Build the system that prompts your agents. A teaching repo for loop engineering: chapters, an annotated reading list, copy-paste prompts, a runnable example, and a portable agent skill

Teach your AI to draw correct, beautiful draw.io diagrams — declarative layout engine, ground-truth stencils, structural validator, vision self-check. AWS · Azure · GCP · Databricks · BPMN. Zero dependencies.

A ServiceNow MCP server, and the skill guides that teach an agent to use it. 400+ snow_* tools over stdio or streamable HTTP, loaded on demand so the catalog fits a context window, plus blast-radius impact analysis. 57 ServiceNow SKILL.md guides. Works with any MCP client; on npm as @serac-labs/servicenow-mcp.