Background

What it does

When your agent uses it

• The user wants to see
• Prune background agents fired during prior chain runs
• With /hyperflow:background
• List background agents

Example prompts

• “list background agents”
• “s running in background”
• “cancel background agent”
• “/background”

Requirements

• Compatibility (from SKILL.md): Designed for Claude Code
• Pre-approved tools (allowed-tools): Read, Write, Edit, Bash(ls:*), Bash(cat:*), Bash(rm:*), Bash(find:*), Glob, Grep

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

1. 1Read registry, find the entry.
2. 2If status: running, signal cancellation per the provider's mechanism (Claude Code: use the runtime's cancellation API for that subagent…
3. 3Update registry entry: status: cancelled, cancelled_at: .
4. 4Print Cancelled — .

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Write
  • Edit
  • Bash(ls:*)
  • Bash(cat:*)
  • Bash(rm:*)
  • Bash(find:*)
  • Glob
  • Grep

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

  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.

• Compatibility

  Designed for Claude Code

  From compatibility in the SKILL.md frontmatter.

Context cost

Background loads about 2.2k tokens when it runs. Until then it costs about 104 tokens; SKILL.md has 637 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~104

When it runs · the whole SKILL.md, loaded when a task matches

~2.2k

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

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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 637 words, ~2,200 tokens.

name

background

description

Use when the user wants to see, inspect, cancel, or prune background agents fired during prior chain runs. Read/manage `.hyperflow/background/registry.json` and the per-agent output buffers at `.hyperflow/background/<id>.md`. Standalone — never auto-invoked. Trigger with /hyperflow:background, "list background agents", "what's running in background", "cancel background agent", "show background result".

allowed-tools

Read, Write, Edit, Bash(ls:*), Bash(cat:*), Bash(rm:*), Bash(find:*), Glob, Grep

compatibility

Designed for Claude Code

argument-hint

<list|show|cancel|prune> [id|--all]

version

4.7.0

license

MIT

tags

background, orchestration, lifecycle

## In flight (N)

| ID                                | Purpose                              | Fired      | Timeout | Blocks  |
|-----------------------------------|--------------------------------------|------------|---------|---------|
| `bg-1718049600-quality-gates-b2`  | Layer 5 gates Batch 2                | 17:30      | 18:00   | step3   |
| `bg-1718049820-ci-watcher`        | GitHub Actions watch for v4.7.0      | 17:33      | 18:33   | —       |

## Completed (uncollected, N)

| ID                                | Purpose                              | Completed  | Duration | Output |
|-----------------------------------|--------------------------------------|------------|----------|--------|
| `bg-1718045400-scaffold-refresh`  | Refresh .hyperflow/architecture.md   | 16:42      | 2m 18s   | 1.4kb  |

## Stalled / Errored (N)

| ID                                | Purpose                              | Status            | Reason            |
|-----------------------------------|--------------------------------------|-------------------|-------------------|
| `bg-1717980000-cache-compact`     | Compact learnings.md                 | STALLED           | timeout (30m)     |

/hyperflow:background list

## In flight (1)
| ID                                | Purpose                              | Fired | Timeout | Blocks |
|-----------------------------------|--------------------------------------|-------|---------|--------|
| `bg-1718049600-quality-gates-b2`  | Layer 5 gates Batch 2                | 17:30 | 18:00   | step3  |

## Completed (uncollected, 1)
| ID                                | Purpose                              | Completed | Duration | Output |
|-----------------------------------|--------------------------------------|-----------|----------|--------|
| `bg-1718045400-scaffold-refresh`  | Refresh .hyperflow/architecture.md   | 16:42     | 2m 18s   | 1.4kb  |

1 in flight · 1 uncollected · 0 needs attention

/hyperflow:background show bg-1718045400-scaffold-refresh

# Background Result — Refresh .hyperflow/architecture.md

| Field      | Value                                |
|------------|--------------------------------------|
| Agent ID   | `bg-1718045400-scaffold-refresh`     |
| Fired at   | 2026-05-16T16:40:00Z                 |
| Completed  | 2026-05-16T16:42:18Z (2m 18s)        |
| Status     | complete                             |
| Tokens     | worker 4.2k                          |

## Output
<refreshed architecture.md content fragments + diff summary>

/hyperflow:background cancel --all

Cancelled bg-1718049600-quality-gates-b2 — Layer 5 gates Batch 2
Cancelled bg-1718049820-ci-watcher — GitHub Actions watch for v4.7.0
Cancelled 2 agents.

© jeremylongshore, 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 plugins/ai-agency/hyperflow/skills/background of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit cfae287