output-meta-pre-flight

output-meta-pre-flight is a skill for Claude Code from growthxai/output. It costs 34 tokens per session (811 once invoked), scanned A, original, Apache-2.0.

A pre-execution checklist for Output SDK workflows, which are multi-step programs built with the Output framework. It checks requirements, project conventions, required specialist agents, and quality gates before running a workflow.

In plain words
What is it for?
Use it before operating on an Output SDK workflow to gather requirements, follow its process instructions, validate conventions, and confirm that required agents are used.
Why use it?
It catches missing preparation and common implementation mistakes before execution. This is especially useful for rules about imports, HTTP responses, model calls, and worker processes.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions subagents.

Part of the outputai plugin — 50 skills, 5 agents, 1 hook shipped together

Good fit Use it before operating on an Output SDK workflow to gather requirements, follow its process instructions, validate conventions, and confirm that required agents are used.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/growthxai/output/output-meta-pre-flight
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-meta-pre-flight
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 50 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.

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README.md
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Your own site
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Your own site · 80×15
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Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 811 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: 1 finding, 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 27
    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 $0.00034 $0.00811
Opus 5 $0.00017 $0.00405
Sonnet 5 $0.00007 $0.00162
Haiku 4.5 $0.00003 $0.00081

Measured 11d ago against content hash 5db65c554d69, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

output-meta-pre-flight 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 11d 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-meta-pre-flight/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pre-Flight Rules for Output SDK Workflows

Execution Requirements

  • CRITICAL: For any step that specifies a subagent in the subagent="" XML attribute, you MUST use the specified subagent to perform the instructions for that step
  • Process all XML blocks sequentially and completely
  • Execute every numbered step in the process_flow EXACTLY as specified

Output SDK Knowledge Check

Ensure you have a deep understanding of the Output SDK and its capabilities. If not, use Claude Skill: output-meta-project-context and read it carefully.

Output SDK Conventions Check

Before proceeding with any workflow operation, verify:

  • ES Modules: All imports MUST use .js extension for ESM modules
  • HTTP Client: NEVER use axios directly - always use @outputai/http wrapper
  • HTTP Bodies: Consume non-HEAD response bodies with .json()/.text() or cancel unused bodies with response.body?.cancel()
  • LLM Client: NEVER use a direct llm call - always use @outputai/llm wrapper
  • Worker Restarts: npx output dev auto-restarts the worker on file changes; if the worker runs detached, restart it manually with docker restart <project>-worker-1

Requirements Gathering Strategy

Smart Defaults Application

When information is not explicitly provided, apply these defaults:

  • Retry Policies: 3 attempts with exponential backoff (1s initial, 10s max)
  • Model selection: Run output-dev-model-selection to pick the current default for the chosen provider. Don't pin a specific model ID here — the listing changes faster than the docs.
  • Error Handling: ApplicationFailure patterns with appropriate error types
  • Performance: Optimize for clarity and maintainability over raw speed
  • Timeouts: 30 seconds for activities, 5 minutes for workflows

Critical Information Requirements

Only stop to ask for clarification on:

  • Ambiguous input/output structures that cannot be inferred from context
  • Specific API keys or services not commonly used in the project
  • Non-standard error handling or recovery requirements
  • Complex orchestration patterns requiring specific sequencing
  • External dependencies not already in the project

Read the full file on GitHub · 74 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. 11d ago First seen · 74 lines · 34 tokens per session scan A 5db65c554d69

Subscribe to this mod's changes

output-meta-pre-flight is a skill published in the GitHub repository growthxai/output (435 stars, last pushed today), licensed Apache-2.0. It adds 34 tokens to every session and 811 once invoked, about $0.0002 per session on Opus 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 2026-08-30.

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