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carbon-background

Set up, pause, inspect or review Jay's bounded background checks after code changes.

Skill by jarbon

IndexedMIT★ 2
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/jarbon-carbon-background

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Set up, pause, inspect or review Jay's bounded background checks after code changes. Use when the user wants automatic checking during breaks, or asks what Jay found in the background.

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Nov 1, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Node.js package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/carbon-background
  • Your home directory (~)

What's inside

Skill name
carbon-background
Description
Set up, pause, inspect or review Jay's bounded background checks after code changes. Use when the user wants automatic checking during breaks, or asks what Jay found in the background.
License
MIT
Instructions
68 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Agent Skills spec issues

  • name: "carbon-background" does not match folder "background"

Files (6)

  • README.md
  • SKILL.md
  • engine.mjs
  • engine.test.mjs
  • first-use.md
  • lifecycle.test.mjs

SKILL.md (first lines)

# Jay background checks

Run the helper with the host's authorized terminal tool:
`node <plugin-root>/background/engine.mjs status <project-root>`.
Resolve the real project root first; quote paths. Read `../../background/README.md`
for the limits, host differences, exact commands and privacy disclosure.

## Default quick checks and opt-out

Lightweight local checks are on by default where the host trusts the command hooks.
Preserve existing saved disables and global pauses. Briefly explain on first use:
Jay checks changed source after roughly two quiet minutes, without running the app
or making model requests. Three minutes per run, at most three runs and ten reserved
minutes per UTC day, shared across projects. Offer “Pause background checks”; do not
repeatedly ask someone who already paused. AI review and executable project tests
still require separate approval. Host-hook approval is never bypassed.

`configure <root> '{"enabled":true}' --approved` records explicit approval.
`pause <root>` records a decline or pauses this project. `off-everywhere <root>`
stops all projects, including work already running. `allow-projects <root>` clears
only that global pause; projects with no saved setting then use the on-by-default
local checks, while explicitly disabled projects stay disabled. Explain this and ask before re-enabling.
`review <root>` returns saved evidence and records that the user reviewed this run.

## Daily chat reminder

With trusted host hooks, after 24 hours without a CARBON run being requested in a
chat, Jay briefly offers a run on that chat's next user turn. This is a question,
not permission to run. Each chat is independent; at most one nudge per 24 hours.
Do not repeat the question when the user is already requesting testing. When starting
an assessment, use the exact `thread-invoked` command supplied by the current host
hook to record it, including assessments selected without a slash command. Never
guess a thread key. No host thread ID means no automatic reminder.
`configure <root> '{"reminders":false}'` turns off nudges for this project;
`off-everywhere` also silences them. Never create a schedule or wake an idle model
just to ask. Host sessions that lack hooks retain ordinary manual commands.

Recommend one installed command based on the actual conversation and project, with a
brief reason: changed feature → focused test; keyboard/UI accessibility work →
accessibility; auth/trust boundaries → security; release decision → confidence.
Respect the edition: when a specialized command is absent, use `carbon-test` with
that focus instead of advertising unavailable functionality. Unclear context →
`carbon`. The local hint stores only a topic category, never the prompt text; use the
live chat to refine it. Do not fabricate activity or claim the suggestion is a result.

Checks stay on this machine by default. Claude Code users can separately opt into
`{"aiReview":true}`: it sends a bounded source excerpt to Claude through the signed-in
CLI, consumes that provider's allowance, and is NOT covered by a promise of free usage.
Do not enable AI review on Codex or on machines without the Claude CLI. Never switch
their provider or region silently. Ask before enabling this separate data flow.

For approved local regression tests, configure `tests` only after showing the user
the exact executable, arguments, project and side effects. These commands are not
sandboxed by CARBON: approve only isolated local tests without live services or
production credentials. Do not infer test safety from a package.json script name.

## Results

Show one brief Jay summary: checks passed/failed/deferred, possible issues by category,
strongest actionable finding and the next behavior check. Use the bundled
`background/jay-gray.webp` icon where local images are supported; otherwise say Jay.
Use monochrome bars with counts, not a made-up quality percentage or green styling.
Do not use another product's name or icon. Offer the `latest.html` report, review evidence,
ask the coding agent to fix a selected issue, or pause. Do not auto-fix, manufacture
confidence percentages, or describe source inspection as browser testing. No token
counter. A timeout, provider failure or cancellation is partial/blocked, not a pass.

Hosts must support and trust the bundled command hooks. In unsupported hosts, explain
that idle automation is unavailable and offer a normal bounded quick assessment with
available host tools. Never install a daemon, create a schedule or bypass hook trust.

From jarbon/carbon-lite, MIT.

More from jarbon/carbon-lite

Signals

Stars
2
Forks
1
Open issues
0
Last commit (this folder)
Oct 4, 2026 (1 month ago)
Last release
Oct 3, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

Same skill elsewhere

Copies of this SKILL.md published by others; search shows only one of them.

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Cite this page

carbon-background skill. Agent Mart. https://agentmart.dev/skills/jarbon-carbon-background (last updated 2026-10-24)