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Use when updating Lingui catalogs or fixing translations

Write synthesisable Verilog-2005 for an iCE40 FPGA and take it to a bitstream — the language subset that synthesises, the testbench shape the pane draws waves from, the iCEBreaker pinout, how to read the utilisation and Fmax report, the mistakes that cost you a day (inferred latches, multi-driven nets, blocking assignments in sequential logic, missing reset), and ready-made UART / PWM / debounce blocks. Use whenever writing, simulating, synthesising or debugging RTL in this workspace.

Write documents in Typst — papers, spec sheets, reports, letters, slides — compile them to PDF with the pinned typst binary, read its diagnostics, and keep the pane current. Use for any request that ends in a PDF or a printed page.

Use in every Trail of Bits Skills workspace inside Harness, before any audit skill — the findings.json format the report pane is built from, which Trail of Bits skill serves which audit phase, and how their plugin features (plugin root, named sub-agents, Workflow scripts, fp-check's gates) work when their skills are linked rather than installed as plugins.

URDF robot description authoring and validation. Use when creating, editing, inspecting, validating, or debugging `.urdf` files, robot links, joints, limits, inertials, visual/collision geometry, mesh references, frame conventions, or robot-description artifacts. Use the SRDF skill for MoveIt2 semantic groups and IK/path-planning semantics; use the CAD skill for STEP/STL/3MF/DXF/GLB outputs.

MoveIt2 SRDF authoring, validation, and planning-semantics workflow. Use when creating, editing, inspecting, or validating `.srdf` files, MoveIt planning groups, virtual joints, passive joints, end effectors, group states, disabled collisions, URDF-paired planning semantics, or SRDF handoff for live review. Use the URDF skill for robot structure, the SDF skill for simulator descriptions, and the cad-viewer skill for rendering and live review links.

Review DXF and STEP/STP uploads for SendCutSend.com orders using its ordering guide, catalog, and specs. Use only for SendCutSend.com preflight reports covering upload readiness, selected material/SKU/thickness/service availability, and service-specific checks for laser cutting, CNC routing, bending, tapping, countersinking, hardware insertion, and finishing.

SDFormat/SDF model and world authoring, validation, and simulator handoff. Use for `.sdf` files, SDFormat XML, models, worlds, links, joints, poses, frames, inertials, visual/collision geometry, mesh URIs, sensors, lights, physics, plugins, includes, Gazebo, static SDF review, or simulator-specific metadata. Do not use for signed-distance-field geometry.

Generate, regenerate, and validate 2D DXF drawings from Python build123d sources. Use for DXF files, `.py` drawing scripts, @dxf models, 2D profiles, outlines, templates, gaskets, panels, flat patterns, laser/plasma/waterjet cut layouts, and 2D drawing exports of CAD geometry.

Start CAD Viewer and return review links for CAD and robot-description files. Use when visually reviewing `.step`, `.stp`, `.glb`, `.stl`, `.3mf`, `.dxf`, `.urdf`, `.srdf`, or `.sdf` files, especially when handed off from CAD, URDF, SRDF, or SDF generation skills.

Create, modify, inspect, and validate parametric CAD parts and assemblies authored as cadgen model scripts. Use for natural-language CAD specs, reference images, 2D technical drawings, STEP/STP generation or direct inspection, Python CAD source, source-level joints, selector references, geometry facts, measurements, mating deltas, snapshots, and STL/3MF/native GLB outputs from CAD geometry. Also covers project structure for multi-part CAD work - src/ for model scripts and shared code, format folders (STEP/, DXF/, STL/) for raw outputs, naming, and commit policy for projects with several @step/@dxf model scripts and imported source files; use it when starting a CAD project with more than a couple of models, when asked how to organize CAD code and artifacts, or when growing a flat folder of models into a project.

Write a live-coded track as a Strudel pattern — mini-notation, synths, effects, song structure — and check it with the verdict. Use whenever the workspace holds a .strudel file or the user asks for a beat, a groove, a bassline, a loop, a track, or music in the pane.

Create and inspect simulation projects in the SimSkill Harness workspace, including its local starter and optional upstream integration.

Run a decision through a panel of coding agents from different vendors — writing the motion, seating the room, the sealed-openings protocol, tagging the claim map, pressing a split, and writing a decision that picks and keeps its dissent. Read before opening a room.

Build molecules with RDKit — from SMILES or a scaffold, analogues and series (each with its parent), properties (MW, cLogP, TPSA, Lipinski, Veber, QED, alerts), similarity and substructure search, conformer ensembles written as SDF for the pane. Use for any request that ends in a molecule, a property or a chemical series.

