What is asfw-mcp-control-plane?

A guide for inspecting and safely operating a local control service for FireWire devices. It covers device discovery, driver status, protocol information, and guarded control requests.

Use it to check FireWire nodes, inspect driver and protocol status, discover available control tools, and send explicitly authorized control requests.

It avoids manually building complex connections or guessing whether the device service is healthy. It also limits actions when the service reports a degraded or unavailable state.

asfw-mcp-control-plane — Skill for Codex by mrmidi

Install

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.

Any agent

npx skills add mrmidi/ASFireWire --skill asfw-mcp-control-plane

Clone the repo

git clone --depth 1 https://github.com/mrmidi/ASFireWire

Made for: Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mrmidi/asfirewire/asfw-mcp-control-plane/github.svg)](https://agentmods.dev/skills/mrmidi/asfirewire/asfw-mcp-control-plane)

Your own site

<a href="https://agentmods.dev/skills/mrmidi/asfirewire/asfw-mcp-control-plane"><img src="https://agentmods.dev/badge/skills/mrmidi/asfirewire/asfw-mcp-control-plane/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/mrmidi/asfirewire/asfw-mcp-control-plane"><img src="https://agentmods.dev/badge/skills/mrmidi/asfirewire/asfw-mcp-control-plane.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 5,062 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00056	$0.05062
Opus 5	$0.00028	$0.02531
Sonnet 5	$0.00011	$0.01012
Haiku 4.5	$0.00006	$0.00506

Measured 10d ago against content hash cc4b80e47484, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

asfw-mcp-control-plane 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 10d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (install.sh, scripts/asfw_mcp.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/asfw-mcp-control-plane/SKILL.md · 407 lines

How it starts

The opening of the file, as written. The whole thing — 407 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ASFW MCP Control Plane

Use the bundled client instead of reconstructing MCP HTTP/SSE sessions or pasting large tool schemas into the conversation.

Default workflow

Run these commands from the ASFireWire repository root.

Confirm the app-hosted MCP server is enabled. The default local endpoint is http://127.0.0.1:8766/mcp, which is also the client's built-in DEFAULT_ENDPOINT, so no export is needed in the normal case.

The port is user-configurable in the app's MCP Control Plane settings. On Connection refused, read the port shown in that panel and set the endpoint explicitly rather than assuming the server is down:
```
export ASFW_MCP_ENDPOINT=http://127.0.0.1:<port>/mcp
```
Ask the versioned health resource whether deeper reads are trustworthy:
```
python3 skills/asfw-mcp-control-plane/scripts/asfw_mcp.py health
```
ready permits targeted read-only diagnostics. degraded permits only high-level inspection until its reasons are resolved. unavailable means do not infer driver state. Preserve expectedGeneration for any follow-up bus request.
Run the compact read-only summary when node or protocol detail is needed:
```
python3 skills/asfw-mcp-control-plane/scripts/asfw_mcp.py summary
```
Use tools or resources only when the summary lacks the needed detail.

Call a read tool with typed JSON arguments only after checking its schema:

python3 skills/asfw-mcp-control-plane/scripts/asfw_mcp.py tools
python3 skills/asfw-mcp-control-plane/scripts/asfw_mcp.py call asfw_read_quadlet '{"nodeId":0,"generation":9,"addressHigh":65535,"addressLow":4026532864}'

Pass --endpoint or set ASFW_MCP_ENDPOINT when the server uses a non-default loopback port.

Config-ROM explorer

asfw_get_config_rom is a read-only projection of the driver's discovery cache. It never starts a ROM fetch and never issues a FireWire transaction. First obtain the current nodeId and generation from summary; after any bus reset, refresh them before asking for another view.

Read the full file on GitHub · 407 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

10d ago First seen · 407 lines · 56 tokens per session scan A cc4b80e47484

Subscribe to this mod's changes

asfw-mcp-control-plane is a skill published in the GitHub repository mrmidi/ASFireWire (139 stars, last pushed 2d ago), licensed Apache-2.0. It adds 56 tokens to every session and 5,062 once invoked, about $0.0003 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.

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