Train Pose
ruvnet/RuView
Train/evaluate WiFi pose models honestly — camera-supervised (MediaPipe + CSI) and camera-free (WiFlow), always checked against the mean-pose baseline before any PCK is quoted.
A skill your agent uses for nuPlan actor-state objects, SE2 poses, vehicle footprints, tracked objects, coordinate transforms, geometric distances, interpolation, angle wrapping, and tensor…
Custom licenceAuto-check passed
Install Core Geometry
$ npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill core-geometry --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry .claude/skills/core-geometry && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "core-geometry" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry into .claude/skills/core-geometry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-geometry", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometryType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill core-geometry --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry .agents/skills/core-geometry && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "core-geometry" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry into .agents/skills/core-geometry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-geometry", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill core-geometry --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry .cursor/skills/core-geometry && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "core-geometry" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry into .cursor/skills/core-geometry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-geometry", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/VectorSpaceLab/AREX-Skill.git --path skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill core-geometry --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry .gemini/skills/core-geometry && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "core-geometry" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry into .gemini/skills/core-geometry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-geometry", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install VectorSpaceLab/AREX-Skill core-geometryInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry .github/skills/core-geometry && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "core-geometry" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry into .github/skills/core-geometry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-geometry", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill core-geometry --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry .opencode/skills/core-geometry && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "core-geometry" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry into .opencode/skills/core-geometry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-geometry", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
core-geometry- GitHub stars
- 330
- Token cost
- ~1.6k tokens
- SKILL.md length
- 603 words
- Files
- 5 (incl. scripts, references)
- Skills in repo
- 159
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses for nuPlan actor-state objects, SE2 poses, vehicle footprints, tracked objects, coordinate transforms, geometric distances, interpolation, angle wrapping, and tensor…
- Works in 6 steps: Name the frame and reference point.… → Normalize units. Positions and box… → Choose a typed representation. Use… → …
- NuPlan actor-state objects
- SKILL.md covers Route before acting, Operating procedure, Fast API map and Minimal safe check, plus 1 more section
- Runs Python scripts from its folder; calls python
What it does
Core Geometry is an agent skill from VectorSpaceLab/AREX-Skill. Use for nuPlan actor-state objects, SE2 poses, vehicle footprints, tracked objects, coordinate transforms, geometric distances, interpolation, angle wrapping, and tensor geometry; route database/map, simulation/evaluation, and training questions to their sibling routes.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `references/api-reference.md`, `references/troubleshooting.md` and `references/workflows.md`).
The repository describes itself as: A Skill Library for Automated Machine Learning.
When your agent uses it
- NuPlan actor-state objects
- Vehicle footprints
- Tracked objects
- Coordinate transforms
Example prompts
- “/core-geometry”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Name the frame and reference point. State whether each pose is global or
- Normalize units. Positions and box dimensions are meters; velocity is
- Choose a typed representation. Use StateSE2 for [x, y, heading],
- Validate before composing. Check matrix and tensor shapes, finite
- Construct from the actual reference. Use
- Check an invariant. Round-trip a pose/matrix, verify the expected
What it can do on your machine
Read from SKILL.md and the folder at commit ac3fe1a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Core Geometry loads about 1.6k tokens when it runs, and up to ~9.5k if it reads all its reference files. Until then it costs about 71 tokens; SKILL.md has 603 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 603 words (~1,559 tokens).
“Use this route for the reusable state and geometry layer of nuPlan. It covers nuplan.common.actor_state, nuplan.common.geometry, and the small tensor-math helpers that operate on those representations. It is the right entry point when a request mentions StateSE2, EgoState, OrientedBox, a…”
- name
- core-geometry
- disable-model-invocation
- true
- metadata.disco-role
- operating
- license
- NOASSERTION
Files
SKILL.md and 4 other files (scripts, references) in skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry of VectorSpaceLab/AREX-Skill.
- SKILL.md
- references/api-reference.md
- references/troubleshooting.md
- references/workflows.md
- scripts/geometry_smoke.py
Open the folder on GitHubat commit ac3fe1a
Compare with similar skills
Core Geometry next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Core Geometry this skillVectorSpaceLab/AREX-Skill | 330 | — | ~1.6k | Automated safety check: Pass | Custom licence | |
| Train Poseruvnet/RuView | 97k | — | ~504 | Automated safety check: Pass | MIT | |
| Swift Actor Persistenceaffaan-m/ECC | 276k | 3 repos | ~871 | Automated safety check: Pass | MIT | |
| Swift Actor Persistenceaffaan-m/ECC | 276k | 4 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Object Altthedaviddias/Front-End-Checklist | 74k | — | ~429 | Automated safety check: Pass | MIT | |
| Apify Actorizationsickn33/agentic-awesome-skills | 47k | 2 repos | ~1.7k | Automated safety check: Pass | MIT |
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Swift Actor Persistence
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Object Alt
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Questions about Core Geometry
What does Core Geometry do?
A skill your agent uses for nuPlan actor-state objects, SE2 poses, vehicle footprints, tracked objects, coordinate transforms, geometric distances, interpolation, angle wrapping, and tensor…. Core Geometry is an agent skill from VectorSpaceLab/AREX-Skill. Use for nuPlan actor-state objects, SE2 poses, vehicle footprints, tracked objects, coordinate transforms, geometric distances, interpolation, angle wrapping, and tensor geometry; route database/map, simulation/evaluation, and training questions to their sibling routes.
When should I use Core Geometry?
Core Geometry fits situations like: nuPlan actor-state objects; vehicle footprints; tracked objects; coordinate transforms.
How do I install Core Geometry in Claude Code?
Run `npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a claude-code`. Or copy the skill folder (skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry in VectorSpaceLab/AREX-Skill) into .claude/skills/core-geometry in your project. Claude Code loads it when a task matches its description.
How do I install Core Geometry in Codex?
Run `npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a codex`. Or copy the skill folder (skills/repositories/repo-skills/nuplan-devkit/sub-skills/core-geometry in VectorSpaceLab/AREX-Skill) into .agents/skills/core-geometry in your project. Codex loads it when a task matches its description.
Can I use Core Geometry in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add VectorSpaceLab/AREX-Skill --skill core-geometry -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/core-geometry, .gemini/skills/core-geometry, .github/skills/core-geometry and .opencode/skills/core-geometry in your project.
What does Core Geometry need to run?
Going by SKILL.md and its folder, Core Geometry needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Core Geometry access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Core Geometry safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Core Geometry use?
Core Geometry has a licence file (declared in SKILL.md) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Core Geometry use?
About 1.6k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7.9k tokens, read only when the agent opens those files.
What are the alternatives to Core Geometry?
Skills that share tags, products or a category with Core Geometry: Train Pose (ruvnet/RuView, 97k stars), Swift Actor Persistence (affaan-m/ECC, 276k stars), Swift Actor Persistence (affaan-m/ECC, 276k stars) and Object Alt (thedaviddias/Front-End-Checklist, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Core Geometry?
VectorSpaceLab (a GitHub organization) maintains it in VectorSpaceLab/AREX-Skill, which has 330 GitHub stars. The repository holds 159 skills in this directory. The repository was last updated on September 3, 2026.
Source: VectorSpaceLab/AREX-Skill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.