Home / Skills / back-of-the-envelope
back-of-the-envelope
proyecto26/system-design-skillsSkill
This skill should be used when the user needs to "estimate QPS", "back-of-the-envelope" (BOTEC) numbers, "how much storage / bandwidth", "how many servers", "peak load", "capacity planning", or wants the standard latency / throughput / availability numbers to ground a design (latency table, QPS rates, powers of two, nines). Use it whenever a design decision hinges on scale — convert any "high traffic" / "huge data" phrase into concrete numbers before choosing components, even if the user doesn't say "estimate".
Why this score
This repo hosts 10 skills, so its 93 stars are split between them (about 9 each) for scoring.
Popularity score: 48/100 from public GitHub signals only. It shows how widely used and maintained this is, not how well it works. Not included yet: the fake-star check. The security scan is shown separately and doesn't change the score. How we rank
Security
Scanned Nov 4, 2026 at commit a70772efb956, with Cisco's open-source skill-scanner.
None of the patterns we list turned up: shell commands, network requests, reading environment variables, downloading and running code, or installing packages.
A scan lists patterns in the code. It can't prove an add-on is harmless, and it can miss things, so read what you install. How we scan
Alternatives
Other makers' add-ons that do the same job, next to this one.
| Name | Score | Stars | Context | Updated |
|---|---|---|---|---|
| This oneback-of-the-envelope proyecto26/system-design-skills · Skill | 48 | ★ 93 | ≈134 always | 5mo ago |
| hand-back ilang-ai/autocode · Skill Both about back and table | 55 | ★ 104 | ≈84 always | 20d ago |