firstmate: Skill for Claude Code

.agents/skills/away-quiet-supervision/SKILL.md

away-quiet-supervision is a skill for Claude Code from kunchenguid/firstmate. It costs 33 tokens per session (631 once invoked), scanned A, original, MIT.

A supervision procedure for away or quiet sessions, where a daemon continues watching the project while the main session is paused. A daemon is a background process that performs work without direct interaction.

In plain words
What is it for?
Use it when invoking or managing /afk or /quiet, handling away-supervisor messages, or returning from an away state.
Why use it?
It prevents duplicate supervision and defines how operational messages, stored records, and uncertainty are handled while the user is away.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents).

This is kunchenguid/firstmate's own configuration. It tells Claude Code how to work on firstmate 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 firstmate configures →

About the project

firstmate is an agent distribution that lets one coding agent coordinate a crew of autonomous agents working in separate git worktrees. It is for running parallel fixes, investigations, plans, and audits while receiving completed pull requests, merges, or reports through one supervising agent. The catalogue entries provide skills, hooks, instructions, and settings for operating this workflow.

kunchenguid/firstmate · 8,295 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to kunchenguid/firstmate. 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/kunchenguid/firstmate/main/.agents/skills/away-quiet-supervision/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/kunchenguid/firstmate

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Your own site
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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.

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Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 631 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 $0.00033 $0.00631
Opus 5.5 $0.00013 $0.00252
Sonnet 5.5 $0.00007 $0.00126
Haiku 4.5 $0.00003 $0.00063

Measured 25d ago against content hash 6b94bb3efb9b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

away-quiet-supervision 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 25d 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.

.agents/skills/away-quiet-supervision/SKILL.md · 25 lines

What it actually says

Away and quiet supervision safety

The /afk and /quiet skills own their respective entry procedures and share the daemon machinery; architecture owns the captain-held recheck difference between their postures. These safety facts apply to both:

  • Every current daemon injection uses the away-supervisor kind from bin/fm-operational-input.sh after FM_OPERATIONAL_PREFIX (U+2063 INVISIBLE SEPARATOR followed by FIRSTMATE_OP: ), except that a Claude Code primary, which strips U+2063, receives that owner's record-backed doorbell and it counts as marked only when bin/fm-operational-input.sh open <path> verifies its record; the /afk skill owns legacy bare-marker compatibility.
  • state/.afk-contract is the away posture, written in the same turn as /afk before any other work, because /afk is itself the go: no read-back gates entry or waits for a go; entry announces hold-for-return only, and the away session acts on those words by its own judgment through the guarded scripts under standing authority, holding for the return on doubt. A record carrying quiet mode (bin/fm-afk-contract.sh mode) is quiet mode's instead: the captain is present, it holds nothing for a return, and requested actions proceed under ordinary attended authority.
  • While state/.afk exists, the daemon owns supervision; do not arm a separate watcher. The daemon is never launched on Pi, where the ordinary supervision session continues under the record with main parked: the branch takes every safe actionable wake it can, and only a declined wake (including a broken branch or unsafe scan) or a watcher failure wakes main. Away mode on a non-Pi home that runs the supervision host (by default on Claude; docs/configuration.md "Supervision host") works the same way with the supervision host as the branch; a wake it hands back arrives through that harness's own wake path and is never the captain's return.
  • A marked message while away or quiet mode is active is internal escalation and does not exit that mode.
  • A message beginning /afk refreshes away mode; a message beginning /quiet refreshes quiet mode.
  • Any other unmarked message means the captain returned in away mode (load /afk, run the return owner, and do not process that message as ordinary work until its durable catch-up gate clears), or, in quiet mode, is simply answered as ordinary work with the flag and daemon left untouched until an explicit /quiet off.
  • Away and quiet mode never expand approval authority for merges, ask-user findings, destructive actions, irreversible actions, or security-sensitive choices.
  • Bias ambiguous input toward exit because a present captain takes precedence.
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. 25d ago Changed · +1 lines 6b94bb3efb9b
  2. 26d ago Changed · +1 lines 22c921494a73
  3. 27d ago First seen · 23 lines · 33 tokens per session scan A aea20b52cfe9

Subscribe to this mod's changes

away-quiet-supervision is a skill published in the GitHub repository kunchenguid/firstmate (8,295 stars, last pushed today), licensed MIT. It adds 33 tokens to every session and 631 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 2026-09-28.