Borrowing it
Nothing to install: this file belongs to airmcp-com/mcp-standards. 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/airmcp-com/mcp-standards/main/CLAUDE.mdgit clone --depth 1 https://github.com/airmcp-com/mcp-standardsWrote 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/airmcp-com/mcp-standards/claude-md)<a href="https://agentmods.dev/instructions/airmcp-com/mcp-standards/claude-md"><img src="https://agentmods.dev/badge/instructions/airmcp-com/mcp-standards/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 5.1 | $0.04653 | $0.04653 |
| Opus 5 | $0.02327 | $0.02327 |
| Sonnet 5 | $0.00931 | $0.00931 |
| Haiku 4.5 | $0.00465 | $0.00465 |
Grade A, and why
mcp-standards 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 — 533 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Configuration - SPARC Development Environment
🚨 CRITICAL: CONCURRENT EXECUTION & FILE MANAGEMENT
ABSOLUTE RULES:
- ALL operations MUST be concurrent/parallel in a single message
- NEVER save working files, text/mds and tests to the root folder
- ALWAYS organize files in appropriate subdirectories
- USE CLAUDE CODE'S TASK TOOL for spawning agents concurrently, not just MCP
⚡ GOLDEN RULE: "1 MESSAGE = ALL RELATED OPERATIONS"
MANDATORY PATTERNS:
- TodoWrite: ALWAYS batch ALL todos in ONE call (5-10+ todos minimum)
- Task tool (Claude Code): ALWAYS spawn ALL agents in ONE message with full instructions
- File operations: ALWAYS batch ALL reads/writes/edits in ONE message
- Bash commands: ALWAYS batch ALL terminal operations in ONE message
- Memory operations: ALWAYS batch ALL memory store/retrieve in ONE message
🎯 CRITICAL: Claude Code Task Tool for Agent Execution
Claude Code's Task tool is the PRIMARY way to spawn agents:
// ✅ CORRECT: Use Claude Code's Task tool for parallel agent execution
[Single Message]:
Task("Research agent", "Analyze requirements and patterns...", "researcher")
Task("Coder agent", "Implement core features...", "coder")
Task("Tester agent", "Create comprehensive tests...", "tester")
Task("Reviewer agent", "Review code quality...", "reviewer")
Task("Architect agent", "Design system architecture...", "system-architect")
MCP tools are ONLY for coordination setup:
mcp__claude-flow__swarm_init- Initialize coordination topologymcp__claude-flow__agent_spawn- Define agent types for coordinationmcp__claude-flow__task_orchestrate- Orchestrate high-level workflows
📁 File Organization Rules
NEVER save to root folder. Use these directories:
/src- Source code files/tests- Test files/docs- Documentation and markdown files/config- Configuration files/scripts- Utility scripts/examples- Example code
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 · 533 lines · 4,653 tokens per session scan A b055b0a7897c
mcp-standards CLAUDE.md is an instructions file published in the GitHub repository airmcp-com/mcp-standards (3 stars, last pushed 9mo ago), licensed MIT. It adds 4,653 tokens to every session, about $0.0233 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 2026-09-03.
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