Why SDD Breaks Down in Microservices: Part 2. Why I Built Archspec to Keep Service Context Explicit
From Programming Tech Brief By HackerNoon by HackerNoon
May 28, 2026 · 15 min
About this episode
The episode discusses the limitations of spec-driven development in microservices and introduces archspec, a tool designed to maintain explicit service context.
This story was originally published on HackerNoon at: https://hackernoon.com/why-sdd-breaks-down-in-microservices-part-2-why-i-built-archspec-to-keep-service-context-explicit . I built archspec, an open source Claude Code plugin that turns microservice architecture rules into YAML contracts, docs, diagrams, and commit checks. Check more stories related to programming at: https://hackernoon.com/c/programming . You can also check exclusive content about #software-architecture , #microservices , #spec-driven-development , #claude-code , #ai-coding , #developer-tools , #system-design , #open-source , and more. This story was written by: @krus210 . Learn more about this writer by checking @krus210's about page, and for more stories, please visit hackernoon.com . Part 1 showed how LLM-generated specs lose the rules between microservices. Part 2 introduces archspec, an open source Claude Code plugin that initializes a YAML service contract, generated architecture docs, Mermaid diagrams, and pre-commit checks so idempotency, Outbox, consumers, and service links stay explicit.
Topics covered
- microservices
- software architecture
- spec-driven development
- open source
- developer tools
Keywords
- microservice architecture
- YAML contracts
- architecture docs
- Mermaid diagrams
- commit checks
Mentioned in this episode
Organizations: HackerNoon
Products: archspec, Claude Code
Books & works: Why SDD Breaks Down in Microservices: Part 2. Why I Built Archspec to Keep Service Context Explicit
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