architecture-primer SKILL.md skillA
architecture-primer from martinolivero/saas-builder is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add martinolivero/saas-builder/architecture-primer@git:20260605.5e4d680Pins git:20260605.5e4d680 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- martinolivero/saas-builder
- Path
skills/architecture-primer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260605.5e4d680, committed Jun 5, 2026
- Size
- 4,150 bytes
- Repository stars
- 4
- License
- MIT
This skill should be used when the user wants to design, plan, or decide the architecture of a system, app, or platform from scratch. Trigger phrases include "how do I structure this", "what architecture should I use", "how does this scale", "monolith or microservices", "what database", "what stack", "design the system", "how do I handle X users". Inspired by the System Design Primer. It runs a discovery phase, applies a decision tree, and outputs concrete architecture decisions with trade-offs.
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
# Architecture Primer This skill turns a vague "how should I build this?" into concrete, justified architecture decisions. It is based on the System Design Primer, adapted to favor shipping over over-engineering. Analogy: do not design a 10-lane highway before knowing if 10 cars or 10 million cars will use it. Measure the traffic first, then build the road. ## PHASE 1 — Discovery (mandatory before any decision) Never propose an architecture before completing discovery. Ask questions 2-3 at a time, in plain language, in these three blocks. Skip any question the user already answered. **Block A — Scale** - How many users do you expect at launch? And in 12 months? - Are users in one region or several countries? - Is usage steady, or does it spike (e.g. launches, business hours, campaigns)? **Block B — Nature of the system** - Does it read more than it writes, or the other way around? - What happens if it goes down for 1 hour — is it critical? - Does the data need immediate consistency, or is a short delay acceptable? **Block C — Context** - Is there a technical team, or just you? - Roughly what monthly infrastructure budget is realistic? - When do you need the MVP live? …
Read the whole file at its exact version.
How to install
mdr add martinolivero/saas-builder/architecture-primer@sha256:00e3ca5fce801366The line at the top of this page pins the label git:20260605.5e4d680, 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_z3al4pjkdhjsqbl2)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 5, 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 (4150 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
martinolivero/saas-builder · 4 stars · license MIT · pushed 2026-10-11 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_z3al4pjkdhjsqbl2 GET https://markdownregistry.com/api/v1/resolve?ref=martinolivero/saas-builder/architecture-primer GET https://markdownregistry.com/api/v1/blob/00e3ca5fce8013666f08c0ccc9855544f02b78eb9ff3805a4859243ccba4a1fd
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.