skill-foundry: Instructions file for Claude Code

CLAUDE.md

skill-foundry CLAUDE.md is an instructions file for Claude Code from tonykipkemboi/skill-foundry. It costs 867 tokens per session, scanned A, original, MIT.

Instruction files and build rules for creating Claude skills in a department plugin. A skill is a packaged set of instructions that teaches an agent how to perform a task.

In plain words
What is it for?
Use it when adding or changing skills, rebuilding the dist directory, checking frontmatter, or following the repository’s commit and push requirements.
Why use it?
It keeps skill files consistently named, formatted, validated, and synchronised with their built distribution files.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is tonykipkemboi/skill-foundry's own configuration. It tells Claude Code how to work on skill-foundry 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 skill-foundry configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tonykipkemboi/skill-foundry. 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/tonykipkemboi/skill-foundry/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/tonykipkemboi/skill-foundry

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 skill-foundry CLAUDE.md

README.md
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Your own site
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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 skill-foundry CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/tonykipkemboi/skill-foundry/claude-md"><img src="https://agentmods.dev/badge/instructions/tonykipkemboi/skill-foundry/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 867 This file is loaded in full into every session.
When invoked 867 The same file — it is already loaded in full.
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 $0.00867 $0.00867
Opus 5 $0.00434 $0.00434
Sonnet 5 $0.00173 $0.00173
Haiku 4.5 $0.00087 $0.00087

Measured 8d ago against content hash 7b8d2cc31f8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

skill-foundry CLAUDE.md 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 8d 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.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Department Plugin

Department plugin repo created from the skill-foundry template. Skills are instruction files (SKILL.md) that teach Claude how to perform specific tasks, packaged together as a Claude plugin.

CRITICAL: Before Every Commit or Push

Always run the build script before committing. This keeps dist/ in sync with skills/.

bash scripts/build-org-skills.sh
git add dist/

Never commit changes to skills/ without also committing the rebuilt dist/ files.

The build script also validates frontmatter against the open standard and fails on a bad name/description. CI re-runs the full policy check (see .github/skill-policy.md) on every PR.

Skill Format

  • Every skill lives in skills/<name>/SKILL.md with an optional references/ folder
  • YAML frontmatter required: name (lowercase, <=64 chars, must match the directory) and description (<=1024 chars). Full rules in .github/skill-policy.md.
  • Keep the body under 500 lines. Put large static content in references/ files
  • Never include PII (real emails, full names, Slack user IDs) in skills

Adding a New Skill

  1. Create skills/<name>/SKILL.md with frontmatter
  2. Add references/ files if needed
  3. Run bash scripts/build-org-skills.sh, then verify dist/<name>.skill was created
  4. Test: upload .skill file to Claude Desktop (Settings → Capabilities → Skills)
  5. Commit skill source, built .skill, and any README changes

Tools

Skills may use any tools the team needs: MCP connectors, automation platforms, plain prompts, anything. We do not mandate a tool. If your org has a shared tool-integration guide, see shared-tool-reference.md; the build script can auto-bundle it into skills that mention configured keywords (see .github/scripts/policy-config.sh).

Conventions

  • Default timezone: set your team default here
  • Parallelize tool calls wherever possible
  • Always confirm intent before taking actions (creating events, sending messages)
  • No PII in skills meant for org-wide distribution

Read the full file on GitHub · 75 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. 8d ago First seen · 75 lines · 867 tokens per session scan A 7b8d2cc31f8d

Subscribe to this mod's changes

skill-foundry CLAUDE.md is an instructions file published in the GitHub repository tonykipkemboi/skill-foundry (2 stars, last pushed 22d ago), licensed MIT. It adds 867 tokens to every session, about $0.0043 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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