foxglove

foxglove is a skill for Claude Code from robium-ai/robium. It costs 118 tokens per session (5,800 once invoked), scanned B, original, MIT.

A robotics visualization workflow built around Foxglove, an application for viewing live or recorded robot data. It covers ROS 2 connections, MCAP recordings, layouts, and viewing robots running on remote servers.

In plain words
What is it for?
Use it to configure Foxglove Bridge for live ROS 2 data, record or play MCAP files, create viewing layouts, and connect to robots running remotely or headlessly.
Why use it?
It provides a way to inspect robot data when the robot or simulation has no local display, and to replay recorded sessions for analysis or sharing.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the robium plugin — 70 skills, 1 agent, 6 hooks shipped together

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.

agentmods
npx agentmods add skills/robium-ai/robium/1.5.1
Any agent
npx skills add robium-ai/robium --skill 1.5.1
Clone the repo
git clone --depth 1 https://github.com/robium-ai/robium

Made for: Claude Code.

Or install robium, the plugin that ships this one along with the rest of its 70 skills, 1 agent, 6 hooks.

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.

agentmods badge for foxglove

README.md
[![agentmods](https://agentmods.dev/badge/skills/robium-ai/robium/1.5.1.svg)](https://agentmods.dev/skills/robium-ai/robium/1.5.1)
Your own site
<a href="https://agentmods.dev/skills/robium-ai/robium/1.5.1"><img src="https://agentmods.dev/badge/skills/robium-ai/robium/1.5.1.svg" alt="Measured on agentmods" height="20"></a>
Per session 118 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,800 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00118 $0.05800
Opus 5 $0.00059 $0.02900
Sonnet 5 $0.00024 $0.01160
Haiku 4.5 $0.00012 $0.00580

Measured 6d ago against content hash 134440a19d2a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

foxglove scanned grade B with 2 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo apt install ros-$ROS_DISTRO-foxglove-bridge

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

was pinned down (2026-07-12, nav-trial demo, after ruling out curl header
Origin

Copies of this mod

4 near-identical copies found in the catalogue:

  • foxglove — 98% identical, 110 lines differ
  • foxglove — 95% identical, 118 lines differ
  • foxglove — 94% identical, 124 lines differ
  • foxglove — 84% identical, 239 lines differ
archive/foxglove/1.5.1/SKILL.md · 356 lines

How it starts

The opening of the file, as written. The whole thing — 356 lines — stays where its author put it; the contents beside it link to each section on GitHub.

foxglove

The remote/web visualization tool for robium: foxglove_bridge exposes a live ROS 2 graph over a WebSocket, and the Foxglove app (desktop or app.foxglove.dev in a browser) connects to it or opens a recorded MCAP file — the answer environments and gazebo route to whenever a robot or sim runs headless/remote and RViz2's local-display requirement doesn't fit. Two things changed over time and matter for how this skill is used: the bridge itself (foxglove_bridge, MIT-licensed, open source) moved its active development from foxglove/ros-foxglove-bridge (now ROS 1-only, maintenance mode) to the foxglove/foxglove-sdk monorepo, and the app that used to be free/open-source "Foxglove Studio" was discontinued in February 2024 (last open-source release v1.87.0, MPL-2.0) in favor of the current closed-source, commercial "Foxglove" 2.x app — which does still ship a free tier the product page states is "free forever" for local/live visualization, separate from its paid Data Platform/cloud features. The bridge migration was confirmed via direct fetch of the foxglove/ros-foxglove-bridge and foxglove/foxglove-sdk GitHub repos this session; the free-tier claim was confirmed via direct fetch of foxglove.dev's pricing page, while the Studio-to-2.x licensing history was reconstructed via search-synthesis after the source blog post 404'd on direct fetch (see References) — re-verify before repeating either claim, since licensing terms are exactly the kind of thing that drifts.

When to use this skill

  • Setting up foxglove_bridge on a robot or sim host, building a layout, recording or replaying an MCAP file, or viewing a robot's data from a machine that isn't the robot itself.
  • The trigger phrases in the description: 'foxglove', 'mcap', visualizing a robot running on a remote server, sharing visualization with others, recording sessions for later analysis.
  • Any time environments or gazebo has already concluded the target is headless/remote and the next question is "how do I actually see it" — this skill is that answer.
  • Cross-references — go to the sibling skill instead when the question is:
    • Whether headless/remote is the deployment target at all, GPU passthrough, or the general local-vs-remote strategy → environments (load first if not already decided; this skill assumes that decision is made and just delivers the viz half of it).
    • Local desktop ROS debugging with a display attached → rviz2.
    • ML/data-centric logging outside ROS message types (policy rollouts, LeRobot episodes) → rerun — though LeRobot dataset episodes can also be served straight to the Foxglove app via lerobot-dataset-viz --display-mode foxglove (invocation is the lerobot skill's territory; verified 2026-07-12, manip-trial).
    • Choosing which viz tool fits the situation at all → visualization (routes here once Foxglove is the right choice).

Read the full file on GitHub · 356 lines

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.

  1. 6d ago First seen · 356 lines · 118 tokens per session scan B 134440a19d2a

Subscribe to this mod's changes

foxglove is a skill published in the GitHub repository robium-ai/robium (9 stars, last pushed 8d ago), licensed MIT. It adds 118 tokens to every session and 5,800 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.