# Eclipse Constellation MCP (pypi · eclipse-constellation)

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

- Trust score: 71/100 (medium)
- Change this week: +10
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-04

## Components

- pypi · `eclipse-constellation`: 71/100 (this document), [markdown](https://verifymcp.io/servers/cyan-eclipse-technologies-llc-constellation/eclipse-constellation.md), [page](https://verifymcp.io/servers/cyan-eclipse-technologies-llc-constellation/eclipse-constellation)

## Channel facts

- Registry: `pypi`
- Package: `eclipse-constellation`
- Version: `0.1.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-04.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 71/100
  - Repository check failed: the declared repository URL redirects; it must resolve directly.
  - Cryptographically verified build provenance (signed, bound to CYAN-ECLIPSE-TECHNOLOGIES-LLC/eclipse-constellation-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 7 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 62/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 272 tokens (~54/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the Eclipse Constellation MCP server?

Eclipse Constellation MCP runs locally as a PyPI package, launched with uvx eclipse-constellation. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add cyan-eclipse-technologies-llc-constellation -- uvx eclipse-constellation
```

### Cursor

```json
{
  "mcpServers": {
    "cyan-eclipse-technologies-llc-constellation": {
      "command": "uvx",
      "args": [
        "eclipse-constellation"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cyan-eclipse-technologies-llc-constellation": {
      "command": "uvx",
      "args": [
        "eclipse-constellation"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add cyan-eclipse-technologies-llc-constellation -- uvx eclipse-constellation
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cyan-eclipse-technologies-llc-constellation": {
      "type": "local",
      "command": [
        "uvx",
        "eclipse-constellation"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cyan-eclipse-technologies-llc-constellation --command uvx --arg eclipse-constellation
```

### Hermes

```yaml
mcp_servers:
  cyan-eclipse-technologies-llc-constellation:
    command: "uvx"
    args: ["eclipse-constellation"]
```

### Netclaw

```json
{
  "McpServers": {
    "cyan-eclipse-technologies-llc-constellation": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "eclipse-constellation"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add cyan-eclipse-technologies-llc-constellation -t stdio -c uvx -a eclipse-constellation
```

### Other

```json
{
  "mcpServers": {
    "cyan-eclipse-technologies-llc-constellation": {
      "command": "uvx",
      "args": [
        "eclipse-constellation"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-03 (score 71, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-11-02 (score 56, −15)

- [security regression] Malware scan: pass → unverified

### 2026-10-29 (score 71, +10)

- [security regression] Source repository: pass → fail
- [security improvement] Malware scan: unverified → pass

### 2026-10-27 (score 61)

First indexed and scored.

## MCP tools (5)

### `target_list` (~38 tokens)

List DECLARED targets only (name, kind, address, declared channel, owner agent, desk, declared resources). Undeclared targets are invisible.

### `policy_evaluate` (~96 tokens)

Evaluate a lifecycle action against policy — evaluation ONLY, nothing executes (v0.1 is observe-only). Returns ALLOW/DENY + reasons + per-check results; every evaluation is receipted, DENYs included. Args: actor {agent, desk}, target, action, params.

Input parameters:

- `action` (string, required)
- `actor` (object, required)
- `params` (object)
- `target` (string, required)

### `probe_target` (~68 tokens)

Run read-only probes against a DECLARED target over its declared channel. Probes are FIXED templates chosen by name (identity, uptime, disk, memory, services) — there is no free-form command argument, by law.

Input parameters:

- `probes` (array)
- `target` (string, required)

### `fleet_snapshot` (~27 tokens)

Probe every declared target and store a receipted fleet snapshot with per-target status and freshness.

### `receipt_list` (~43 tokens)

List ledger receipts (evaluations incl. DENYs, probes, snapshots) and verify the hash chain.

Input parameters:

- `limit` (integer)
- `type` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/cyan-eclipse-technologies-llc-constellation/eclipse-constellation#diagnostics

## Score history

- 2026-11-04: 71
- 2026-11-03: 71
- 2026-11-02: 56
- 2026-11-01: 71
- 2026-10-31: 71
- 2026-10-30: 71
- 2026-10-29: 71
- 2026-10-28: 61
- 2026-10-27: 61

## Common questions

### What is the Eclipse Constellation MCP server?

Eclipse Constellation MCP is listed in the public MCP registry as io.github.CYAN-ECLIPSE-TECHNOLOGIES-LLC/constellation. The governed, vendor-neutral VM fleet layer for agents: one policy, one receipt ledger, every cloud. This page covers its PyPI package (eclipse-constellation).

### Is the Eclipse Constellation MCP server safe to use?

Eclipse Constellation MCP scores 71 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 4 November 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Eclipse Constellation MCP server expose?

Eclipse Constellation MCP exposes 5 tools: target_list, policy_evaluate, probe_target, fleet_snapshot, receipt_list. Their descriptions and schemas cost roughly 272 tokens of context every time the server is loaded.

### Is the Eclipse Constellation MCP server still maintained?

Eclipse Constellation MCP is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Eclipse Constellation MCP server under?

Eclipse Constellation MCP declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/eclipse-constellation/
- Socket report: https://socket.dev/pypi/package/eclipse-constellation
- Website: https://eclipsebazaar.com/
- Changelog RSS feed: https://verifymcp.io/servers/cyan-eclipse-technologies-llc-constellation/eclipse-constellation.xml
- Changelog JSON feed: https://verifymcp.io/servers/cyan-eclipse-technologies-llc-constellation/eclipse-constellation.json
- HTML version of this page: https://verifymcp.io/servers/cyan-eclipse-technologies-llc-constellation/eclipse-constellation