omni-fs-mcp: Instructions file for Claude Code

CLAUDE.md

omni-fs-mcp CLAUDE.md is an instructions file for Claude Code from vaayne/omni-fs-mcp. It costs 414 tokens per session, scanned A, original, MIT.

Development instructions for Omni-FS-MCP, a server that gives an agent file operations across storage services such as local disks, S3, WebDAV, FTP, HTTP, and memory storage. It covers setup, local runs, testing, building, and the project structure.

In plain words
What is it for?
It is for installing dependencies, running the server with local or HTTP access, trying storage backends, building the package, and understanding its main components.
Why use it?
It provides the commands and design details needed to work on or run the server, while noting that no tests or code-quality tools are currently configured.

Instructions file for Claude Code

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

This is vaayne/omni-fs-mcp's own configuration. It tells Claude Code how to work on omni-fs-mcp 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 omni-fs-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to vaayne/omni-fs-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.

Copy the file
curl -O https://raw.githubusercontent.com/vaayne/omni-fs-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/vaayne/omni-fs-mcp

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.

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README.md
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Your own site
<a href="https://agentmods.dev/instructions/vaayne/omni-fs-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/vaayne/omni-fs-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.

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<a href="https://agentmods.dev/instructions/vaayne/omni-fs-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/vaayne/omni-fs-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 414 This file is loaded in full into every session.
When invoked 414 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 $0.00414 $0.00414
Opus 5 $0.00207 $0.00207
Sonnet 5 $0.00083 $0.00083
Haiku 4.5 $0.00041 $0.00041

Measured 9d ago against content hash fba679dba467, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

omni-fs-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.

CLAUDE.md · 64 lines

What it actually says

Development Guide

Commands

# Install dependencies
uv sync

# Run tests (NOTE: No tests currently exist)
uv run pytest

# Run server locally
uv run omni-fs-mcp "memory://"
uv run omni-fs-mcp --transport http "memory://"

# Run with config
uv run omni-fs-mcp examples/demo_config.json
uv run omni-fs-mcp --transport http --config examples/demo_config.json --port 8080

# Build package
uv build

# Code quality (NOTE: No linting/formatting configured yet)
# Consider adding: ruff check src/ && ruff format src/ && mypy src/

Architecture

Core Components:

  • mcp_server.py - MCP server with 13 tools (7 file ops + 6 backend management)
  • backend_manager.py - Multi-backend management with health monitoring
  • dal.py - OpenDAL abstraction layer

Key Features:

  • Multi-backend support (local, S3, WebDAV, FTP, HTTP, memory, etc.)
  • Dual transport: stdio (local) and HTTP (remote)
  • Backward compatible single-backend mode
  • Read-only backend protection
  • Runtime backend registration/removal

Testing

# Memory backend for testing
uv run omni-fs-mcp "memory://"

# Multi-backend test config
echo '{
  "backends": [
    {"name": "memory1", "url": "memory://", "default": true},
    {"name": "memory2", "url": "memory://"}
  ]
}' > test_config.json

uv run omni-fs-mcp test_config.json

Development Tasks

Add Backend Types: Ensure OpenDAL supports it, test connection validation

Debug Issues: Set logging.basicConfig(level=logging.DEBUG) for detailed logs

Build System: Uses hatchling (modern PEP 517/621 compliant)

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. 9d ago First seen · 64 lines · 414 tokens per session scan A fba679dba467

Subscribe to this mod's changes

omni-fs-mcp CLAUDE.md is an instructions file published in the GitHub repository vaayne/omni-fs-mcp (1 stars, last pushed 11mo ago), licensed MIT. It adds 414 tokens to every session, about $0.0021 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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