Use this skill when learning about new features, game objects, components, and rendering capabilities added in Phaser 4. Covers Filters, RenderNodes, CaptureFrame, Gradient, Noise, SpriteGPULayer, TilemapGPULayer, Lighting component, RenderSteps, and new tint modes. Triggers on: new in v4, Phaser 4 features, RenderNode, SpriteGPULayer, CaptureFrame, Gradient game object, Noise game object, new tint modes. For migrating v3 code to v4, see the v3-to-v4-migration skill instead.

Use this skill when migrating a Phaser 3 project to Phaser 4, or when a user asks about breaking changes, API differences, or how to update their v3 code. Covers renderer changes (pipelines to render nodes), FX/masks to filters, tint system, camera matrix, texture coordinates, DynamicTexture, shaders, lighting, removed game objects, and a full migration checklist. Triggers on: migrate, upgrade, v3 to v4, breaking changes, Phaser 3 to 4, migration guide, update from v3.

Use this skill when animating properties over time in Phaser 4. Covers tweens, tween chains, easing functions, stagger, yoyo, repeat, callbacks, number tweens, and the TweenManager. Triggers on: tween, ease, animate, this.tweens.add, tween chain, stagger.

Use this skill when using timers and time-based events in Phaser 4. Covers TimerEvent, delayed calls, looping timers, the Clock plugin, and time scaling. Triggers on: timer, delay, delayedCall, TimerEvent, Clock, time event.

Use this skill when working with tilemaps in Phaser 4. Covers loading Tiled JSON maps, creating tilemap layers, tile collision, dynamic tiles, tile properties, and tilemap camera culling. Triggers on: Tilemap, Tiled, tilemap layer, tile collision, tile properties.

Use this skill when displaying text in Phaser 4. Covers Text game objects, BitmapText, web fonts, text styling, word wrap, alignment, padding, and dynamic text content. Triggers on: Text, BitmapText, this.add.text, font, word wrap, text style.

Use this skill when creating Sprites or Images in Phaser 4. Covers factory methods, texture/frame selection, position, scale, rotation, tint, flip, alpha, origin, depth, and the component mixin system. Triggers on: Sprite, Image, this.add.sprite, this.add.image, texture, setTint, setAlpha.

Use this skill when working with Phaser 4 scenes. Covers scene lifecycle methods, scene transitions, parallel scenes, scene communication, sleeping, pausing, restarting, and the SceneManager. Triggers on: Scene, scene lifecycle, preload, create, update, scene transition, SceneManager.

Use this skill when making a Phaser 4 game responsive or handling display scaling. Covers ScaleManager, scale modes (FIT, RESIZE, EXPAND, ENVELOP), auto-center, fullscreen, and browser resize handling. Triggers on: ScaleManager, responsive, resize, fullscreen, FIT, scale mode.

Use this skill when using RenderTexture or DynamicTexture in Phaser 4. Covers drawing game objects to textures, dynamic texture creation, snapshot/screenshot, stamps, and off-screen rendering. Triggers on: RenderTexture, DynamicTexture, snapshot, draw to texture, stamp.

Use this skill when using Matter.js physics in Phaser 4. Covers rigid bodies, constraints, composite bodies, sensors, collision filtering, world configuration, and advanced physics shapes. Triggers on: Matter, matter physics, constraint, joint, rigid body, sensor.

Use this skill when using Arcade Physics in Phaser 4. Covers enabling physics, velocity, acceleration, gravity, collisions, overlap, world bounds, physics groups, static bodies, and collision categories. Triggers on: physics, arcade, velocity, gravity, collide, overlap, bounce, physics body.

Use this skill when loading assets in Phaser 4. Covers the Loader plugin, loading images, spritesheets, atlases, audio, JSON, tilemaps, bitmap fonts, and tracking load progress. Triggers on: preload, this.load, asset loading, spritesheet, atlas, load progress.

Use this skill when handling user input in Phaser 4. Covers keyboard keys, mouse clicks and movement, touch events, pointer handling, drag and drop, hit areas, interactive objects, and gamepad support. Triggers on: keyboard, mouse, touch, pointer, drag, drop, click, input, gamepad, cursor keys.

Use this skill first in a Harness Phaser workspace. The project layout, the Vite dev-server pane and its live reload, the webview keyboard-focus rule (click-to-play gate and on-screen touch buttons), procedural art with no asset files, and .harness/verdict.json. Triggers on: Harness, the pane, dev server, keyboard focus, click to play, touch buttons, verdict, workspace layout, new game.

Use this skill when using Groups or Containers in Phaser 4. Covers organizing game objects, object pooling, batch operations, and nested transforms with Containers. Triggers on: Group, Container, object pool, getFirstDead, children.

Use this skill when drawing shapes and graphics in Phaser 4. Covers the Graphics game object, lines, rectangles, circles, arcs, polygons, gradients, fill, stroke, and generated textures. Triggers on: Graphics, draw shape, fillRect, lineStyle, polygon, arc.

Use this skill when using Phaser 4 math and geometry utilities. Covers vectors, rectangles, circles, triangles, polygons, random number generation, angles, distance, interpolation, and snapping. Triggers on: Vector2, Rectangle, Circle, math, distance, angle, random, lerp.

