buy-vs-build
01Plugin Claude Code
Buy-vs-build ruleset for AI coding agents.
3 2mo ago A
tokens not measured
original MIT
buy-vs-build
02Plugin Claude Code
Buy-vs-build mode. Forces agents to check standard library, native platform, already-installed dependencies, open source, commercial options, then build in-house only when warranted.
3 2mo ago A
tokens not measured
original MIT
buy-vs-build
03Cursor rule Cursor
Before writing code, decide whether the work should be bought, reused, or built.
3 2mo ago A 580 tokens
original MIT
Instructions file GitHub Copilot
Instructions for stdin/buy-vs-build: Before writing code, decide whether the work should be bought, reused, or built.
3 2mo ago A 560 tokens
original MIT
buy-vs-build
05Skill Claude CodeCodex
Use when coding, designing implementations, choosing dependencies, or reviewing whether a task should use built-ins, platform features, installed packages, open source, commercial services, or in-house code.
3 2mo ago A 42 tokens
original MIT
Instructions file CodexOpenCode
Instructions for stdin/buy-vs-build: Before writing code, decide whether the work should be bought, reused, or built.
3 2mo ago A 560 tokens
copy · 100% MIT
Instructions file
Instructions for stdin/buy-vs-build: Before writing code, decide whether the work should be bought, reused, or built.
3 2mo ago A 560 tokens
copy · 100% MIT
Instructions file Gemini CLI
Instructions for stdin/buy-vs-build: Before writing code, decide whether the work should be bought, reused, or built.
3 2mo ago A 560 tokens
copy · 100% MIT
SessionStart
09Hook
Runs when a session starts on startup, resume, clear and compact, executing buy-vs-build-activate.js. From stdin/buy-vs-build.
3 2mo ago A
tokens not measured
original MIT
Skill Claude CodeCodex
Use when a non-obvious buy-vs-build decision was just made and should be recorded durably, or when a project keeps a docs/decisions/ log of Architecture Decision Records (ADRs) for build/buy/reuse and dependency choices.
3 2mo ago A 58 tokens
original MIT
Skill Claude CodeCodex
Use when auditing a repository or subsystem for avoidable in-house implementations, unnecessary dependencies, duplicated platform features, vendor lock-in, maintenance burden, or unclear buy-vs-build ownership decisions.
3 2mo ago A 44 tokens
original MIT
Skill Claude CodeCodex
Use when choosing between built-ins, standard libraries, native platform features, installed packages, open source libraries, commercial products, or in-house implementation for a feature or technical design.
3 2mo ago A 42 tokens
original MIT
Skill Claude CodeCodex
Use when evaluating whether to adopt a specific open-source or commercial dependency (npm/PyPI/etc. package or library) — to research its fit, maintenance and health, security and supply-chain risk, license, and footprint before taking it on.
3 2mo ago A 56 tokens
original MIT
Skill Claude CodeCodex
Use when summarizing Buy vs Build benchmark cases, behavior measurements, expected impact, release notes, or evidence that the ruleset reduces unnecessary code, dependencies, cost, or ownership risk.
3 2mo ago A 44 tokens
original MIT
Skill Claude CodeCodex
Use when reviewing a code diff, pull request, or local changes for buy-vs-build mistakes, avoidable custom code, unnecessary dependencies, missed built-ins, missed platform features, or weak decision notes.
3 2mo ago A 47 tokens
original MIT
Skill Claude CodeCodex
Use when choosing between options at the same ownership rung — a transport, API style, data store, job/async mechanism, integration pattern, or cache — and you want the one that fits the requirement's real shape (directionality, volume, latency, consistency, failure mode) rather than the most powerful, popular, or…
3 2mo ago A 75 tokens
original MIT