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sno-ai

Charter skill

Write, revise or review a charter: the one document that tells an executor what to deliver, what is out of bounds, what the owner already decided, and how each success check will be proven. Use when work needs a written brief before someone else does it, or when asked to write, change or check a charter.

$npx skills add sno-ai/sno-station-skills --skill charter
View this skill on GitHubsno-ai/sno-station-skills/plugins/sno-station-standalone/skills/charter/SKILL.md
Pack stars
864
Pack installs
1
Alyn Score
45/99
Updated
6 days ago
License
Apache-2.0
– views – installs via Alyn

Install Charter

Pick your agent. Every command is ready to paste.

$npx skills add sno-ai/sno-station-skills --skill charter

The open skills CLI detects your agents (Claude Code, Cursor, Codex and 70+ more) and installs to the right folder. Add -g to install globally.

01

Install it

Run the command above, or upload the folder in Claude.

02

Ask naturally

Describe the task. Your agent loads charter when the request matches its description.

03

Name it if needed

If it does not trigger, say “use the charter skill”. In Codex, type $charter.

The skill itself

SKILL.md

FolderGitHub

charter

A charter is one markdown file that says what to deliver and how everyone will know it was delivered. A task is named by its charter filename. charter writes it; deliver carries a released charter out. Any kind of project uses it: software, documents, campaigns, research, operations. The owner is whoever owns the work (often the user); speak to them in the language they use.

Prerequisites: none to use it; its selftest needs bash and python3.

Read references/template.md for the file layout and references/questions.md before asking the owner anything.

Rules that keep a charter useful

  • Preserve the owner's words and decisions. Never invent a decision, a fact or a requirement. A missing choice that would change the outcome is asked once, one question at a time, at the end of a message; independent work continues while it waits, and silence is not approval.
  • Read the existing work first (files, documents, data, earlier decisions). Ask nothing they already answer.
  • Every success check names what will be observed, where, and how, and can be answered pass or fail by a real run or inspection. The expected result comes from the requirement or from independent data, never from pasting the program's own output. For a defect, the check reproduces the defect first.
  • Before adding a precondition, check, section or approval step, name the failure it detects and what would change if it failed. If nothing changes, leave it out. By default no checksums, sign-off records, warm-up runs, baselines, fixed snapshots or report formats are entry conditions.
  • By default a security check, a full test suite or a full evaluation enters a charter only if the owner names it. Propose it as a question that says what it would check and what it would block; do not write it in as a requirement on your own judgment. A project may choose otherwise.
  • Say what happens on failure: which operation is logged with its error, what continues. A record or report failure never disables the main result; a real failure stays a failure.
  • Time is finite. A check that takes long states its expected duration from existing timings; by default no full suites unless the owner asks.
  • State what the executor may not do without the owner: publish, send to other people, spend, delete, overturn a recorded decision.

Write

  1. Read the request, adjacent notes and the existing work. Cite settled decisions without copying or locking their source. When the work depends on a third-party product, service or version, read its current official documentation and record the facts that constrain the work with the page and version.
  2. Draft Owner decisions, Outcome, Scope and non-goals, and Success checks from the template. Length follows the work: a few lines for a small task, a sliced charter (named slices, each with its own checks) for a big one. There is one kind of charter, not sizes.
  3. Read it as the executor: for each check, could someone tell pass from fail without asking? Walk one real example through it. Fix the gaps that would make the result fail. Do not run the future work to plan it.
  4. One independent review for the owner's intent and concrete defects (peer-review when it is installed, otherwise a second agent). Fix material findings; no second round unless the owner asks.
  5. Tell the owner what the charter will deliver and any genuine open decision, in plain words, ending with the one question. After the owner approves, set status: released and hand the path to the executor, or to whoever supervises the work.

By default an agent alone never releases a charter: it records the owner's decisions. When the owner is away, leave the charter as a draft for them to release; a project may choose otherwise.

Revise

A scope change updates the affected decisions and checks in the same edit, sets updated, and leaves the rest alone. A replaced charter gets status: superseded and a pointer to its successor. Delivery records delivered only through deliver; never infer it from the header.

Review only

Read the charter and the affected work. Report concrete mismatches, their consequences and the smallest corrections in one local file; do not edit the reviewed charter. Questions go in the conversation. Applying accepted corrections is Revise.

Tips for Charter

  • • Start a fresh session after installing so your agent picks up the new skill.
  • • This skill ships scripts. Read them before the first run, and run it in a project without secrets first.
  • • It bundles reference files. The agent reads them only when needed, so they cost no context until then.
  • • It is part of a pack with 21 skills. Install only the ones you need with --skill to keep triggers precise.
  • • If two skills overlap, mention the one you want by name.

Questions about Charter

What does the Charter skill do?

Write, revise or review a charter: the one document that tells an executor what to deliver, what is out of bounds, what the owner already decided, and how each success check will be proven. Use when work needs a written brief before someone else does it, or when asked to write, change or check a charter.

How do I install Charter?

Run "npx skills add sno-ai/sno-station-skills --skill charter" in your project. The skills CLI installs it for Claude Code, Cursor, Codex and 70+ other agents. In Claude on the web, upload the skill folder as a ZIP under Customize > Skills.

Does Charter work in Cursor and Codex?

Yes. Charter uses the open SKILL.md format, so it works in Claude Code, Claude, Cursor, OpenAI Codex, Gemini CLI, GitHub Copilot and other agents that support agent skills.

Is Charter free?

Charter is open source on GitHub under the Apache-2.0 license. It is free to install; check the license before commercial use.

Who made Charter?

Charter is published by sno-ai in the sno-ai/sno-station-skills repository, together with 20 other skills.

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