example-d3-animation SKILL.md skillA
example-d3-animation from bintzgavin/helios is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bintzgavin/helios/example-d3-animation@git:20261009.c6b0c13Pins git:20261009.c6b0c13 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bintzgavin/helios
- Path
skills/examples/d3/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261009.c6b0c13, committed Oct 9, 2026
- Size
- 1,775 bytes
- Repository stars
- 122
- License
- Apache-2.0
Learn how to use D3.js with Helios for data visualization. Use when creating charts, graphs, or data-driven animations.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# D3.js Animation
Integrate D3.js with Helios by driving D3 scales and attributes using the Helios frame/time state.
## Quick Start
```typescript
import { Helios } from '@helios-project/core';
import * as d3 from 'd3';
const helios = new Helios({ duration: 5, fps: 60 });
const svg = d3.select('#chart');
// Data
const data = [10, 20, 30, 40, 50];
// Setup D3
const x = d3.scaleLinear().domain([0, 50]).range([0, 500]);
const bars = svg.selectAll('rect').data(data).enter().append('rect')
.attr('height', 20)
.attr('y', (d, i) => i * 25);
// Animate
helios.subscribe(({ currentFrame, fps }) => {
const time = currentFrame / fps;
// Update D3 attributes based on time
bars.attr('width', d => x(d) * Math.min(1, time));
});
```
## Key Patterns
### Frame-Driven Scales
Instead of using `d3.transition()`, use `helios.subscribe()` to update attributes on every frame. This ensures frame-perfect rendering and seeking.
```typescript
helios.subscribe((state) => {
const t = state.currentFrame / (state.duration * state.fps); // 0 to 1
// Interpolate data
const interpolatedData = data.map(d => d * t);
// Re-bind and render
…Read the whole file at its exact version.
How to install
mdr add bintzgavin/helios/example-d3-animation@sha256:b2ca08881035693aThe line at the top of this page pins the label git:20261009.c6b0c13, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_pi6y3tyv2ieismxv)
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Versions
The registry has recorded 1 version of this file, committed on Oct 9, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1775 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
bintzgavin/helios · 122 stars · license Apache-2.0 · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pi6y3tyv2ieismxv GET https://markdownregistry.com/api/v1/resolve?ref=bintzgavin/helios/example-d3-animation GET https://markdownregistry.com/api/v1/blob/b2ca08881035693ad12c0d5bebb9d50cb8df889da2ebdb99e16fd36e7ac4b9f8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.