output-workflow-start

output-workflow-start is a skill for Claude Code from growthxai/output. It costs 44 tokens per session (1,829 once invoked), scanned A, original, Apache-2.0.

A project command that starts an Output SDK workflow in the background and immediately returns a workflow ID. The ID can be used later to monitor the run and retrieve its result.

In plain words
What is it for?
Use it to start workflows that take minutes or hours, run multiple workflows in parallel, or disconnect and check progress later.
Why use it?
It lets long-running workflows continue without keeping the terminal waiting and gives you a way to track several runs at once.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the outputai plugin — 51 skills, 5 agents, 1 hook shipped together

Good fit Use it to start workflows that take minutes or hours, run multiple workflows in parallel, or disconnect and check progress later.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/growthxai/output/output-workflow-start
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add growthxai/output --skill output-workflow-start
Clone the repo
git clone --depth 1 https://github.com/growthxai/output

Made for: Claude Code.

Or install outputai, the plugin that ships this one along with the rest of its 51 skills, 5 agents, 1 hook.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for output-workflow-start

README.md
[![agentmods](https://agentmods.dev/badge/skills/growthxai/output/output-workflow-start/github.svg)](https://agentmods.dev/skills/growthxai/output/output-workflow-start)
Your own site
<a href="https://agentmods.dev/skills/growthxai/output/output-workflow-start"><img src="https://agentmods.dev/badge/skills/growthxai/output/output-workflow-start/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for output-workflow-start

Your own site · 80×15
<a href="https://agentmods.dev/skills/growthxai/output/output-workflow-start"><img src="https://agentmods.dev/badge/skills/growthxai/output/output-workflow-start.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,829 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 41 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 23
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 34
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 35
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 47
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 55
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 66
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 67
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 68
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 76
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 86
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 87
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 100
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 102
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 113
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 118
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 125
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 126
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 127
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 146
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 150
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 $0.00044 $0.01829
Opus 5.5 $0.00018 $0.00732
Sonnet 5.5 $0.00009 $0.00366
Haiku 4.5 $0.00004 $0.00183

Measured 1mo ago against content hash 66c403080e4b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

output-workflow-start 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 1mo 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.

coding_assistants/claude/plugins/outputai/skills/output-workflow-start/SKILL.md · 241 lines

How it starts

The opening of the file, as written. The whole thing — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Start Workflow Asynchronously

Overview

This skill starts a workflow asynchronously, meaning the command returns immediately with a workflow ID while the workflow executes in the background. Use this for long-running workflows or when you need to run multiple workflows in parallel.

When to Use This Skill

  • Starting workflows that take minutes or hours
  • Running multiple workflows in parallel
  • When you need to disconnect and check results later
  • Monitoring workflow progress separately
  • When you need the workflow ID immediately for tracking

When to Use Sync Instead

Consider using npx output workflow run (sync) when:

  • Workflow completes quickly (seconds)
  • You need the result immediately in your terminal
  • Simple testing during development
  • You want a single command with the result

Instructions

Basic Syntax

npx output workflow start <workflowName> --input '<json-input>'
npx output workflow start <workflowName> --input <path-to-json-file>

The --input flag is required when the workflow expects input data.

Input Methods

1. Inline JSON

Pass JSON directly on the command line:

npx output workflow start data-migration --input '{"batchSize": 1000}'
2. File Path (Recommended)

Reference a JSON file containing the input:

npx output workflow start data-migration --input src/data_migration/scenarios/large_batch.json

This is the recommended approach because:

  • Input is version controlled and reproducible
  • Complex inputs are easier to read and edit
  • Scenarios can be shared and reused

Getting the Workflow ID

The command outputs the workflow ID which you'll need for:

  • Checking status: npx output workflow status <id>
  • Getting results: npx output workflow result <id>
  • Debugging: npx output workflow debug <id>

Start and Watch in One Command

Add --monitor (-m) to attach immediately after starting and stream step updates until the workflow ends, instead of polling workflow status:

Read the full file on GitHub · 241 lines

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. 1mo ago First seen · 241 lines · 44 tokens per session scan A 66c403080e4b

Subscribe to this mod's changes

output-workflow-start is a skill published in the GitHub repository growthxai/output (443 stars, last pushed today), licensed Apache-2.0. It adds 44 tokens to every session and 1,829 once invoked, about $0.0002 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 2026-09-03.

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