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polaris: Agent for Claude Code

.claude/agents/constructor.md

constructor is an agent for Claude Code from BeyondTheProtocol/polaris. It costs 36 tokens per session (1,828 once invoked), scanned A, original, AGPL-3.0.

An agent that creates a new specialised mini-system from a stated goal by instantiating a predefined constellation template.

In plain words
What is it for?
It is for turning a goal into a new agent-based system using an existing template.
Why use it?
It reduces the setup work needed to create a coordinated group of specialised agents.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is BeyondTheProtocol/polaris's own configuration. It tells Claude Code how to work on polaris itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything polaris configures →

not rated 49repo 21d ago A scan 36 tokens AGPL-3.0
View source ↗ BeyondTheProtocol/polaris
Reuse

Borrowing it

Nothing to install: this file belongs to BeyondTheProtocol/polaris. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/BeyondTheProtocol/polaris/master/.claude/agents/constructor.md
Clone the repo
git clone --depth 1 https://github.com/BeyondTheProtocol/polaris

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 constructor

README.md
[![agentmods](https://agentmods.dev/badge/agents/beyondtheprotocol/polaris/constructor/github.svg)](https://agentmods.dev/agents/beyondtheprotocol/polaris/constructor)
Your own site
<a href="https://agentmods.dev/agents/beyondtheprotocol/polaris/constructor"><img src="https://agentmods.dev/badge/agents/beyondtheprotocol/polaris/constructor/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 constructor

Your own site · 80×15
<a href="https://agentmods.dev/agents/beyondtheprotocol/polaris/constructor"><img src="https://agentmods.dev/badge/agents/beyondtheprotocol/polaris/constructor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,828 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 unknown 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 $0.00036 $0.01828
Opus 5.5 $0.00014 $0.00731
Sonnet 5.5 $0.00007 $0.00366
Haiku 4.5 $0.00004 $0.00183

Measured yesterday against content hash da1acb4fca03, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

constructor 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 yesterday.

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.

.claude/agents/constructor.md · 56 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. yesterday First seen · 56 lines · 36 tokens per session scan A da1acb4fca03

Subscribe to this mod's changes

constructor is an agent published in the GitHub repository BeyondTheProtocol/polaris (49 stars, last pushed 21d ago), licensed AGPL-3.0. It adds 36 tokens to every session and 1,828 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-11-07.

Building agentsagentic-systemsai-agentscancer-researchllm-orchestrationopen-science
Related

constructor compared with agents from other repositories

constructor next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
constructorBeyondTheProtocol/polarisAgent4921d agoAGPL-3.0A36Claude Code
backlog-groomerApra-Labs/apra-fleetAgent106todaynoneA79Claude Code
doerApra-Labs/apra-fleetAgent106todaynoneA26Claude Code
integ-test-runnerApra-Labs/apra-fleetAgent106todaynoneA53Claude Code
deployerApra-Labs/apra-fleetAgent106todaynoneA23Claude Code
ci-watcherApra-Labs/apra-fleetAgent106todaynoneA22Claude Code
backend-developerOmar-Obando/qwen-orchestratorAgent534mo agoMITA23Claude Code