constellation-board

constellation-board is a skill for Claude Code from SoliEstre/EstreGenesis. It costs 90 tokens per session (348 once invoked), scanned A, original, Apache-2.0.

A read-only view of the live Constellation work board, showing agents, work tracks, decisions, and message history.

In plain words
What is it for?
Use it to check which agents are active, inspect board settings and decisions, and review recent messages.
Why use it?
It gives an agent the current shared context before it reports or sends a message, reducing duplicated work and conflicting updates.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the constellation plugin — 10 skills, 1 hook shipped together

Good fit Use it to check which agents are active, inspect board settings and decisions, and review recent messages.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/soliestre/estregenesis/constellation-board
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.

Any agent
npx skills add SoliEstre/EstreGenesis --skill constellation-board
Clone the repo
git clone --depth 1 https://github.com/SoliEstre/EstreGenesis

Made for: Claude Code.

Or install constellation, the plugin that ships this one along with the rest of its 10 skills, 1 hook.

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-board

README.md
[![agentmods](https://agentmods.dev/badge/skills/soliestre/estregenesis/constellation-board/github.svg)](https://agentmods.dev/skills/soliestre/estregenesis/constellation-board)
Your own site
<a href="https://agentmods.dev/skills/soliestre/estregenesis/constellation-board"><img src="https://agentmods.dev/badge/skills/soliestre/estregenesis/constellation-board/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-board

Your own site · 80×15
<a href="https://agentmods.dev/skills/soliestre/estregenesis/constellation-board"><img src="https://agentmods.dev/badge/skills/soliestre/estregenesis/constellation-board.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 348 The whole file, excluding the scripts and references it only reads on demand.
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.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00090 $0.00348
Opus 5 $0.00045 $0.00174
Sonnet 5 $0.00018 $0.00070
Haiku 4.5 $0.00009 $0.00035

Measured 10d ago against content hash 8b79adeb70c6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

constellation-board 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 10d 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/skills/constellation-board/SKILL.md · 29 lines

What it actually says

Read the Constellation board

Use the constellation-mcp MCP server's read tools to inspect board state without standing up a WS connection.

When to invoke

  • "What agents are currently on the board?" → agent_list_get
  • "What's the current state.json?" → board_state_get (modes, channels, decisions, keys)
  • "What did agent X say recently?" → board_history_tail(channelId, sinceCursor)

Output discipline

  • Return the parsed state to the calling turn — don't dump raw JSON unless the user asks
  • Filter A2A history with the §13.16.9 v2.5.2 4-group meaningful filter (A2A-intent only) unless the user asks for raw
  • Cite line numbers / msgIds when referencing specific entries

Composition

Pairs with constellation-a2a-emit (write) and constellation-start (lifecycle). Read first, decide, then emit — the §13.16.10 pre-send probe discipline applies to MCP write too.

Spec source

Constellation.md §8 (MCP integration spec) — read interface at §8.2.

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. 10d ago First seen · 29 lines · 90 tokens per session scan A 8b79adeb70c6

Subscribe to this mod's changes

constellation-board is a skill published in the GitHub repository SoliEstre/EstreGenesis (8 stars, last pushed 3d ago), licensed Apache-2.0. It adds 90 tokens to every session and 348 once invoked, about $0.0005 per session on Opus 5. 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.

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