teach-charter

teach-charter is a skill for Claude Code from hereinthehive/gotrino-assistant. It costs 45 tokens per session (2,438 once invoked), scanned A, original, MIT.

A project setup skill for the Gotrino assistant. It learns the project's technology and records decisions about its scope and priorities in a configuration file.

In plain words
What is it for?
Setting up a project, migrating an old configuration file, documenting scope decisions, and updating those decisions later.
Why use it?
It gives the assistant project context and prevents repeated questions or unwanted advice about decisions the team has already made.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Part of the gotrino-assistant plugin — 18 skills, 1 agent shipped together

Good fit Setting up a project, migrating an old configuration file, documenting scope decisions, and updating those decisions later.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hereinthehive/gotrino-assistant/teach-charter
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 hereinthehive/gotrino-assistant --skill teach-charter
Clone the repo
git clone --depth 1 https://github.com/hereinthehive/gotrino-assistant

Made for: Claude Code.

Or install gotrino-assistant, the plugin that ships this one along with the rest of its 18 skills, 1 agent.

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 teach-charter

README.md
[![agentmods](https://agentmods.dev/badge/skills/hereinthehive/gotrino-assistant/teach-charter/github.svg)](https://agentmods.dev/skills/hereinthehive/gotrino-assistant/teach-charter)
Your own site
<a href="https://agentmods.dev/skills/hereinthehive/gotrino-assistant/teach-charter"><img src="https://agentmods.dev/badge/skills/hereinthehive/gotrino-assistant/teach-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 teach-charter

Your own site · 80×15
<a href="https://agentmods.dev/skills/hereinthehive/gotrino-assistant/teach-charter"><img src="https://agentmods.dev/badge/skills/hereinthehive/gotrino-assistant/teach-charter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,438 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 $0.00045 $0.02438
Opus 5 $0.00023 $0.01219
Sonnet 5 $0.00009 $0.00488
Haiku 4.5 $0.00005 $0.00244

Measured 10d ago against content hash a2d6e6906217, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

teach-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 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.

skills/teach-charter/SKILL.md · 387 lines

How it starts

The opening of the file, as written. The whole thing — 387 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Teach Charter (Setup & Configuration)

Help users set up the Gotrino assistant for their project, capturing context and scope decisions that reduce noise over time.

Migration preflight

Before anything else, check for the legacy config. If .inclusion-config.md exists in the project root and .assistant-config.md does not, rename it silently:

mv .inclusion-config.md .assistant-config.md

Note the migration in the output: Migrated: .inclusion-config.md → .assistant-config.md.

If both files exist, keep .assistant-config.md and leave the legacy file — the user will resolve.

See references/config-migration.md for the full migration contract.


Philosophy

This plugin should be a conversation, not a lecture.

Users make conscious decisions about scope. If they've decided "we're US-only," we shouldn't nag them about i18n every time. But we should:

  • Record the decision with rationale
  • Make it easy to revisit later
  • Never let core dignity principles be disabled

What This Skill Does

  1. Discovers project context (stack, existing tooling)
  2. Asks about scope and priorities
  3. Creates .assistant-config.md with decisions documented
  4. Enables future checks to respect those decisions

Process

1. Detect Project Context

Scan for:

  • package.json, requirements.txt, Gemfile, etc. → Stack
  • react-intl, i18next, gettext → i18n setup
  • eslint-plugin-jsx-a11y, axe-core → a11y tooling
  • Test directories → Where fixtures live
  • Docs directories → Where documentation lives
  • decisions/, docs/decisions/, docs/adr/ → Where decision records live

2. Present Findings for Correction

Show what was detected and let user correct:

## Project Analysis

### Detected (correct if wrong)

| Setting | Detected | Correct? |
|---------|----------|----------|
| Framework | React 18 | |
| i18n setup | None detected | |
| a11y tooling | eslint-plugin-jsx-a11y | |
| Test location | src/__tests__/ | |
| Docs location | docs/ | |
| Decisions location | decisions/ | |
| Task management | None detected | |

Read the full file on GitHub · 387 lines

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 · 387 lines · 45 tokens per session scan A a2d6e6906217

Subscribe to this mod's changes

teach-charter is a skill published in the GitHub repository hereinthehive/gotrino-assistant (5 stars, last pushed 4mo ago), licensed MIT. It adds 45 tokens to every session and 2,438 once invoked, about $0.0002 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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