Borrowing it
Nothing to install: this file belongs to sandraschi/filesystem-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/sandraschi/filesystem-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/sandraschi/filesystem-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/sandraschi/filesystem-mcp/agents-md)<a href="https://agentmods.dev/instructions/sandraschi/filesystem-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/filesystem-mcp/agents-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/sandraschi/filesystem-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/filesystem-mcp/agents-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 | $0.00322 | $0.00322 |
| Opus 5.5 | $0.00129 | $0.00129 |
| Sonnet 5.5 | $0.00064 | $0.00064 |
| Haiku 4.5 | $0.00032 | $0.00032 |
Grade A, and why
filesystem-mcp AGENTS.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 27d 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.
What it actually says
filesystem-mcp — Agent Guide
Overview
FastMCP 3.2+ server for file system, Docker, system monitoring, and host context operations.
Tools
24 tools across 11 modules. Portmanteau tools use an operation enum parameter.
| Tool | Category | Mutates |
|---|---|---|
file_ops |
File read/write/edit/delete/move/copy | Yes |
dir_ops |
Directory list/create/remove | Some |
search_ops |
Grep, search, compare, find duplicates | No |
container_ops |
Docker container lifecycle | Yes |
infra_ops |
Docker images, networks, volumes | Yes |
compose_up/down/ps/logs/config/restart |
Docker Compose | Some |
monitor_get_* (8 tools) |
System metrics | No |
host_ops |
Host info and environment | No |
agentic_file_workflow |
LLM sampling-based file ops | Yes |
get_lock_status |
Concurrency lock diagnostics | No |
Ports
- Backend: 10742
- Frontend: 10743
Key Standards
- Concurrency-safe writes: per-path
asyncio.Lock+ atomicos.replace() - Structured responses:
_success_response,_error_response,_clarification_response - Dual transport: stdio (Claude Desktop) + HTTP (webapp)
Install docs: follow mcp-central-docs/standards/AGENT_INSTALL_REFERENCE.md
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.
- 27d ago Changed d23470ad7c64
- 2mo ago First seen · 32 lines · 322 tokens per session scan A b384877775d7
filesystem-mcp AGENTS.md is an instructions file published in the GitHub repository sandraschi/filesystem-mcp (7 stars, last pushed 7d ago), licensed MIT. It adds 322 tokens to every session, about $0.0013 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 2026-08-31.
filesystem-mcp AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| filesystem-mcp AGENTS.mdsandraschi/filesystem-mcp | Instructions file | 7 | 7d ago | MIT | A | 322 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |