prime

prime is a skill for Claude Code from slamb2k/mad-skills. It costs 77 tokens per session (1,390 once invoked), scanned A, original, MIT.

A project-context reader that examines documentation and the source-tree layout before coding. It creates a summary of how the project is organised and what its rules say.

In plain words
What is it for?
Use it before implementing a feature or making a design decision, especially in an unfamiliar codebase with files such as README, CLAUDE.md, specs, or docs.
Why use it?
It reduces the risk of making changes without understanding existing decisions, conventions, or requirements.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md; mentions subagents.

Part of the mad-skills plugin — 20 skills, 2 hooks shipped together

Good fit Use it before implementing a feature or making a design decision, especially in an unfamiliar codebase with files such as README, CLAUDE.md, specs, or docs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/slamb2k/mad-skills/prime
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 slamb2k/mad-skills --skill prime
Clone the repo
git clone --depth 1 https://github.com/slamb2k/mad-skills

Made for: Claude Code.

Or install mad-skills, the plugin that ships this one along with the rest of its 20 skills, 2 hooks.

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 prime

README.md
[![agentmods](https://agentmods.dev/badge/skills/slamb2k/mad-skills/prime/github.svg)](https://agentmods.dev/skills/slamb2k/mad-skills/prime)
Your own site
<a href="https://agentmods.dev/skills/slamb2k/mad-skills/prime"><img src="https://agentmods.dev/badge/skills/slamb2k/mad-skills/prime/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 prime

Your own site · 80×15
<a href="https://agentmods.dev/skills/slamb2k/mad-skills/prime"><img src="https://agentmods.dev/badge/skills/slamb2k/mad-skills/prime.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,390 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 $0.00077 $0.01390
Opus 5 $0.00039 $0.00695
Sonnet 5 $0.00015 $0.00278
Haiku 4.5 $0.00008 $0.00139

Measured 10d ago against content hash 7362ec710a99, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

prime 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 10d 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/prime/SKILL.md · 167 lines

How it starts

The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prime - Project Context Loader

When this skill is invoked, IMMEDIATELY output the banner below before doing anything else. Pick ONE tagline at random — vary your choice each time. CRITICAL: Reproduce the banner EXACTLY character-for-character, including the diagonal / glyph before the name.

{tagline}

       /$$ /$$$$$$$  /$$$$$$$  /$$$$$$ /$$      /$$ /$$$$$$$$
      /$$/| $$__  $$| $$__  $$|_  $$_/| $$$    /$$$| $$_____/
     /$$/ | $$  \ $$| $$  \ $$  | $$  | $$$$  /$$$$| $$      
    /$$/  | $$$$$$$/| $$$$$$$/  | $$  | $$ $$/$$ $$| $$$$$   
   /$$/   | $$____/ | $$__  $$  | $$  | $$  $$$| $$| $$__/   
  /$$/    | $$      | $$  \ $$  | $$  | $$\  $ | $$| $$      
 /$$/     | $$      | $$  | $$ /$$$$$$| $$ \/  | $$| $$$$$$$$
|__/      |__/      |__/  |__/|______/|__/     |__/|________/

Taglines:

  • 🔋 Loading the arsenal...
  • 📚 Knowledge is power!
  • 📖 Absorbing the sacred texts...
  • 📡 Context loading... please stand by!
  • 💣 Priming the knowledge cannon!
  • 🤓 Time to do my homework!
  • 📜 Downloading the lore...
  • 🧠 Brain cells: ACTIVATING

Output Formatting

After the banner, display parsed input:

┌─ Input ────────────────────────────────────────
│  {Field}:  {value}
│  Flags:    {parsed flags or "none"}
└────────────────────────────────────────────────

Pre-flight results:

── Pre-flight ───────────────────────────────────
  ✅ {dep}           {version or "found"}
  ⚠️ {dep}           not found → {fallback detail}
  ❌ {dep}           missing → stopping
──────────────────────────────────────────────────

Stage/phase headers: ━━ {N} · {Name} ━━━━━━━━━━━━━━━━━━━━━━━━━

Status icons: ✅ done · ❌ failed · ⚠️ degraded · ⏳ working · ⏭️ skipped


Load project context to inform agent decisions. Raw file contents stay in a subagent — the primary thread only sees a structured PRIME_REPORT.

Step 1: Parse Arguments

Extract domain hints from the request (comma-separated). These are directory names or topic keywords to focus the context scan on. If no domain specified, load core context only (CLAUDE.md, README, specs/).

Read the full file on GitHub · 167 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. 10d ago First seen · 167 lines · 77 tokens per session scan A 7362ec710a99

Subscribe to this mod's changes

prime is a skill published in the GitHub repository slamb2k/mad-skills (5 stars, last pushed 3d ago), licensed MIT. It adds 77 tokens to every session and 1,390 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 2026-08-31.

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