a cap is refused with the arithmetic in the reason string.
Image + network allowlists. Creations boot only from registered images (name, and hash when supplied); targets join only declared networks. A new network is a policy change, not a runtime flag.
Snapshot-before-mutation is mechanical. resize, image_change, exec_push, rollout, and destroy require a fresh snapshot receipt for the same target. No snapshot receipt, no mutation — checked, not advised.
Ephemeral by default. Creations require a purpose tag and a TTL within the policy ceiling (default 24h, ceiling 168h). Permanence is a human grant.
Identity is bound. Every evaluation names its actor (agent + desk). Anonymous evaluations are denied.
Receipts are the product. Append-only, hash-chained, GENESIS-anchored — evaluations, probes, and snapshots all land in the same ledger (data/state.json, overridable via env).

Snapshot-receipt binding (v0.1 semantics, stated plainly): until execution adapters land, a qualifying snapshot receipt is the ALLOW evaluation receipt of a snapshot_create action for the same target, fresh within policy.snapshot_fresh_seconds (24h). C1 adapters will record execution receipts of the same shape; the precondition check does not change.

Run it

python3 server.py            # MCP over stdio, stdlib only, no dependencies

python3 smoke.py # end-to-end smoke over real stdio (temp state) python3 -m unittest discover tests # test suite

Env overrides: ECLIPSE_CONSTELLATION_STATE, ECLIPSE_CONSTELLATION_TARGETS, ECLIPSE_CONSTELLATION_POLICY.

Roadmap (spec §8)

C1 — lifecycle execution under policy on the first declared adapter (owner-gated; the droplet migration is its own owner decision). C2 — exec + console layers over declared channels. C3 — a second substrate behind the same policy core, which is when the vendor-neutrality claim becomes testable, then sayable.

A Cyan Eclipse Technologies product. The "Powered by Cyan Eclipse Technologies" attribution travels with it.

Eclipse Constellation MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

Eclipse Constellation MCP

Why this exists

Status — honest labels

Tools (5)

The registry doctrine

The policy core (spec §4, as evaluated)

Run it

Roadmap (spec §8)