Borrowing it
Nothing to install: this file belongs to Muvon/octofs. 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/Muvon/octofs/master/AGENTS.mdgit clone --depth 1 https://github.com/Muvon/octofsWrote 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/muvon/octofs/agents-md)<a href="https://agentmods.dev/instructions/muvon/octofs/agents-md"><img src="https://agentmods.dev/badge/instructions/muvon/octofs/agents-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 | $0.02829 | $0.02829 |
| Opus 5 | $0.01414 | $0.01414 |
| Sonnet 5 | $0.00566 | $0.00566 |
| Haiku 4.5 | $0.00283 | $0.00283 |
Grade A, and why
octofs 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 6d 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 — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Octofs — MCP Filesystem Tools Server
Standalone Rust binary that exposes filesystem tools (view, text_editor, batch_edit, extract_lines, shell, workdir) over the Model Context Protocol. Runs as stdio or HTTP server. Built on rmcp 1.3, tokio, axum. Apache 2.0, maintained by Muvon Un Limited.
Project Structure
src/
main.rs — Entry point: CLI dispatch, stdio/HTTP server startup, signal handling
cli.rs — Clap CLI: `octofs mcp [--path] [--bind] [--ssh-key] [--ssh-timeout]`
mcp/
mod.rs — McpToolCall struct, session root directory (OnceLock)
server.rs — OctofsServer (rmcp tool impl), SessionWorkdir, all Params structs
request_ctx.rs — Per-request hint queue (appended to every tool response)
shared_utils.rs — apply_head_truncation helper
fs/
mod.rs — Re-exports: execute_view, execute_text_editor, execute_batch_edit,
execute_extract_lines, execute_shell_command, execute_workdir_command
core.rs — resolve_path, file history (undo), execute_view, execute_text_editor,
execute_batch_edit, execute_extract_lines
file_ops.rs — view_file_spec, view_file_with_content_search, create_file_spec
text_editing.rs — str_replace_spec, batch_edit_spec, per-file async locking
directory.rs — Directory listing and content search (ignore crate + pure-Rust regex)
search.rs — Matcher + search_lines: literal/regex matching with context blocks
shell.rs — execute_shell_command, foreground/background, PGID process group cleanup
workdir.rs — execute_workdir_command, WorkdirResult
*_tests.rs — Unit tests for the matching production module
fs_tests.rs — Cross-module integration tests (cfg(test) only)
utils/
glob.rs — expand_glob_patterns_filtered (gitignore-aware, max 1000 files)
truncation.rs — estimate_tokens, truncate_to_tokens, format_content_with_line_numbers,
truncate_mcp_response_global
line_hash.rs — Composite line ids (N:hh), FNV1a-8 content hashes, verify_line_id
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.
- 6d ago First seen · 175 lines · 2,829 tokens per session scan A 5165f6d9f90b
octofs AGENTS.md is an instructions file published in the GitHub repository Muvon/octofs (11 stars, last pushed yesterday), licensed Apache-2.0. It adds 2,829 tokens to every session, about $0.0141 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 2026-08-30.
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.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.