gof-interpreter SKILL.md skillA

gof-interpreter from robsonkades/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add robsonkades/agent-skills/gof-interpreter@git:20260927.9ecadfd

Pins git:20260927.9ecadfd in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
robsonkades/agent-skills
Path
skills/gof-interpreter/SKILL.md
Versions recorded
5
Latest version
git:20260927.9ecadfd, committed Sep 27, 2026
First version recorded
Sep 3, 2026
Size
12,016 bytes
Repository stars
3
License
Apache-2.0

Interpreter in modern Java: representing a small language as a typed tree and evaluating it, using per-node interpretation or a sealed AST with an exhaustive switch according to the extension contract. Covers parsing as a separate problem the pattern does not solve, when an existing expression language beats writing one, how general expression engines become code-execution surfaces when exposed with unsafe capabilities, the resource bounds an interpreter over untrusted input needs, and closure…

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

# Interpreter

## Purpose

Give a small language a typed representation and an evaluator. The pattern is worth its cost when
users — or configuration, or another service — must express conditions the code cannot enumerate:
filter expressions, pricing formulas, routing rules, feature-flag conditions, alert predicates.

Two boundaries help scope it. Parsing is a separate responsibility even though a usable language
normally needs it. And the GoF class-per-production approach fits small grammars best; scoping,
user functions, recursion, optimization or strict isolation may justify a mature runtime, bytecode
VM, or existing language rather than an ever-growing `switch`.

Start with actual consumer expressions, existing configuration/query APIs and accepted language
semantics. Identify who authors rules, which inputs and capabilities they may use, and whether
rules must also be explained, stored or translated. Resolve material type/error/authorization gaps
before prescribing a language; retain an adequate existing mechanism when no new grammar is needed.

The sealed AST plus pattern-switch examples require Java 21 or later without preview features.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add robsonkades/agent-skills/gof-interpreter@sha256:abf310c02e18f704

The line at the top of this page pins the label git:20260927.9ecadfd, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_y4pkwonf6kucnsgu.svg)](https://markdownregistry.com/a/art_y4pkwonf6kucnsgu)

0 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Sep 3, 2026 and Sep 27, 2026, about one every 6 days.

versioncommittedcommitsizeaudit
git:20260927.9ecadfd latest2026-09-27 9ecadfd 12,016 BA view · diff
git:20260923.832673e2026-09-23 832673e 11,519 BA view · diff
git:20260911.37b054b2026-09-11 37b054b 11,311 BA view · diff
git:20260906.e6ad4bd2026-09-06 e6ad4bd 10,303 BA view · diff
git:20260903.f1995302026-09-03 f199530 9,508 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12016 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

GitHub

robsonkades/agent-skills · 3 stars · license Apache-2.0 · pushed 2026-10-28 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_y4pkwonf6kucnsgu
GET https://markdownregistry.com/api/v1/resolve?ref=robsonkades/agent-skills/gof-interpreter
GET https://markdownregistry.com/api/v1/blob/abf310c02e18f70440dfb2aa29552b43bfff5bf589d5002f060c9e6e8f16a9a9

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.

More from robsonkades/agent-skills

AGENTS.md AGENTS.md file
robsonkades/agent-skills · AGENTS.md
git:20260911.37b054b · audit A · 3 stars
CLAUDE.md CLAUDE.md file
robsonkades/agent-skills · CLAUDE.md
git:20260828.eebb38a · audit A · 3 stars
DESIGN.md DESIGN.md file
robsonkades/agent-skills · DESIGN.md
git:20261001.2e77f4f · audit A · 3 stars
adapter-sidecar-pattern SKILL.md skill
robsonkades/agent-skills · skills/adapter-sidecar-pattern/SKILL.md · Choose and review Kubernetes telemetry adapters when a legacy or vendor process emits incompatible metrics, logs or…
git:20261016.c769bd8 · audit A · 3 stars
allocation-profiling SKILL.md skill
robsonkades/agent-skills · skills/allocation-profiling/SKILL.md · Attribute Java heap allocation to code and validate reductions in bytes per operation. Use when allocation or GC…
git:20261016.c769bd8 · audit A · 3 stars
ambassador-pattern SKILL.md skill
robsonkades/agent-skills · skills/ambassador-pattern/SKILL.md · Choose or review a local outbound proxy when discovery or routing changes require client releases, a canary or shadow…
git:20261016.c769bd8 · audit A · 3 stars
api-gateway-and-bff SKILL.md skill
robsonkades/agent-skills · skills/api-gateway-and-bff/SKILL.md · Design or review an API gateway or backend for frontend when client journeys need different representations, too many…
git:20261016.c769bd8 · audit A · 3 stars
architecture-and-performance SKILL.md skill
robsonkades/agent-skills · skills/architecture-and-performance/SKILL.md · Attribute endpoint latency and throughput limits to architectural choices when query counts grow with result size…
git:20260927.9ecadfd · audit A · 3 stars
architecture-characteristics SKILL.md skill
robsonkades/agent-skills · skills/architecture-characteristics/SKILL.md · Derive and prioritize architectural quality drivers when requirements say only scalable or reliable, too many qualities…
git:20260927.9ecadfd · audit A · 3 stars
architecture-coupling-and-quanta SKILL.md skill
robsonkades/agent-skills · skills/architecture-coupling-and-quanta/SKILL.md · Map release and runtime coupling when services ship together, event-driven components still require coordinated…
git:20260927.9ecadfd · audit A · 3 stars
architecture-decision-making SKILL.md skill
robsonkades/agent-skills · skills/architecture-decision-making/SKILL.md · Write, review, reconstruct or supersede architecture decision records when rationale is missing, a decision is…
git:20260927.9ecadfd · audit A · 3 stars
architecture-fitness-functions SKILL.md skill
robsonkades/agent-skills · skills/architecture-fitness-functions/SKILL.md · Define or review checks that preserve architectural qualities when a green pipeline misses incidents, inherited rules…
git:20260927.9ecadfd · audit A · 3 stars

Every file in robsonkades/agent-skills

Browse by kind, by grade A, or by owner.