Eclipse Constellation MCP
The governed, vendor-neutral VM fleet layer for agents: one policy, one receipt ledger, every cloud and hypervisor underneath.
status: in-developmentclass: mcpInfrastructure / VM Fleet Governance
Vendor: Cyan Eclipse Technologies
What it does
- Declared-target registry: undeclared machines are invisible to every tool
- Policy engine transposed from Agent Wallet: per-desk and fleet quotas with refusal arithmetic, image and network allowlists, TTL + purpose discipline
- Mechanical snapshot-before-mutation precondition (stale snapshot receipt denies again)
- Tier-3 destructive operations approval-gated; in observe-only v0.1 they deny even with a snapshot
- Read-only probes over fixed command templates only — no free-form remote execution
- Append-only hash-chained ledger in which refusals are receipts too
Tools
target_list · policy_evaluate · probe_target · fleet_snapshot · receipt_list
Platforms
- MCP over stdio (HTTP transport on roadmap)
Certification
Bench verdict: CERTIFIED(local)
Certified scope: CERTIFIED(local) — Eclipse Bazaar Test Bench 2026-10-25, 15/16 checks pass, 1 na (U1 auth: stdio process boundary). Run by W-003 (Verity), suites/constellation.py.
Not tested:
- SSH channel live execution — untested by design: no sshd runs on this host, v0.1 declares no ssh target, and the Eclipse Connect droplet migration is owner-gated per spec. Probes were exercised over the declared 'local' channel only.
- All execution adapters (lifecycle, exec, console) — v0.1 is observe-only by design; no mutation code paths exist. Tier-3 evaluations cannot ALLOW in v0.1 (human approval channel not wired) — verified as designed in check K5.
Bench scorecard (evidence): https://eclipsebazaar.com/cards/eclipse-constellation-mcp-2026-10-25.json
Pricing
Free local v0.1; hosted tier TBD per spec
Install / verify
uvx eclipse-constellation
Official MCP Registry name: io.github.CYAN-ECLIPSE-TECHNOLOGIES-LLC/constellation
Registry listing: https://registry.modelcontextprotocol.io/v0.1/servers/io.github.CYAN-ECLIPSE-TECHNOLOGIES-LLC%2Fconstellation/versions/0.1.0
Repository: https://github.com/CYAN-ECLIPSE-TECHNOLOGIES-LLC/eclipse-constellation-mcp
Verify any MCP server in your client configs against this catalog with bazaar check (Eclipse Bazaar MCP / CLI — see llms.txt).