Borrowing it
Nothing to install: this file belongs to 156554395/tx-cos-mcp. 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/156554395/tx-cos-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/156554395/tx-cos-mcpWrote 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/156554395/tx-cos-mcp/claude-md)<a href="https://agentmods.dev/instructions/156554395/tx-cos-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/156554395/tx-cos-mcp/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/156554395/tx-cos-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/156554395/tx-cos-mcp/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 | $0.01332 | $0.01332 |
| Opus 5 | $0.00666 | $0.00666 |
| Sonnet 5 | $0.00266 | $0.00266 |
| Haiku 4.5 | $0.00133 | $0.00133 |
Grade A, and why
tx-cos-mcp 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 9d 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 — 161 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Architecture Overview
This is a Model Context Protocol (MCP) server that provides Tencent Cloud Object Storage (COS) functionality to Claude Desktop, Cursor, Windsurf and other MCP-compatible clients. The architecture follows a modular service-oriented design:
Core Components
- index.js: MCP server entry point - defines 17 tools, handles MCP protocol communication, validates inputs
- src/cosService.js: Main service class wrapping Tencent Cloud COS SDK with advanced features (chunked upload, retry logic, resource cleanup)
- src/config.js: Environment-based configuration management for COS credentials and settings
- src/uploadProgress.js: Progress persistence system for resumable uploads using JSON files
- src/tempManager.js: Unified temporary file management with structured directory layout (temp/progress/, temp/cache/, temp/uploads/)
Key Design Patterns
- MCP Protocol Compliance: All stdout must remain clean (no console.log in production) - this is critical for MCP communication
- Automatic Resource Management: Every upload operation has corresponding cleanup logic to prevent temp file leaks
- Intelligent Upload Strategy: Files >5MB automatically use chunked upload with progress tracking and resume capability
- Graceful Error Handling: Network failures trigger exponential backoff retry with configurable limits
Development Commands
Essential Commands
# Install dependencies
pnpm install
# Start MCP server locally
pnpm dev
# Debug with MCP Inspector (essential for MCP development)
pnpm inspector
# Run comprehensive test suite
pnpm test # Basic functionality
pnpm test:mcp # MCP protocol compliance
pnpm test:temp # Temporary file management
pnpm test:cleanup # Resource cleanup verification
pnpm test:path # Path validation with Chinese filenames
# Publish to npm (maintainers)
pnpm publish:npm
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.
- 9d ago First seen · 161 lines · 1,332 tokens per session scan A 3460c862cbd6
tx-cos-mcp CLAUDE.md is an instructions file published in the GitHub repository 156554395/tx-cos-mcp (0 stars, last pushed 11mo ago), licensed MIT. It adds 1,332 tokens to every session, about $0.0067 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.
Other instructions, from other repositories
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.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
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.
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.