chart

chart is a skill for Claude Code, Codex from nicknisi/ideation. It costs 195 tokens per session (3,909 once invoked), scanned A, original, MIT.

A planning tool for large or unclear efforts where the route to the result is not yet known. It creates a shared map of decision questions and works through them one at a time.

In plain words
What is it for?
Use it to define the destination, record important choices, resolve uncertainty, and produce a clearer route for a later specification.
Why use it?
It turns a vague project into a sequence of decisions before detailed implementation planning begins.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the ideation plugin — 7 skills, 3 agents 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/nicknisi/ideation/chart
Any agent
npx skills add nicknisi/ideation --skill chart
Clone the repo
git clone --depth 1 https://github.com/nicknisi/ideation

Made for: Claude Code, Codex.

Or install ideation, the plugin that ships this one along with the rest of its 7 skills, 3 agents.

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 chart

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicknisi/ideation/chart.svg)](https://agentmods.dev/skills/nicknisi/ideation/chart)
Your own site
<a href="https://agentmods.dev/skills/nicknisi/ideation/chart"><img src="https://agentmods.dev/badge/skills/nicknisi/ideation/chart.svg" alt="Measured on agentmods" height="20"></a>
Per session 195 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,909 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 $0.00195 $0.03909
Opus 5 $0.00097 $0.01954
Sonnet 5 $0.00039 $0.00782
Haiku 4.5 $0.00019 $0.00391

Measured 4d ago against content hash a8faeb93dd08, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

chart 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.

skills/chart/SKILL.md · 173 lines

How it starts

The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Chart

A loose idea has arrived — too big for one agent session, and wrapped in fog: the way from here to the destination isn't visible yet. Charting is about finding that way, not charging at the destination. This skill charts the way as a shared map of decision tickets in the repo, then works the tickets one at a time — questions whose resolution is a decision, not slices of a build to execute — until the route is clear.

The destination varies per effort, and naming it is the first act of charting — it shapes every ticket. It might be a spec to hand off to /ideation:ideation, a decision to lock before planning starts, or a change made in place like a data-structure migration. The map is domain-agnostic — engineering work, course content, whatever fits the shape.

This skill is the upstream of ideation. /ideation:brainstorm decides whether (one idea, in conversation, no files); /ideation:ideation plans how (decided to build, one contract, produces specs). Chart is for the case that breaks ideation's shape: the effort is so large or foggy that even the route to a single contract isn't visible — you can't yet hold the whole journey in one session. It builds a persistent, multi-session map instead, and hands off to ideation once the destination is sharp enough to spec.

The map lives locally

There is no issue-tracker integration. The map is a markdown file and its tickets are markdown files, so the map is git-tracked, diffable, and editable by any session — the local-markdown tracker is the only tracker this skill supports.

docs/chart/{slug}/
  map.md                        # the map — the canonical index
  tickets/
    {ticket-slug}.md            # one file per ticket

The {slug} is kebab-cased from the destination, chosen when the map is created (the charting session names it, like ideation names its project).

Plan, don't do

Chart is planning by default: each ticket resolves a decision, and the map is done when the way is clear — nothing left to decide before someone goes and does the thing. The pull to just do the work is usually the signal you've reached the edge of the map and it's time to hand off (to ideation, or to the destination's own doer). An effort can override this in its Notes — carrying execution into the map itself — but absent that, produce decisions, not deliverables.

Read the full file on GitHub · 173 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. 4d ago First seen · 173 lines · 195 tokens per session scan A a8faeb93dd08

Subscribe to this mod's changes

chart is a skill published in the GitHub repository nicknisi/ideation (12 stars, last pushed yesterday), licensed MIT. It adds 195 tokens to every session and 3,909 once invoked, about $0.0010 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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