idea

idea is a skill for Claude Code, Codex from Skyfox-io/Memex. It costs 84 tokens per session (551 once invoked), scanned A, original, MIT.

A quick-capture command that saves an idea in a Memex scratch inbox. The inbox is a temporary place for ideas that can be organized later.

In plain words
What is it for?
Use it when you explicitly want to save an idea, reminder, or possible future task for later sorting.
Why use it?
It records an idea immediately without interrupting the current work or forcing a decision about where the idea belongs.

Skill for Claude CodeCodex

Part of the memex plugin — 17 skills shipped together

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.

agentmods
npx agentmods add skills/skyfox-io/memex/idea
Any agent
npx skills add Skyfox-io/Memex --skill idea
Clone the repo
git clone --depth 1 https://github.com/Skyfox-io/Memex

Made for: Claude Code, Codex.

Or install memex, the plugin that ships this one along with the rest of its 17 skills.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/skyfox-io/memex/idea.svg)](https://agentmods.dev/skills/skyfox-io/memex/idea)
Your own site
<a href="https://agentmods.dev/skills/skyfox-io/memex/idea"><img src="https://agentmods.dev/badge/skills/skyfox-io/memex/idea.svg" alt="Measured on agentmods" height="20"></a>
Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 551 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00084 $0.00551
Opus 5 $0.00042 $0.00275
Sonnet 5 $0.00017 $0.00110
Haiku 4.5 $0.00008 $0.00055

Measured 4d ago against content hash 8a7cd909ed25, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

idea 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 4d 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.

memex/skills/idea/SKILL.md · 57 lines

What it actually says

Memex - Capture Idea

Wikilink rule: In any markdown you write, reference files as [[filename]].

Quick-capture to the scratch inbox. Routing happens later (session-end or on demand).

Step 1: Resolve the inbox path

Search order:

  1. Workspace config table, if present.
  2. scratch/ideas.md.
  3. ideas.md at workspace root.

If none exist, create scratch/ideas.md (or ideas.md at root if there's no scratch/ folder).

Step 2: Capture

Take the idea text from $ARGUMENTS or the user's message. If genuinely ambiguous, ask one clarifying question. Otherwise just capture.

Append:


### [brief title] - YYYY-MM-DD
[idea in 1-3 sentences]
-> Suggested route: [domain folder from Hub Map, or "unrouted"]

If _MANIFEST.md exists, read its Hub Map to suggest a route. Otherwise mark unrouted.

Step 3: Confirm

Idea captured: "[brief title]"
  -> Suggested route: [domain path or "unrouted"]
  Saved to: [resolved path]

Don't route now. Routing is session-end's job, or runs when the user asks.

Gotchas

  • Don't route eagerly. If the route looks obvious, still write to the inbox. Batched routing at session-end avoids fragmenting the inbox and lets the user review.
  • Inbox file missing mid-session. If the file vanished (renamed, moved), don't recreate silently in a new location. Re-resolve via the search order above; only create fresh when nothing matches.
  • Not for claims or decisions. A claim about state ("Alice now leads X") goes in the relevant file's content (and surfaces via the closets claims: field). A locked-in choice goes in decisions.md. The inbox is for unprocessed sparks.
  • One idea per entry. If the user dumps three ideas at once, append three blocks, not one merged blob. Routing works per-entry.
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. 4d ago First seen · 57 lines · 84 tokens per session scan A 8a7cd909ed25

Subscribe to this mod's changes

idea is a skill published in the GitHub repository Skyfox-io/Memex (17 stars, last pushed 2mo ago), licensed MIT. It adds 84 tokens to every session and 551 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 2026-08-30.

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