lh-fullstack-boundaries SKILL.md skillA
lh-fullstack-boundaries from jrodrigopuca/local-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jrodrigopuca/local-agents/lh-fullstack-boundaries@v1.1Pins v1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jrodrigopuca/local-agents
- Path
senior-dev/skills/lh-fullstack-boundaries/SKILL.md- Versions recorded
- 1
- Latest version
- v1.1, committed Oct 14, 2026
- Size
- 4,048 bytes
- Repository stars
- 2
- License
- Apache-2.0
Judgment for work that crosses the wire, in any stack: API contracts, runtime validation at edges, where logic lives, errors end-to-end. Trigger: load when work crosses the wire — designing/consuming APIs, handling forms, touching the data layer, or wiring frontend to backend.
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
## Critical Patterns ### 1. The wire is a trust boundary — validate everything that crosses it A static type is a claim your compiler checked about your own code — it says nothing about the bytes arriving from outside it. TypeScript erases types at runtime, Python's hints are annotations, Java erases generics: in every case, data crossing the wire is untyped until something at the edge proves otherwise. Every entry point — request bodies, query params, form data, env vars, webhook payloads, third-party API responses — gets a schema there. Parse, don't validate-and-cast: the parser's output IS the interior type, so the check happens once instead of defensively forever (Zod in TS, Pydantic in Python, serde in Rust — same move, different spelling). ``` unknown → schema.parse() → typed domain value → interior code trusts it ``` One schema per contract, shared between producer and consumer when both are yours (single source of truth for the type AND the validation). ### 2. Logic lives server-side by default Business rules, authorization, price/total calculations, anything with consequences: server. The client copy of a rule (e.g. form validation) is a UX …
Read the whole file at its exact version.
How to install
mdr add jrodrigopuca/local-agents/lh-fullstack-boundaries@sha256:5212654ffc9b2f0bThe line at the top of this page pins the label v1.1, 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_i5imlwnpms3wyc3d)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 14, 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 (4048 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
jrodrigopuca/local-agents · 2 stars · license Apache-2.0 · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i5imlwnpms3wyc3d GET https://markdownregistry.com/api/v1/resolve?ref=jrodrigopuca/local-agents/lh-fullstack-boundaries GET https://markdownregistry.com/api/v1/blob/5212654ffc9b2f0b30eb01cd258433a384c8b3fa97d8f9ff31adfa8ea10615df
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.