Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/foursecondfivefour/aether-linux-mcp-serverWrote 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/rules/foursecondfivefour/aether-linux-mcp-server/aether-mcp)<a href="https://agentmods.dev/rules/foursecondfivefour/aether-linux-mcp-server/aether-mcp"><img src="https://agentmods.dev/badge/rules/foursecondfivefour/aether-linux-mcp-server/aether-mcp/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/rules/foursecondfivefour/aether-linux-mcp-server/aether-mcp"><img src="https://agentmods.dev/badge/rules/foursecondfivefour/aether-linux-mcp-server/aether-mcp.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 | $0.00262 | $0.00262 |
| Opus 5.5 | $0.00105 | $0.00105 |
| Sonnet 5.5 | $0.00052 | $0.00052 |
| Haiku 4.5 | $0.00026 | $0.00026 |
Grade A, and why
aether-mcp 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 1mo 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
AETHER_02 Cursor Rules
AETHER_02 is a Rust MCP server for Linux administration over stdio. Keep stdout reserved for MCP JSON-RPC. All logs, diagnostics, and audit messages must go to stderr.
Safety
- Do not use shell interpolation (
bash -c,sh -c,system()) for tool actions. - Use direct syscalls via
nix/libcorstd::process::Commandwith explicit argv. - Require
force: truefor destructive changes. - Require
.envfeature gates for kernel, mount, partition, ptrace, BPF, namespace, or token/capability operations. - Canonicalize paths and validate parameters at the tool boundary.
Build Checks
Run before submitting changes:
cargo fmt --check
cargo clippy -- -D warnings
cargo test
cargo build --release
Tool Map
process_control, file_system, package_manager, system_config, service_manager, gui_automation, system_info, network_manager, user_management, security_audit, hardware_control, system_automation.
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.
- 1mo ago First seen · 32 lines · 262 tokens per session scan A 95998ef06ac8
aether-mcp is a cursor rule published in the GitHub repository foursecondfivefour/aether-linux-mcp-server (0 stars, last pushed 3mo ago), licensed MIT. It adds 262 tokens to every session, about $0.0010 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.
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