arc: Skill for Claude Code

.claude/skills/project-tracker/SKILL.md

project-tracker is a skill for Claude Code from teejayen/arc. It costs 32 tokens per session (552 once invoked), scanned A, original, MIT.

A project-status tracker that keeps each project’s phase, recent progress, next milestone, blockers, and last update in a shared file.

In plain words
What is it for?
Use it for progress updates, milestone changes, blocker tracking, status changes, and weekly project reviews.
Why use it?
It prevents project information from becoming scattered or outdated. It gives discussions and reviews a consistent current picture.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is teejayen/arc's own configuration. It tells Claude Code how to work on arc itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything arc configures →

View source ↗ teejayen/arc
Reuse

Borrowing it

Nothing to install: this file belongs to teejayen/arc. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/teejayen/arc/main/.claude/skills/project-tracker/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/teejayen/arc

Made for: Claude Code.

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 project-tracker

README.md
[![agentmods](https://agentmods.dev/badge/skills/teejayen/arc/project-tracker/github.svg)](https://agentmods.dev/skills/teejayen/arc/project-tracker)
Your own site
<a href="https://agentmods.dev/skills/teejayen/arc/project-tracker"><img src="https://agentmods.dev/badge/skills/teejayen/arc/project-tracker/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 project-tracker

Your own site · 80×15
<a href="https://agentmods.dev/skills/teejayen/arc/project-tracker"><img src="https://agentmods.dev/badge/skills/teejayen/arc/project-tracker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 552 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 $0.00032 $0.00552
Opus 5.5 $0.00013 $0.00221
Sonnet 5.5 $0.00006 $0.00110
Haiku 4.5 $0.00003 $0.00055

Measured 2mo ago against content hash 1b246ac0ea26, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

project-tracker 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 2mo 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.

.claude/skills/project-tracker/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project Tracker

Track progress and status of projects and ventures.

When to Use

  • Discussing any project
  • Progress update or milestone reached
  • Blocker identified or resolved
  • Strategic thinking about projects
  • Weekly review

Execution Steps

Step 1: Read current state

cat state/projects.json

Current structure:

{
  "project_slug": {
    "status": "ideation|building|launched|paused",
    "tagline": "One-line description",
    "next_milestone": "What's the immediate goal",
    "blockers": ["blocker1", "blocker2"],
    "recent_progress": ["item1", "item2"],
    "updated": "YYYY-MM-DD"
  }
}

Step 2: Determine update type

  • Progress update: Something moved forward
  • Blocker identified: New obstacle discovered
  • Blocker resolved: Obstacle removed
  • Milestone reached: Next milestone needs updating
  • Status change: Major phase transition
  • Strategic discussion: Thinking through direction

Step 3: Update projects.json

Make appropriate updates:

  • Add to recent_progress (keep last 5 items)
  • Update blockers array
  • Update next_milestone if reached
  • Update status if phase changed
  • Always update updated date

Step 4: Update area files if needed

For significant updates, also update:

  • areas/[project-name]/ files

Step 5: Cross-reference

Note connections:

  • Does this affect career planning?
  • Time/resource implications for family?
  • Learning opportunities to capture?

Step 6: Summarise

Provide current project status summary:

## Project Status

### [Project Name]
**Status:** [status]
**Next milestone:** [milestone]
**Blockers:** [blockers or "None"]
**Recent:** [last progress item]

### [Another Project]
**Status:** [status]
**Next milestone:** [milestone]
**Blockers:** [blockers or "None"]
**Recent:** [last progress item]

---
*Updated: YYYY-MM-DD*

State File Location

state/projects.json - source of truth for project status.

Area folders (areas/[project-name]/) contain deeper documentation, plans, and notes.

Read the full file on GitHub · 98 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. 2mo ago First seen · 98 lines · 32 tokens per session scan A 1b246ac0ea26

Subscribe to this mod's changes

project-tracker is a skill published in the GitHub repository teejayen/arc (5 stars, last pushed 9mo ago), licensed MIT. It adds 32 tokens to every session and 552 once invoked, about $0.0001 per session on Opus 5.5. 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.

Related

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