AI Engineering from Scratch is a free, open-source curriculum that teaches people to build AI systems through lessons and reusable artifacts such as prompts, skills, agents, and MCP servers. It is for learners who want practical foundations or want to create AI applications, and the catalogue skills support parts of that curriculum.
Borrowing it
Nothing to install: this file belongs to rohitg00/ai-engineering-from-scratch. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/rohitg00/ai-engineering-from-scratch/main/.claude/skills/blueprint-figure/SKILL.mdgit clone --depth 1 https://github.com/rohitg00/ai-engineering-from-scratchWrote 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.
[](https://agentmods.dev/skills/rohitg00/ai-engineering-from-scratch/blueprint-figure)<a href="https://agentmods.dev/skills/rohitg00/ai-engineering-from-scratch/blueprint-figure"><img src="https://agentmods.dev/badge/skills/rohitg00/ai-engineering-from-scratch/blueprint-figure/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/rohitg00/ai-engineering-from-scratch/blueprint-figure"><img src="https://agentmods.dev/badge/skills/rohitg00/ai-engineering-from-scratch/blueprint-figure.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00088 | $0.02624 |
| Opus 5.5 | $0.00035 | $0.01050 |
| Sonnet 5.5 | $0.00018 | $0.00525 |
| Haiku 4.5 | $0.00009 | $0.00262 |
Grade A, and why
blueprint-figure scanned grade A with 0 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 24d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blueprint Figure
This skill draws one static SVG figure that explains one mechanism of a real system. The figure uses the real names from the system: ids, field names, method names, status codes and sequence numbers. It sits on a light paper panel and uses a small set of hues with fixed meanings. It stays readable at 640 units wide on screen and in print. Claude, Cursor, Codex, OpenClaw, Hermes, or any agent that reads SKILL.md can use it. The sibling skill course-style holds the full course tokens. This skill copies the tokens it needs, so it works alone.
When to use
- A lesson, README or manual needs a picture of how parts of a system talk, store data, or change state.
- You have a capture, a log, a spec or source code that gives the real names.
- The claim fits one of the nine kinds below.
When not to use
- The figure must move or respond to a slider. Use the sibling skill
motion-figure. - The subject is a physical machine explainer with depth and controls. Use the sibling skill
isometric-explainer. - The data is a chart of numbers over many points. Use a chart tool.
- You do not have real names for the parts. Get a capture or a source first.
Method
- Write the claim first. One sentence, at most 28 words, that the figure proves.
- Pick one kind from the table below. If two kinds fit, draw two figures.
- Collect the real names from the source: parties, fields, methods, codes, sequence numbers.
- Write the hue table for the figure set before you draw (see "Colour").
- Sketch the layout on the 640-unit grid. Keep content between x 20 and x 620.
- Draw the figure with a script. Start from
templates/figure.mjs. Do not edit the SVG by hand. - Run the script. It stops on a label that is too small, too wide, or outside the figure.
- Run the checks in
references/checks.md. Fix every finding. - Render the SVG to PNG and look at it at 100% and at 50% width.
- Write the caption: the bold claim, how to read the figure, then the source.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 24d ago First seen · 192 lines · 88 tokens per session scan A 7f67143d3952
blueprint-figure is a skill published in the GitHub repository rohitg00/ai-engineering-from-scratch (77,007 stars, last pushed yesterday), licensed MIT. It adds 88 tokens to every session and 2,624 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-14.
blueprint-figure compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| blueprint-figurerohitg00/ai-engineering-from-scratch | Skill | 77k | yesterday | MIT | A | 88 | Claude Code |
| mermaid-diagramswpank/ai | Skill | 12 | 8mo ago | none | A | 77 | Claude Code, Codex |
| show-mehumanlayer/humanlayer | Skill | 13k | yesterday | Apache-2.0 | A | 25 | Claude Code |
| fireworks-tech-graphyizhiyanhua-ai/fireworks-tech-graph | Skill | 12k | 16d ago | MIT | A | 49 | Claude Code, Codex |
| architecture-diagrammateaix/mateclaw | Skill | 1.2k | yesterday | Apache-2.0 | A | 15 | Claude Code, Codex |
| deck-course-modulenexu-io/html-anything | Skill | 9.4k | 24d ago | Apache-2.0 | A | 25 | Claude Code, Codex |
| wcag-guideCommunity-Access/accessibility-agents | Skill | 435 | 7d ago | MIT | A | 20 | Claude Code, Codex |