Borrowing it
Nothing to install: this file belongs to CrowdStrike/fusion-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/CrowdStrike/fusion-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/CrowdStrike/fusion-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/fusion-skills/claude-md)<a href="https://agentmods.dev/instructions/crowdstrike/fusion-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/crowdstrike/fusion-skills/claude-md/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.
<a href="https://agentmods.dev/instructions/crowdstrike/fusion-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/crowdstrike/fusion-skills/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00569 | $0.00569 |
| Opus 5.5 | $0.00228 | $0.00228 |
| Sonnet 5.5 | $0.00114 | $0.00114 |
| Haiku 4.5 | $0.00057 | $0.00057 |
Grade A, and why
fusion-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 25d 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 — 33 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project-level instructions for Claude Code when working in the fusion-skills plugin. For the tool-agnostic guide (repo structure, skills ecosystem, usage without the plugin system), see AGENTS.md.
Plugin Hook Behavior
This plugin includes two hooks that run automatically:
- UserPromptSubmit + PreToolUse:
fusion-skill-router.shdetects Fusion workflow intent in the prompt, writes a short-lived marker file, and injects advisory context steering toward theworkflowsorchestrator skill. On later tool calls it emits a non-blocking reminder until the Skill tool is invoked. - PreToolUse (Skill):
fusion-foundry-bridge.shprovides advisory cross-plugin routing betweencrowdstrike-falcon-fusion(workflows) andcrowdstrike-falcon-foundry(Foundry app lifecycle).
Both hooks are advisory only — they always exit 0 and never block a user action or a skill invocation.
Counter-Rationalizations
Each thought on the left has led to a broken workflow; the right column says what to do instead:
| Thought | Reality |
|---|---|
| "I'll write the YAML without searching actions" | Resolve IDs first — Common Action IDs table, then action_search.py; action IDs are opaque catalog identifiers, only discoverable via API |
| "I'll use a placeholder ID for now" | Resolve every action ID before writing YAML. No PLACEHOLDER_* values |
| "version_constraint is optional" | Every action requires it: ~<major> of its semantic_version (~0 when none, e.g. Charlotte AI at 0.0.100) |
| "Validation can wait until deploy" | Authoring validates; deployment validates again as a pre-flight |
| "I'll deploy without releasing" | Workflows must be released before they can execute |
| "This is basically a Foundry app" | If it needs UI/functions/collections, route to foundry-skills instead |
Skills Integration
- Orchestration: The
workflowsskill is the entry point. It routes toauthoring,deployment, andexecution, and coordinates the full lifecycle for end-to-end requests. - Direct invocation: Each sub-skill can be invoked directly for a focused task (e.g., just validating an existing YAML file).
- Shared auth: All Python scripts import credentials from
common/scripts/auth.py(get_client()for Fusion,get_ngsiem_client()for lookup files). - Superpowers: If installed, superpowers planning/TDD skills MAY supplement the workflow but should not replace the orchestrator's routing.
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.
- 25d ago Changed · -6 tokens per session 9d8b3986f51c
- 1mo ago First seen · 33 lines · 575 tokens per session scan A 43bcc6be71a2
fusion-skills CLAUDE.md is an instructions file published in the GitHub repository CrowdStrike/fusion-skills (27 stars, last pushed 2d ago), licensed MIT. It adds 569 tokens to every session, about $0.0023 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 2026-08-30.
Other instructions, from other repositories
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.