Use this skill when creating a new Phaser 4 game instance or configuring GameConfig options. Covers renderer selection, canvas setup, scaling, pixel art, FPS settings, boot sequence, and all config sub-objects. Triggers on: new Phaser.Game, GameConfig, game setup, renderer, pixel art, FPS.

Use this skill when working with Phaser 4 game object components and the mixin system. Covers Transform, Alpha, Tint, Origin, Depth, Flip, Mask, GetBounds, Lighting, and other shared component behaviors. Triggers on: component, mixin, transform, mask, bounds, lighting.

Use this skill when applying visual filters or post-processing effects in Phaser 4. Covers bloom, blur, glow, color matrix, barrel distortion, displacement, custom shaders, and the filter pipeline. Triggers on: filter, post-processing, shader, bloom, blur, glow, color effects.

Use this skill when working with the Phaser 4 event system. Covers EventEmitter, scene events, game events, custom events, and event-driven communication. Triggers on: events, on, emit, EventEmitter, scene events, listeners.

Use this skill when using the Phaser 4 DataManager to store custom key-value data on game objects, listen for data change events, or manage game state. Triggers on: setData, getData, data events, custom data storage.

Use this skill when working with curves and paths in Phaser 4. Covers splines, bezier curves, lines, ellipses, path followers, and mathematical curve types. Triggers on: curve, path, spline, bezier, path follower.

Use this skill when working with cameras in Phaser 4. Covers camera effects (shake, fade, flash, pan, zoom), following sprites, scroll, bounds, viewports, multiple cameras, and minimap. Triggers on: camera, viewport, scroll, zoom, follow, shake, fade.

Use this skill when adding audio or sound to a Phaser 4 game. Covers loading audio, playing sounds, music, volume, spatial audio, Web Audio API, and SoundManager. Triggers on: sound, audio, music, volume, mute.

Use this skill when creating or controlling sprite animations in Phaser 4. Covers spritesheets, atlases, AnimationManager, AnimationState, play/stop/chain, frame callbacks, and animation events. Triggers on: sprite animation, spritesheet, play animation, animation frames.

Use this skill when working with Phaser 4 utility functions, actions, alignment, grid layout, or batch operations on game objects. Triggers on: align, grid layout, actions, set operations on groups of game objects.

Simulate robots and scenes with MuJoCo — Menagerie robots (Unitree Go2, G1, H1, Berkeley Humanoid, Booster T1), your own MJCF, controllers and policies — record rollouts the pane runs as a live simulation, and train with MJX and MuJoCo Playground. Use for any request that ends in a simulation, a rollout or a policy.

Build or update the person's About You — a short profile of how they work, from their own messages across every agent and what their agents saved about them. Use when asked to "build my About You", "update About You", "what do you know about me", or to summarize how they work.

Write a keynote-grade slide deck in Marp Markdown (deck.md) — the structure of a great talk, the copy rules, the two keynote themes and their slide classes, offline art (wallpapers, charts, device frames), the check, and the export.

Check if a marimo notebook is compatible with WebAssembly (WASM) and report any issues.

Write a marimo notebook in a Python file in the right format.

Convert a Jupyter notebook (.ipynb) to a marimo notebook (.py).

Generate anywidget components for marimo notebooks.

Animate explanations with Manim Community — proofs, transforms, algorithms, graphs, data — as Python scenes rendered to MP4, and keep the pane playing the latest render. Use for any request that ends in an animation or an explainer video.

Create and inspect audio projects in the JUCE Agent Toolkit Harness workspace, including its local starter and optional upstream integration.

Inspect Harness sessions, explain activity and resource readings, preview cleanup, and stop or open explicitly selected sessions through their owning daemons.

Build and verify a Babylon.js game progressively in OpenHarness's live Game Viewer.

Create and inspect simulation projects in the Foam-Agent Harness workspace, including its local starter and optional upstream integration.

Create and inspect robotics projects in the DimOS Harness workspace, including its local starter and optional upstream integration.

Create and inspect generative media projects in the Comfy MCP Harness workspace, including its local starter and optional upstream integration.

Write and fix circuits in CircuitJS1's text format — the `$` options header, element lines on a 16-px grid, scope `o` lines, slider `38` lines, layout rules, and the workflow that keeps the pane moving. Use this for every circuit in this workspace, whether writing a new `circuit.txt`, editing one, or reading the verdict's findings.

Create and inspect architecture projects in the Bonsai MCP Harness workspace, including its local starter and optional upstream integration.

Model objects and scenes with Blender's Python (bpy) headless — primitives, modifiers, materials, collections, cameras, lights, animation — export glTF the 3D pane shows live, render stills and turntables, export STL. Use for any request that ends in a 3D model, a rendered shot or a glTF.