Product Capability
This turns product asks into implementation-ready capability plans before multi-service work starts. You give it a PRD, roadmap item, or founder note, and it extracts the constraints, invariants, interfaces, and open questions that usually live only in senior engineer memory. The output is an SRS-style contract with actors, states, data implications, and explicit non-goals. Use it when product intent is clear but the architecture and policy implications are still fuzzy, or when a feature crosses repos and you need a durable artifact before code review. It won't invent product truth. It will tell you what's fixed, what's preference, and what still needs clarification.
- skills.sh installs
- 5.5K
- GitHub stars
- 300.3K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add affaan-m/ecc --skill product-capability --agent claude-codeInstalls into .claude/skills of the current project.
Files
Product Capability
This skill turns product intent into explicit engineering constraints.
Use it when the gap is not "what should we build?" but "what exactly must be true before implementation starts?"
When to Use
- A PRD, roadmap item, discussion, or founder note exists, but the implementation constraints are still implicit
- A feature crosses multiple services, repos, or teams and needs a capability contract before coding
- Product intent is clear, but architecture, data, lifecycle, or policy implications are still fuzzy
- Senior engineers keep restating the same hidden assumptions during review
- You need a reusable artifact that can survive across harnesses and sessions
Canonical Artifact
If the repo has a durable product-context file such as PRODUCT.md, docs/product/, or a program-spec directory, update it there.
If no capability manifest exists yet, create one using the template at:
docs/examples/product-capability-template.md
The goal is not to create another planning stack. The goal is to make hidden capability constraints durable and reusable.
Non-Negotiable Rules
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- Repository
- github.com/affaan-m/ecc
- Category
- Productivity & Planning
- First seen
- Jul 14, 2026
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