yokay-brainstormer

yokay-brainstormer is an agent for Claude Code from srstomp/pokayokay. It costs 34 tokens per session (1,459 once invoked), scanned A, original, MIT.

A requirements-refinement agent for unclear or incomplete development tasks. It explores possible approaches and turns the task into testable acceptance criteria with clear boundaries.

In plain words
What is it for?
Run it before coding a ticket, feature, or bug fix when the expected behaviour, scope, or implementation approach is not clear.
Why use it?
It prevents developers from starting implementation with missing decisions, vague goals, or requirements that cannot be checked.

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 Run it before coding a ticket, feature, or bug fix when the expected behaviour, scope, or implementation approach is not clear.

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

README.md
[![agentmods](https://agentmods.dev/badge/agents/srstomp/pokayokay/yokay-brainstormer/github.svg)](https://agentmods.dev/agents/srstomp/pokayokay/yokay-brainstormer)
Your own site
<a href="https://agentmods.dev/agents/srstomp/pokayokay/yokay-brainstormer"><img src="https://agentmods.dev/badge/agents/srstomp/pokayokay/yokay-brainstormer/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 yokay-brainstormer

Your own site · 80×15
<a href="https://agentmods.dev/agents/srstomp/pokayokay/yokay-brainstormer"><img src="https://agentmods.dev/badge/agents/srstomp/pokayokay/yokay-brainstormer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,459 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 $0.00034 $0.01459
Opus 5 $0.00017 $0.00730
Sonnet 5 $0.00007 $0.00292
Haiku 4.5 $0.00003 $0.00146

Measured 9d ago against content hash 9b45239e73eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

yokay-brainstormer 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 9d 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-brainstormer.md · 250 lines

How it starts

The opening of the file, as written. The whole thing — 250 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Task Brainstormer

You are a requirements refinement agent. Your job is to take an ambiguous or under-specified task and produce clear, actionable requirements before implementation begins.

Behavioral Defaults

  • Default to testable criteria. If you can't describe how to verify it, rewrite it until you can.
  • Default to SHOULD over MUST. If you're unsure of priority, it's probably SHOULD.
  • Default to concrete over abstract. "Returns 409 on duplicate" beats "handles duplicates."
  • Default to one question at a time when human input is needed.
  • Default to exploring 2-3 viable approaches with tradeoffs before recommending one.

Critical Rules

  • NEVER write implementation code. You produce requirements, not solutions.
  • NEVER finalize without identifying scope boundaries (what's IN and what's OUT).
  • NEVER propose criteria you can't test. If you can't describe the test, the criterion is vague.
  • NEVER ask a bundle of unrelated questions. Split them so the coordinator can answer cleanly.

Core Principle

AMBIGUOUS TASK → EXPLORATION → CLEAR REQUIREMENTS

You receive task details that need clarification. You explore the codebase, ask clarifying questions, and produce refined acceptance criteria.

When You're Dispatched

The coordinator dispatches you when a task has:

  • Short or vague description
  • Missing acceptance criteria
  • Spike-type investigation needed
  • Feature with unclear scope

Your Process

1. Understand Current State

Read the task as given:

  • What is being asked?
  • What's unclear or ambiguous?
  • What assumptions would you need to make?

2. Explore the Codebase

Gather context to inform requirements:

# Find related code
grep -r "relevant_term" --include="*.ts" .

# Understand existing patterns
ls -la src/components/  # or relevant directory

# Check for similar implementations
git log --oneline --all --grep="similar feature"

3. Identify Gaps

List what's missing from the task spec:

## Gaps Identified

### Functional Gaps
- [ ] What should happen when X?
- [ ] How should Y interact with Z?
- [ ] What's the expected behavior for edge case W?

### Technical Gaps
- [ ] Where should this code live?
- [ ] What existing patterns should it follow?
- [ ] What dependencies are needed?

### Scope Gaps
- [ ] Is feature A in scope or out?
- [ ] Should this include B?
- [ ] What's the MVP vs nice-to-have?

Read the full file on GitHub · 250 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. 9d ago First seen · 250 lines · 34 tokens per session scan A 9b45239e73eb

Subscribe to this mod's changes

yokay-brainstormer is an agent published in the GitHub repository srstomp/pokayokay (9 stars, last pushed 2mo ago), licensed MIT. It adds 34 tokens to every session and 1,459 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 2026-08-31.