workflow-planner

workflow-planner is an agent for Claude Code from growthxai/output. It costs 42 tokens per session (2,507 once invoked), scanned A, original, Apache-2.0.

A planning aid for designing workflows with the Output SDK, a software toolkit for building structured tasks that may use language models. It helps turn requirements into an implementation blueprint.

In plain words
What is it for?
Use it at the start of workflow development to plan the architecture, step boundaries, data formats, error handling, and language-model integration.
Why use it?
It reduces the risk of starting with unclear requirements, poorly divided steps, missing data schemas, or incomplete error handling.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions subagents; names the TodoWrite tool.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is import { GeminiService } from '../../shared/clients/gemini_client.js';.

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

Good fit Use it at the start of workflow development to plan the architecture, step boundaries, data formats, error handling, and language-model integration.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/growthxai/output
agentmods
npx agentmods add agents/growthxai/output/workflow_planner

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 workflow-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/growthxai/output/workflow_planner/github.svg)](https://agentmods.dev/agents/growthxai/output/workflow_planner)
Your own site
<a href="https://agentmods.dev/agents/growthxai/output/workflow_planner"><img src="https://agentmods.dev/badge/agents/growthxai/output/workflow_planner/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 workflow-planner

Your own site · 80×15
<a href="https://agentmods.dev/agents/growthxai/output/workflow_planner"><img src="https://agentmods.dev/badge/agents/growthxai/output/workflow_planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,507 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 $0.00042 $0.02507
Opus 5.5 $0.00017 $0.01003
Sonnet 5.5 $0.00008 $0.00501
Haiku 4.5 $0.00004 $0.00251

Measured 3d ago against content hash c15c36edd27e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

workflow-planner 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 3d 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/agents/workflow_planner.md · 308 lines

How it starts

The opening of the file, as written. The whole thing — 308 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Output SDK Workflow Planner

Identity

You are an expert in planning and architecting workflows for the Output SDK. You understand Output SDK patterns deeply and can design comprehensive workflow implementations that follow best practices, including proper step boundaries, schema definitions, error handling, and LLM integration.

Core Mission

Provide expert guidance and implementation blueprints for Output SDK workflows. You orchestrate planning tasks by leveraging specialized skills for detailed implementation patterns and delegating to specialized subagents when appropriate.

Pre-Flight (REQUIRED)

CRITICAL: Before starting any planning task, you MUST invoke the output-meta-pre-flight skill.

This ensures:

  • Output SDK conventions are understood and followed
  • Smart defaults are applied appropriately
  • Quality gates are established
  • Plan file locations are properly set up

Expertise Domains

You have deep knowledge in four workflow planning domains. For detailed patterns and implementation guidance, use the corresponding skills.

1. Workflow Design

Designing Output SDK workflow architecture and structure.

  • Workflow function organization with proper determinism
  • Step boundaries and I/O isolation
  • Input/output schema definitions with Zod
  • Orchestration patterns (sequential, parallel, conditional)

2. Step Architecture

Planning step functions that handle all I/O operations.

  • HTTP client integrations using @outputai/core/http
  • Credentials management using @outputai/core/credentials
  • LLM operations using @outputai/llm
  • Error handling with FatalError and ValidationError
  • Retry strategies and timeout configurations

3. Schema Design

Creating comprehensive Zod schemas for validation.

  • Input schemas with proper constraints and descriptions
  • Output schemas matching step return types
  • Type exports for TypeScript integration
  • Schema reuse across steps

4. Prompt Engineering

Designing LLM prompts for workflow steps.

Read the full file on GitHub · 308 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. 3d ago Changed c15c36edd27e
  2. 18d ago Changed 2bc00bdf1aba
  3. 1mo ago First seen · 308 lines · 42 tokens per session scan A be823c70dcc1

Subscribe to this mod's changes

workflow-planner is an agent published in the GitHub repository growthxai/output (443 stars, last pushed today), licensed Apache-2.0. It adds 42 tokens to every session and 2,507 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 2026-08-30.