eg-brainstorm

eg-brainstorm is a skill for Codex from vshvedov/elephant-goldfish. It costs 19 tokens per session (804 once invoked), scanned A, original, MIT.

A guided brainstorming workflow that produces many different ideas, then combines them into a structured summary.

In plain words
What is it for?
Use it to develop product concepts, test hypotheses, compare options, or think of features. It can also research related ideas when that is requested.
Why use it?
It helps when an initial idea is vague or when you want to explore several possible directions before choosing one.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions subagents; mentions Codex; $skill-name invocation.

Good fit Use it to develop product concepts, test hypotheses, compare options, or think of features. It can also research related ideas when that is requested.

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Install with agentmods
npx agentmods add skills/vshvedov/elephant-goldfish/eg-brainstorm
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 vshvedov/elephant-goldfish --skill eg-brainstorm
Clone the repo
git clone --depth 1 https://github.com/vshvedov/elephant-goldfish

Made for: Codex.

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 eg-brainstorm

README.md
[![agentmods](https://agentmods.dev/badge/skills/vshvedov/elephant-goldfish/eg-brainstorm/github.svg)](https://agentmods.dev/skills/vshvedov/elephant-goldfish/eg-brainstorm)
Your own site
<a href="https://agentmods.dev/skills/vshvedov/elephant-goldfish/eg-brainstorm"><img src="https://agentmods.dev/badge/skills/vshvedov/elephant-goldfish/eg-brainstorm/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 eg-brainstorm

Your own site · 80×15
<a href="https://agentmods.dev/skills/vshvedov/elephant-goldfish/eg-brainstorm"><img src="https://agentmods.dev/badge/skills/vshvedov/elephant-goldfish/eg-brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 804 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 $0.00019 $0.00804
Opus 5 $0.00010 $0.00402
Sonnet 5 $0.00004 $0.00161
Haiku 4.5 $0.00002 $0.00080

Measured 11d ago against content hash 9de550629f6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

eg-brainstorm 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.

codex/skills/eg-brainstorm/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

EG Brainstorm Skill

Brainstorm a new concept using the elephant/goldfish workflow inverted: multiple fresh goldfish generate divergent ideas, then the elephant synthesizes.

Use the user's text around the $eg-brainstorm skill mention as the rough idea. If no idea is provided, ask for one.

Frame

Use Codex structured user input when available. Otherwise ask concise chat questions.

Ask:

  1. Stage: raw concept, hypothesis to validate, picking between options, or feature ideation for existing product.
  2. Breadth: about 5 deeper concepts, about 10 balanced concepts, or about 20 shallow concepts.
  3. Web research: broad, focused prior-art/market context, or off.

Seed

Print:

SEED
- The thought: <one sentence from the user's rough idea>
- What I think the user is really asking: <underlying need>
- Stage: <answer>
- Breadth target: <answer>
- Web research: <answer>
- Constraints inferred: <bullets>
- Success looks like: <one sentence>
- Out of scope: <bullets>

Ask whether the seed is right. If not, ask which field needs correction and revise before spawning goldfish.

Parallel Goldfish

The user invoked this skill, so parallel fresh subagents are explicitly authorized.

Pick 3-5 lenses:

  • Technical / architectural
  • Business / market
  • User experience
  • Contrarian / pre-mortem
  • Market research / prior art
  • Adjacent / lateral
  • First principles

Spawn each as a fresh Codex subagent with fork_context: false and agent_type: "default". If web research is enabled, tell the goldfish to browse/search and cite sources. If a source requires logged-in browser access, the goldfish must ask the elephant to request user approval before navigating.

Each goldfish gets only:

You are a fresh creative thinker with no prior context. Your lens is <LENS NAME>. Stay in that lens.

SEED:
<PASTE SEED>

Generate <PER-LENS COUNT> distinct concepts. For each:
- Name
- The bet
- Why it could win
- Why it could fail
- Sources, if research was used

End with `lens complete`.

Read the full file on GitHub · 126 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 126 lines · 19 tokens per session scan A 9de550629f6f

Subscribe to this mod's changes

eg-brainstorm is a skill published in the GitHub repository vshvedov/elephant-goldfish (44 stars, last pushed 4mo ago), licensed MIT. It adds 19 tokens to every session and 804 once invoked, about $0.0001 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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