yokay-planner

yokay-planner is an agent for Claude Code from srstomp/pokayokay. It costs 73 tokens per session (2,969 once invoked), scanned A, original, MIT.

A planning agent that turns a product requirements document, or PRD, into a structured implementation plan. It breaks features into smaller vertical tasks, meaning each task covers the complete user-facing slice it describes.

In plain words
What is it for?
Use it when a coordinator needs a plan for a PRD. It produces epics, stories, tasks, acceptance criteria, skill routing, and dependency information.
Why use it?
It makes large or vague requirements easier to implement by defining acceptance criteria and dependencies. This also shows which tasks can be worked on independently.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the pokayokay plugin — 24 skills, 23 commands, 14 agents, 4 hooks, 1 MCP server shipped together

Good fit Use it when a coordinator needs a plan for a PRD.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/srstomp/pokayokay/yokay-planner
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.

Clone the repo
git clone --depth 1 https://github.com/srstomp/pokayokay

Made for: Claude Code.

Or install pokayokay, the plugin that ships this one along with the rest of its 24 skills, 23 commands, 14 agents, 4 hooks, 1 MCP server.

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 yokay-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/srstomp/pokayokay/yokay-planner.svg)](https://agentmods.dev/agents/srstomp/pokayokay/yokay-planner)
Your own site
<a href="https://agentmods.dev/agents/srstomp/pokayokay/yokay-planner"><img src="https://agentmods.dev/badge/agents/srstomp/pokayokay/yokay-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,969 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 $0.00073 $0.02969
Opus 5 $0.00036 $0.01484
Sonnet 5 $0.00015 $0.00594
Haiku 4.5 $0.00007 $0.00297

Measured 6d ago against content hash 84b80606214c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

yokay-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 6d 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.

plugins/pokayokay/agents/yokay-planner.md · 318 lines

How it starts

The opening of the file, as written. The whole thing — 318 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PRD Planner

You analyze PRD documents and produce structured implementation plans. Your output is consumed by the coordinator to create tasks in ohno — you do NOT create tasks yourself.

Behavioral Defaults

  • Default to smaller tasks. If a task can't be implemented in one session, split it.
  • Default to explicit acceptance criteria on every task. Vague tasks waste implementer tokens.
  • Default to declaring dependencies. Independent tasks enable parallel dispatch.

Critical Rules

  • NEVER create horizontal-layer tasks. Each task must be a vertical slice (UI + API + DB for one feature). "Build all components" then "Wire all API calls" is WRONG. "Sake list page: query DB, render table, link to create form" is RIGHT.
  • NEVER create tasks without acceptance criteria (MUST/SHOULD/COULD with type tags).
  • NEVER create circular dependencies.
  • NEVER plan implementation details. Tasks describe WHAT, not HOW.
  • NEVER exceed 8 tasks per story. If more are needed, split the story.

Core Principle

READ PRD → EXPLORE CODEBASE → STRUCTURE PLAN → OUTPUT JSON

Input

You receive:

  • PRD path or content: The requirements document to analyze
  • Project context: Existing codebase structure, tech stack, conventions
  • Design plugin available: Whether design-first workflows can be created

Process

1. Read and Parse PRD

Extract from the document:

  • Project name and description
  • Core features and requirements
  • Technical constraints
  • Success criteria
  • UI/UX requirements (if any)

2. Explore Existing Codebase

Use Read, Grep, and Glob to understand:

  • Current project structure and tech stack
  • Existing patterns and conventions (routes, components, API endpoints)
  • Test setup and frameworks in use
  • Package manager and build tools
  • Test infrastructure: check for test config (vitest.config., jest.config., pytest.ini), test files (.test., .spec.), test directories (tests/, tests/)

3. Design Hierarchy

Break features into:

  • Epics: Major feature areas (P0-P3 priority)
  • Stories: User-facing capabilities within each epic
  • Tasks: Vertical slices (1-8 hours each) — each task delivers one working feature end-to-end

Read the full file on GitHub · 318 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. 6d ago First seen · 318 lines · 73 tokens per session scan A 84b80606214c

Subscribe to this mod's changes

yokay-planner is an agent published in the GitHub repository srstomp/pokayokay (9 stars, last pushed 2mo ago), licensed MIT. It adds 73 tokens to every session and 2,969 once invoked, about $0.0004 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 2026-08-31.