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Agent skill

Validation Supervision

by kunchenguid in kunchenguid/firstmate

Load when a ship starts or already has an active no-mistakes validation run, including a mid-run requirement change or finding, and before deciding or answering any ask-user finding.

MITAuto-check passed

Install Validation Supervision

skills CLI
$ npx skills add kunchenguid/firstmate --skill validation-supervision -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install kunchenguid/firstmate validation-supervision --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/kunchenguid/firstmate.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/validation-supervision .claude/skills/validation-supervision && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
validation-supervision
GitHub stars
7.6k
Token cost
~953 tokens
SKILL.md length
505 words
Files
1
Skills in repo
29
Repo updated
First seen
Licence
MIT

At a glance

Load when a ship starts or already has an active no-mistakes validation run, including a mid-run requirement change or finding, and before deciding or answering any ask-user finding.

  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Validation Supervision is an agent skill from kunchenguid/firstmate. Load when a ship starts or already has an active no-mistakes validation run, including a mid-run requirement change or finding, and before deciding or answering any ask-user finding.

Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Talk to one agent. Ship with a crew. The licence is MIT.

Example prompts

  • “/validation-supervision”

What it can do on your machine

Read from SKILL.md and the folder at commit 53b5bc1. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Validation Supervision loads about 953 tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 505 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~51
When it runs · the whole SKILL.md, loaded when a task matches
~953

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from kunchenguid/firstmate at commit 53b5bc1, republished under its MIT licence (© kunchenguid). 505 words, ~953 tokens.

Download SKILL.mdSave it as .claude/skills/validation-supervision/SKILL.md (or your agent's skills folder).
name
validation-supervision
description
Load when a ship starts or already has an active no-mistakes validation run, including a mid-run requirement change or finding, and before deciding or answering any ask-user finding.
user-invocable
false
metadata.internal
true

Validation supervision

For a no-mistakes ship, trigger validation on the same worker after its implementation commit, using the harness invocation owned by harness-adapters. The task worker that starts a no-mistakes run drives the pipeline and owns every no-mistakes axi run and no-mistakes axi respond call through the next gate or outcome. Firstmate never invokes no-mistakes axi respond for a crew-owned run. bin/fm-dod-lib.sh owns the worker-side --intent contract. Once validation starts, prefer routing new requirements to follow-up work rather than expanding the current task, unless a new requirement completely invalidates the work being validated; however, the smallest downstream changes needed to keep already accepted product or engineering behavior correct, add behavioral tests where an executable contract exists, or keep documentation accurate remain within the current task even when they touch files not named at intake, and corrections required to satisfy already accepted intent are not new requirements.

Only a current, explicit captain instruction that completely invalidates the work being validated keeps the task with the same worker instead of routing it to follow-up work or handing it to a replacement. That worker cancels the active run through no-mistakes axi's supported abort command and confirms through axi status that the run has stopped before changing any code. The worker then follows branch_sync.next_action from structured axi status: use axi sync's supported guarded recovery only when its code is recover_custody, and otherwise proceed only when structured status confirms that branch ownership is already returned and no recovery is required. Custody recovery settles branch ownership, not content: the worker must replace the obsolete work from the correct pre-invalidation base rather than building on top of the recovered-but-obsolete head, keeping the obsolete run's own pipeline-fix commits out of what gets validated and shipped. Apart from that single supported abort, do not hand-edit, commit, restart, or start a second validation run while the obsolete run still owns the branch. Once ownership is settled, validate exactly once against that final head so no obsolete or intermediate head is ever treated as authoritative.

Show full SKILL.md (171 more words)Show less

An ask-user finding returns as needs-decision; firstmate loads ask-user-authority and either decides or escalates per that skill. Send the same worker one exact decision naming the decision key, step, action, affected finding IDs, instructions where needed, and exact response command, passing --resolve-key so the worker's open decision record closes at answer time. Require the matching resolved event, forbid --yes, and require the worker to process every synchronous return until completion or a genuinely new escalation. Resume fleet supervision immediately after the decision lands.

Judge validation by the resolved state line from bin/fm-crew-state.sh, whose header owns outcome mappings and CI-monitor/daemon exceptions, never by shell liveness, the last status event, or a raw run record. Workers parked at approval or fix-review must follow the active gate help. A worker hand-editing, committing, aborting, or restarting during an active validation run duplicates pipeline ownership outside the supersession sequence above; steer it back to the gate response flow. The worker reports the PR when CI first becomes green rather than waiting for merge monitoring to finish.

© kunchenguid, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/validation-supervision of kunchenguid/firstmate.

Open the folder on GitHubat commit 53b5bc1

Compare with similar skills

Validation Supervision next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Validation Supervision compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Validation Supervision this skillkunchenguid/firstmate7.6k—~953Automated safety check: PassMIT
Shipsimstudioai/sim30k—~4.1kAutomated safety check: PassApache-2.0
StartDonchitos/Claude-Code-Game-Studios26k—~6.4kAutomated safety check: PassMIT
Ship Itvectorize-io/hindsight46k—~1.9kAutomated safety check: PassMIT
Ship Workflowgarrytan/gstack136k—~20kAutomated safety check: NotesMIT
Shipmillionco/react-doctor15k—~716Automated safety check: PassCustom licence

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Questions about Validation Supervision

What does Validation Supervision do?

Load when a ship starts or already has an active no-mistakes validation run, including a mid-run requirement change or finding, and before deciding or answering any ask-user finding. Validation Supervision is an agent skill from kunchenguid/firstmate. Load when a ship starts or already has an active no-mistakes validation run, including a mid-run requirement change or finding, and before deciding or answering any ask-user finding.

How do I install Validation Supervision in Claude Code?

Run `npx skills add kunchenguid/firstmate --skill validation-supervision -a claude-code`. Or copy the skill folder (.agents/skills/validation-supervision in kunchenguid/firstmate) into .claude/skills/validation-supervision in your project. Claude Code loads it when a task matches its description.

How do I install Validation Supervision in Codex?

Run `npx skills add kunchenguid/firstmate --skill validation-supervision -a codex`. Or copy the skill folder (.agents/skills/validation-supervision in kunchenguid/firstmate) into .agents/skills/validation-supervision in your project. Codex loads it when a task matches its description.

Can I use Validation Supervision in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add kunchenguid/firstmate --skill validation-supervision -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/validation-supervision, .gemini/skills/validation-supervision, .github/skills/validation-supervision and .opencode/skills/validation-supervision in your project.

What does Validation Supervision need to run?

SKILL.md names no scripts, command-line tools or credentials: Validation Supervision is instructions for the agent only.

Does Validation Supervision access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Validation Supervision safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Validation Supervision use?

Validation Supervision is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Validation Supervision use?

About 953 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Validation Supervision?

Skills that share tags, products or a category with Validation Supervision: Ship (simstudioai/sim, 30k stars), Start (Donchitos/Claude-Code-Game-Studios, 26k stars), Ship It (vectorize-io/hindsight, 46k stars) and Ship Workflow (garrytan/gstack, 136k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Validation Supervision?

kunchenguid (a GitHub user) maintains it in kunchenguid/firstmate, which has 7,622 GitHub stars. The repository holds 29 skills in this directory. The repository was last updated on October 7, 2026.

Source: kunchenguid/firstmate on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.