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.
npx agentmods add instructions/crowdstrike/foundry-skills/claude-mdgit clone --depth 1 https://github.com/CrowdStrike/foundry-skillsWrote 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.
[](https://agentmods.dev/instructions/crowdstrike/foundry-skills/claude-md)<a href="https://agentmods.dev/instructions/crowdstrike/foundry-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/crowdstrike/foundry-skills/claude-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00699 | $0.00699 |
| Opus 5 | $0.00349 | $0.00349 |
| Sonnet 5 | $0.00140 | $0.00140 |
| Haiku 4.5 | $0.00070 | $0.00070 |
Grade A, and why
foundry-skills 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 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.
How it starts
The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Before responding to any Foundry development request, read AGENTS.md for the complete CLI reference, skills ecosystem, and development guide.
Below are Claude Code-specific additions for this plugin.
Plugin Hook Behavior
This plugin includes four hooks that run automatically:
- SessionStart:
foundry-session-start.shchecks CLI version and initializes the Foundry environment - UserPromptSubmit:
foundry-skill-router.shroutes user intents to the appropriate skill - PreToolUse (Bash):
foundry-cli-guard.shvalidates all Bash commands to ensure Foundry CLI commands include--no-promptand blocks manual directory/file creation for app structure - PreToolUse (Skill):
superpowers-foundry-bridge.shinterceptssuperpowers:brainstormingand redirects to the Foundry development workflow skill
Automated Safety Enforcement
The foundry-cli-guard.sh hook automatically validates all Bash commands to ensure:
- Foundry CLI commands always include
--no-promptflag (preventsError: EOFfailures) - Manual directory/file creation for app structure is blocked (prevents invalid manifest.yml)
- Commands are corrected before execution with clear error messages
This enforcement runs automatically. You don't need to remember the rules; the hook will catch mistakes before they cause failures.
Skills Integration with Claude Code Workflows
Planning Integration: For structured planning with review checkpoints, install superpowers (superpowers:writing-plans, superpowers:executing-plans). Without superpowers, the orchestrator provides basic planning guidance that accounts for Foundry's 47 capability types and manifest dependencies.
Execution Integration: If superpowers is installed, superpowers:executing-plans provides batch execution with review checkpoints between capabilities. Otherwise, use the orchestrator's built-in execution checkpoints.
Testing Integration: If superpowers is installed, superpowers:test-driven-development enforces RED-GREEN-REFACTOR discipline. Each Foundry sub-skill also has its own capability-specific testing patterns.
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.
- 4d ago First seen · 54 lines · 699 tokens per session scan A 2d964cfbc4df
foundry-skills CLAUDE.md is an instructions file published in the GitHub repository CrowdStrike/foundry-skills (24 stars, last pushed 4d ago), licensed MIT. It adds 699 tokens to every session, about $0.0035 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.
Other instructions, from other repositories
river-review GEMINI.md
Gemini CLI instructions for s977043/river-review, covering gemini instructions (river-review), 必須チェック, gemini-specific tips, prompt assembly and development tips.
living-manual CLAUDE.md
Instructions for dougstanford/living-manual, covering living-manual, start of every session, how work lands — non-negotiable, user's manual (living-manual) and releasing.
ship-it open-pr.instructions.md
Instructions for khrichtchatyi/ship-it: When the user asks to open, create, or submit a pull request, follow the skill in skills/open-pr/SKILL.md in full: verify gh is authenticated, resolve the target repository and default branch, push the current branch, open one pull request with a title and body derived from the…
agent-skills CLAUDE.md
Instructions for mindbox-cloud/agent-skills, covering agent-skills — developer guide for claude code, repository purpose, repository structure, how to add a new plugin and step 1 — create the directory structure.
my-claude-skills CLAUDE.md
Instructions for brody-0125/my-claude-skills, covering claude code skills repository, validation commands, sub-kopring-engineer: kotlin/java 코드 컨벤션 검증, numerical: 수치 연산 코드 검증 and sub-test-engineer: 문서 일관성 검증.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).