msitarzewski/agency-agents PR #729 — Add Data Visualization Engineer specialist — PR #729
msitarzewski/agency-agents · pull request #729 ·
Transcript
PlainEnglish
We're looking at pull request seven twenty-nine. This PR brings a new specialist agent to the agency-agents repository — a Data Visualization Engineer. A hundred fifty-two new lines across two files, no deletions. It's pure addition, extending the catalog with a visualization-focused expert.
PlainEnglish
Two main goals here. First, create the Data Visualization Engineer specialist agent with all the guidance needed for chart selection, accessibility, and performance. Second, register the agent in the README so users can discover it. And we're keeping the existing catalog structure intact — no disruptions to the patterns already in place.
PlainEnglish
The motivation is straightforward — the repository is a curated collection of AI specialist agents covering technical domains. Before this PR, there was no visualization expert. This change fills that gap, bringing guidance on a discipline that bridges design, perception science, and performance engineering.
Architecture
Let's see where the changes live. One new file under the engineering directory — the data visualization engineer agent spec, a hundred fifty-one lines of structured guidance. And one updated file — the README, which gets a single new table row pointing to the agent. Clean and focused.
Architecture
Here's the heart of the agent spec. YAML frontmatter at the top defines identity — name, description, color, emoji, and a vibe statement. Then critical rules: chart-type selection before aesthetics, perceptual honesty with zero baselines, colorblind-safe palettes tested for the eight percent of viewers with color vision deficiency, and performance budgets that guide when to use SVG, Canvas, or WebGL.
Architecture
The agent delivers production-ready guidance across five key areas. A chart-type selection table that maps data structure and question type to visual encodings. A perceptual honesty checklist ranking position, length, angle, area, and hue by quantitative precision. Colorblind-safe code examples for D3, Vega, and Canvas, grounded in the eight-percent CVD prevalence. Performance thresholds that tell you when to reach for SVG, Canvas, or WebGL. And an eight-step workflow from data audit through accessibility validation to deployment.
Architecture
Now the README update. A single table row slips in between the WordPress Shopping Cart Engineer and the Payments and Billing Engineer. Emoji, linked title, key topics — chart-type selection, perceptually honest encodings, colorblind-safe palettes, performance — and a three-word summary. The table structure and link format stay consistent with the existing catalog.
PlainEnglish
Here's the outcome. Before this PR, the repository had thirteen engineering specialists and a domain gap where visualization guidance should be. After, we have fourteen agents. The Data Visualization Engineer is discoverable in the README index, ready to guide users through chart selection, colorblind-safe design, and performance optimization across D3, Canvas, and WebGL.
PlainEnglish
We looked at YAML frontmatter structure, markdown formatting, README table insertion position, link validity, technical content accuracy — chart mappings and CVD prevalence grounded in established science — header hierarchy, and file endings. Everything checked out. No concerns to flag.
PlainEnglish
That's pull request seven twenty-nine. A clean catalog extension that adds visualization expertise without disrupting existing patterns. The agent spec lives at engineering slash engineering-data-visualization-engineer dot md, the README table entry at line one fifty-two, and a hundred fifty-one lines of guidance on chart selection, accessibility, and performance are now part of the catalog.
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