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ca-charter

ca-charter is a command for Claude Code from tractorjuice/arc-kit. It costs 76 tokens per session (2,058 once invoked), scanned A, original, no licence file.

A command for creating or working with a project charter through a defined process and authoritative reference.

In plain words
What is it for?
Use it when setting out a project's purpose, scope, decisions, or working approach.
Why use it?
It helps keep the request, process, source, and important notes in one structured record.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the arckit-ca plugin — 12 commands shipped together

not rated 2.3krepo +7 changed 9d ago A scan 76 tokens custom licence

Good fit Use it when setting out a project's purpose, scope, decisions, or working approach.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/tractorjuice/arc-kit/ca-charter
View source ↗ tractorjuice/arc-kit arckit.org
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/tractorjuice/arc-kit

Made for: Claude Code.

Or install arckit-ca, the plugin that ships this one along with the rest of its 12 commands.

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 ca-charter

README.md
[![agentmods](https://agentmods.dev/badge/commands/tractorjuice/arc-kit/ca-charter/github.svg)](https://agentmods.dev/commands/tractorjuice/arc-kit/ca-charter)
Your own site
<a href="https://agentmods.dev/commands/tractorjuice/arc-kit/ca-charter"><img src="https://agentmods.dev/badge/commands/tractorjuice/arc-kit/ca-charter/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 ca-charter

Your own site · 80×15
<a href="https://agentmods.dev/commands/tractorjuice/arc-kit/ca-charter"><img src="https://agentmods.dev/badge/commands/tractorjuice/arc-kit/ca-charter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,058 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 $0.00076 $0.02058
Opus 5.5 $0.00030 $0.00823
Sonnet 5.5 $0.00015 $0.00412
Haiku 4.5 $0.00008 $0.00206

Measured 9d ago against content hash 52b46c5e6982, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ca-charter 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 9d 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/arckit-ca/commands/ca-charter.md · 82 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 9d ago Changed · -3 lines · +9 tokens per session 52b46c5e6982
  2. 19d ago Changed · +4 lines 6026fccb3bea
  3. 2mo ago First seen · 81 lines · 67 tokens per session scan A 3495dc3e13d7

Subscribe to this mod's changes

ca-charter is a command published in the GitHub repository tractorjuice/arc-kit (2,273 stars, last pushed 2d ago), with no licence file. It adds 76 tokens to every session and 2,058 once invoked, about $0.0003 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 2026-08-30.

Claude CodePlanningai-agentsai-governancearchitecture-decision-recordsarchitecture-governancearckit
Related

ca-charter compared with commands from other repositories

ca-charter next to 6 commands from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
ca-chartertractorjuice/arc-kitCommand2.3k2d agononeA76Claude Code
arckit.analyzetractorjuice/arckit-codexCommand184d agononeA17Claude Code
arckit.eu-cloud-sovereigntytractorjuice/arckit-codexCommand184d agononeA41Claude Code
arckit.wardleytractorjuice/arckit-codexCommand184d agononeA13Claude Code
arckit.at-nisgtractorjuice/arckit-codexCommand184d agononeA71Claude Code
arckit.dostractorjuice/arckit-codexCommand184d agononeA16Claude Code
arckit.nl-cloudtractorjuice/arckit-codexCommand184d agononeA40Claude Code