constellation

constellation is a plugin for Claude Code from SoliEstre/EstreGenesis. Its manifest loads nothing; the 10 skills, 1 hook it bundles cost 1,057 tokens per session together, scanned A, original, Apache-2.0.

A multi-agent coordination plugin that provides messaging, a WebSocket server, a dashboard, session helpers, and shared room artifacts. It lets several coding agents coordinate work and keep shared decisions and board state.

In plain words
What is it for?
Use it to run coordinated agent rooms, exchange messages, manage session lifecycles, keep decision records and summaries, and track work through a shared board.
Why use it?
It reduces confusion when multiple agents are working together by tracking messages, acknowledgements, decisions, summaries, and task stages.

Plugin for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Good fit Use it to run coordinated agent rooms, exchange messages, manage session lifecycles, keep decision records and summaries, and track work through a shared board.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add SoliEstre/EstreGenesis
/plugin install constellation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/SoliEstre/EstreGenesis

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for constellation

README.md
[![agentmods](https://agentmods.dev/badge/plugins/soliestre/estregenesis/constellation/github.svg)](https://agentmods.dev/plugins/soliestre/estregenesis/constellation)
Your own site
<a href="https://agentmods.dev/plugins/soliestre/estregenesis/constellation"><img src="https://agentmods.dev/badge/plugins/soliestre/estregenesis/constellation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for constellation

Your own site · 80×15
<a href="https://agentmods.dev/plugins/soliestre/estregenesis/constellation"><img src="https://agentmods.dev/badge/plugins/soliestre/estregenesis/constellation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 10 skills, 1 hook cost 1,057 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

constellation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/constellation/.claude-plugin/plugin.json · 21 lines

How it starts

The opening of the file, as written. The whole thing — 21 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "constellation",
  "version": "0.3.46",
  "description": "Live multi-agent orchestration: WebSocket server + A2A messaging + dashboard + Stop hook helper + MCP server (full Phase 2 impl: WS proxy + 5 tools incl. a2a_wait_ack 3-tier + session-lifecycle + §13.13.2 dedup + chunked transfer reassembly). v0.3.29 / Constellation v2.4.57 — room artifacts + board state schema: the reference server holds three pinned artifacts per room (header · append-only decision ledger rd-N with supersedes · running summary with covers_until) behind the symmetric fetch contract (RequestRoomArtifacts → RoomArtifacts) and the new write path RoomArtifactsUpdate (participants/board only, server-stamped editor/versions, delta broadcast under a single ack-by-reference artifacts version); dashboard room tabs gain a collapsible 📌 pinned block (esc-only, auto-fetch on entry, TDZ-guarded) and the scribe charter the room-digest duty; §13.31 (new) canonicalizes the board state contract — current[].stages {label, status: pending|active|done} + sub/blockedBy + a five-point usage discipline — with matching hooks in /roundnext (start-with-stages), /boardsweep (§13.31 as the consumer contract), and /roundtable (D5 fetch/write); roundtable smoke 18→22 checks. v0.3.28 = boardsweep renderer-contract clause (adopter-measured gap: a stages list written as {name,state} against a {label,status} renderer survived two sweeps rendering all-PENDING — schema normalization now checks field keys/value domains against the consumer contract, since render fallbacks silently swallow this class; deterministic state lint preferred where present). v0.3.27 / Constellation v2.4.53 — roundtable topic rooms (§13.30): multi-party rooms (3+ participants, agents + humans) with a two-layer split — the server enforces the deterministic floor (fan-out over existing 1:1 relay, autoHop chain cap with parking, per-agent rate + consecutive caps, stall detection, human soft-yield priority, advisory floor state, notice-class su

Read the full file on GitHub · 21 lines

Contents

What it installs

The manifest is a name and a version. 10 skills, 1 hook travel with it, and installing the plugin installs all of them — 1,057 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed f68775a93265
  2. 1mo ago Changed 1c11cb57c209
  3. 1mo ago Changed 94132806f9e4
  4. 1mo ago First seen · 21 lines scan A 654b10cbb817

Subscribe to this mod's changes

constellation is a plugin published in the GitHub repository SoliEstre/EstreGenesis (8 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.