What is rvcsi-record?

A command that converts raw Nexmon wireless measurements or a Nexmon packet capture into a validated .rvcsi file, a replayable JSON-lines capture format.

Use it to convert binary records or .pcap files from supported Nexmon hardware, choose the capture source and port, and prepare data for inspection, event detection, or calibration.

It separates invalid frames from usable data and reports how many frames were rejected before later analysis.

rvcsi-record — Command for Claude Code by ruvnet

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.

Clone the repo

git clone --depth 1 https://github.com/ruvnet/rvcsi

Made for: Claude Code.

Or install rvcsi, the plugin that ships this one along with the rest of its 5 commands, 1 agent.

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/commands/ruvnet/rvcsi/rvcsi-record.svg)](https://agentmods.dev/commands/ruvnet/rvcsi/rvcsi-record)

Your own site

<a href="https://agentmods.dev/commands/ruvnet/rvcsi/rvcsi-record"><img src="https://agentmods.dev/badge/commands/ruvnet/rvcsi/rvcsi-record.svg" alt="Measured on agentmods" height="20"></a>

Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 498 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.

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	$0.00030	$0.00498
Opus 5	$0.00015	$0.00249
Sonnet 5	$0.00006	$0.00100
Haiku 4.5	$0.00003	$0.00050

Measured 7d ago against content hash f8d89dd1ab93, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

rvcsi-record 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 7d 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.

plugins/rvcsi/commands/rvcsi-record.md · 18 lines

What it actually says

/rvcsi-record

Turn raw Nexmon CSI into a validated, replayable .rvcsi capture.

Parse $ARGUMENTS. Two source modes:
- --source nexmon (default): --in is a .bin of "rvCSI Nexmon records" (the napi-c shim's compact self-describing format).
- --source nexmon-pcap: --in is a real libpcap capture, typically tcpdump -i wlan0 dst port 5500 -w csi.pcap on a Raspberry Pi. --port overrides the CSI UDP port (default 5500); --chip pi5 (or another known chip) selects the AdapterProfile.
Run: rvcsi record --source <mode> --in <file> --out <file.rvcsi> [--chip …] [--port …] (or cargo run -p rvcsi-cli -- record … in a checkout).
Each frame is run through rvcsi_core::validate_frame; rejected frames are quarantined (dropped from the capture) — the command reports how many. The output .rvcsi is JSONL: line 1 is a CaptureHeader, every later line a CsiFrame.
Next: /rvcsi-inspect <file.rvcsi>, /rvcsi-events <file.rvcsi>, /rvcsi-calibrate --in <file.rvcsi>.

If there is no .pcap yet, tell the user how to capture one: on the Pi (with the nexmon_csi firmware patch active), tcpdump -i wlan0 dst port 5500 -w csi.pcap. There is no ESP32 source crate yet — for an ESP32 .csi.jsonl recording, use scripts/esp32_jsonl_to_rvcsi.py to produce a .rvcsi, then continue with the same toolchain.

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.

7d ago First seen · 18 lines · 30 tokens per session scan A f8d89dd1ab93

Subscribe to this mod's changes

rvcsi-record is a command published in the GitHub repository ruvnet/rvcsi (21 stars, last pushed 14d ago), licensed Apache-2.0. It adds 30 tokens to every session and 498 once invoked, about $0.0002 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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rvcsi-record