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Commute Matrix

Commute Matrix is a skill for Claude Code, Codex from reggiechan74/cc-plugins. It costs 95 tokens per session (1,446 once invoked), scanned A, original, MIT.

A commute calculator for comparing travel times between a family home, workplaces, and children’s camps. It uses the Geoapify routing service to model trips by different travel modes.

In plain words
What is it for?
Use it to calculate morning and evening commute chains, compare driving or transit options, and filter camps by travel-time constraints.
Why use it?
It removes the need to calculate each travel leg separately and highlights camp options that exceed the family’s commute limit.

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 kids-camp-planner plugin — 11 skills, 6 commands, 2 agents shipped together

not rated 6 3mo ago A scan 95 tokens original MIT
View the source file reggiechan74/cc-plugins
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/reggiechan74/cc-plugins/commute-matrix
Any agent
npx skills add reggiechan74/cc-plugins --skill commute-matrix
Clone the repo
git clone --depth 1 https://github.com/reggiechan74/cc-plugins

Made for: Claude Code, Codex.

Or install kids-camp-planner, the plugin that ships this one along with the rest of its 11 skills, 6 commands, 2 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 Commute Matrix

README.md
[![agentmods](https://agentmods.dev/badge/skills/reggiechan74/cc-plugins/commute-matrix.svg)](https://agentmods.dev/skills/reggiechan74/cc-plugins/commute-matrix)
Your own site
<a href="https://agentmods.dev/skills/reggiechan74/cc-plugins/commute-matrix"><img src="https://agentmods.dev/badge/skills/reggiechan74/cc-plugins/commute-matrix.svg" alt="Measured on agentmods" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,446 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 $0.00095 $0.01446
Opus 5 $0.00048 $0.00723
Sonnet 5 $0.00019 $0.00289
Haiku 4.5 $0.00010 $0.00145

Measured 4d ago against content hash e40af9e6e943, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Commute Matrix 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.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/commute_calculator.py, scripts/test_commute_calculator.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

kids-camp-planner/skills/commute-matrix/SKILL.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Commute Matrix

Overview

Locate research directory: Read .claude/kids-camp-planner.local.md to get the research_dir path (default: camp-research). All user data paths below are relative to this directory. The family profile is at <research_dir>/family-profile.md. The API key is stored in .claude/kids-camp-planner.local.md under apis.geoapify_api_key.

Calculate travel times between home, work, and camp locations using the Geoapify Route Matrix API. Models full commute chains (Home -> Camp -> Work in the morning, Work -> Camp -> Home in the evening) across multiple travel modes, and flags providers that exceed the family's maximum commute constraint.

Prerequisites

  • Geoapify API key: Free tier at https://myprojects.geoapify.com/ (3,000 matrix requests/day, 90,000 geocoding/month)
  • Key stored in .claude/kids-camp-planner.local.md under apis.geoapify_api_key
  • If no API key is configured, prompt the user to set one up (link to the setup skill)

Workflow

Step 1: Read Configuration and Family Profile

Read .claude/kids-camp-planner.local.md to extract:

  • research_dir — path to the research directory
  • apis.geoapify_api_key — API authentication

Read <research_dir>/family-profile.md to extract:

  • home_address — origin for all commute calculations
  • parents[].work_address — destinations for chain calculations
  • max_commute_minutes — hard constraint threshold

If no API key is found, inform the user:

To use automated commute calculations, you need a free Geoapify API key. Get one at https://myprojects.geoapify.com/ and add it to .claude/kids-camp-planner.local.md under apis.geoapify_api_key, or run the setup skill to configure it.

Step 2: Scan Provider Files

Read all <research_dir>/providers/*.md files and extract:

  • Camp name (H1 heading)
  • Address (from **Location**: line in Basic Information section)
  • File path (for later updates)

Step 3: Run Commute Calculator

Execute the commute calculator script:

Read the full file on GitHub · 122 lines

Files

What ships with it

2 files 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. 4d ago First seen · 122 lines · 95 tokens per session scan A e40af9e6e943

Subscribe to this mod's changes

Commute Matrix is a skill published in the GitHub repository reggiechan74/cc-plugins (6 stars, last pushed 3mo ago), licensed MIT. It adds 95 tokens to every session and 1,446 once invoked, about $0.0005 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.

Analytics and metricsPlanning
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