idea-forge

idea-forge is a skill for Claude Code, Codex from aaronjmars/aeon-agent. It costs 41 tokens per session (6,325 once invoked), scanned A, a copy of idea-forge, MIT.

An idea-planning tool with three modes: generate new startup ideas, check an existing idea list for viability, or write evidence-based startup memos.

In plain words
What is it for?
It helps with brainstorming under a theme or constraint, screening ideas, preparing research memos, and marking a selected idea for development.
Why use it?
It gives an open idea backlog a defined way to produce, filter, and investigate ideas instead of treating every idea as equally worth building.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit It helps with brainstorming under a theme or constraint, screening ideas, preparing research memos, and marking a selected idea for development.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aaronjmars/aeon-agent/idea-forge
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 aaronjmars/aeon-agent --skill idea-forge
Clone the repo
git clone --depth 1 https://github.com/aaronjmars/aeon-agent

Made for: Claude Code, 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 idea-forge

README.md
[![agentmods](https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/idea-forge/github.svg)](https://agentmods.dev/skills/aaronjmars/aeon-agent/idea-forge)
Your own site
<a href="https://agentmods.dev/skills/aaronjmars/aeon-agent/idea-forge"><img src="https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/idea-forge/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 idea-forge

Your own site · 80×15
<a href="https://agentmods.dev/skills/aaronjmars/aeon-agent/idea-forge"><img src="https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/idea-forge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,325 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 $0.00041 $0.06325
Opus 5 $0.00020 $0.03163
Sonnet 5 $0.00008 $0.01265
Haiku 4.5 $0.00004 $0.00632

Measured 5d ago against content hash 8b16fc222319, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

idea-forge scanned grade A with 1 finding 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Fallback: if curl/WebFetch both fail for a source, note `[source unreachable]` inline and proceed with remaining sources. Never fabricate quotes.
Origin

This is a copy

100% identical to idea-forge — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/idea-forge/SKILL.md · 394 lines

How it starts

The opening of the file, as written. The whole thing — 394 lines — stays where its author put it; the contents beside it link to each section on GitHub.

${var} — Selector mode [theme/constraint]. First token picks the mode: generate (default) collides the zeitgeist with the capability surface into ranked wedges; validate screens the existing backlog for viability; memo writes 2 rigorous evidence-backed startup memos. Anything after the mode is a theme/constraint bias. A bare theme with no mode keyword (e.g. payments, crypto) = generate biased to that theme. dry-run anywhere skips the notify. Examples: `` (empty → generate, open-ended) · simulation (generate, themed) · validate crypto (screen crypto ideas) · memo solo founder (memos under a constraint) · generate payments dry-run (generate, no notify). A pick:<id|name> value (from the "build next?" force-reply — e.g. pick:Onchain reputation) is intercepted before mode dispatch: it marks that idea as chosen-to-build in the shared backlog and ends — see "Force-reply interception" below.

Today is ${today}. Read soul/SOUL.md + soul/STYLE.md + STRATEGY.md first and read them closely — this skill thinks as the operator, in their worldview, not about them. If soul/ is the empty template, ground purely on STRATEGY.md + the capability surface and write in a clear, direct tone. Then read memory/MEMORY.md for current goals and active topics. Each mode below names its own memory/logs/ scan window for dedup — honor it.

Force-reply interception — pick:<idea> (run FIRST, before mode dispatch)

Before tokenizing ${var} for the mode, check it. If ${var} starts with pick:, this run is the operator answering the "which idea to build next?" force-reply — do not run generate/validate/memo. Handle it and end. This is behaviorally identical to idea-pipeline's step 0 (same backlog, same marking convention), so a pick reply works whichever skill it routes to:

  1. Strip the prefix: sel="${var#pick:}", then trim whitespace (the remainder may contain colons/spaces — keep them).
  2. If sel is empty → ./notify "Which idea should I mark as next to build? Reply with its name or backlog number." and end.
  3. Read the shared backlog memory/topics/startup-ideas.md. If missing or no idea rows → ./notify "No idea backlog yet — nothing to mark. Run generate first to fill it." and end.
  4. Resolve sel to exactly one row in the table (| date | name | one-liner | fit | T+F+E |):
    • By name (preferred): case-insensitive exact match on the name cell; else fuzzy — most significant-word overlap, or sel a substring of the name (or vice-versa). Require one clear best match.
    • By number: a bare integer N with no name match → the Nth data row (1-based, in file order).
    • No match / ambiguous tie → ./notify "Couldn't find an idea matching \"<sel>\". Reply with the exact name or backlog number. Candidates: <name1>, <name2>, <name3>." and end.
  5. Mark it chosen-to-build — the shared marking convention, identical to idea-pipeline: append ✓ selected ${today} to the end of that row's name cell, keeping the table pipes intact. If already marked, leave it (idempotent).
  6. Confirm with a short ./notify (keep it clean — no test/trace/ping/debug substrings): ./notify "Marked \"<idea name>\" as next to build — flagged in the backlog. Run /feature or /deploy-prototype on it when you're ready." Do not auto-dispatch any skill — marking chosen is the safe action.
  7. Log under a ### idea-forge heading in memory/logs/${today}.md: a - Mode: pick line, then - IDEA_FORGE_PICK: marked "<idea name>" as chosen-to-build (from a pick: reply).
  8. End the run — do not run mode dispatch.

Read the full file on GitHub · 394 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. 5d ago First seen · 394 lines · 41 tokens per session scan A 8b16fc222319

Subscribe to this mod's changes

idea-forge is a skill published in the GitHub repository aaronjmars/aeon-agent (11 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 6,325 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 100% identical to idea-forge, differing in 0 lines, and is treated as a copy.

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