spec-bootstrap-backend

Generate backend service specifications from legacy source code analysis.

Updated May 27, 2026
One-click install
npx skills add https://github.com/santanapol/agent-skills --skill spec-bootstrap-backend
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: spec-bootstrap-backend
Source: https://github.com/santanapol/agent-skills/tree/main/.cursor/skills/spec-bootstrap-backend
Command: npx skills add https://github.com/santanapol/agent-skills --skill spec-bootstrap-backend

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Manually creating accurate backend service specifications from existing legacy codebases is time-consuming, error-prone, and often fails to capture actual implemented behavior or critical domain context, leading to misalignment between documentation and production systems.

Core Features & Use Cases

  • Full Source Code Behavioral Analysis: Scans all source files, tests, and API definitions end-to-end to generate a detailed walkthrough of the existing system's actual behavior, eliminating reliance on outdated or incorrect legacy specs.
  • Validated 10-Step Spec Pipeline: Follows a structured workflow from service discovery and tier classification to domain knowledge capture, gap analysis, and CI-verified spec hardening, with mandatory user confirmation at key checkpoints to ensure accuracy.
  • Use Case: For teams that have inherited a legacy user authentication backend service with no up-to-date documentation, this skill will produce a complete, implementation-ready spec aligned with your team's coding standards, with confidence ratings for each section to highlight areas that need further validation.

Quick Start

Invoke the spec-bootstrap-backend skill with the root path to your legacy backend service package to start the end-to-end spec generation workflow.

Frequently Asked Questions about spec-bootstrap-backend

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate backend service specifications from undocumented legacy code?

To generate backend specs from legacy code, this skill scans all source files, tests, and API definitions end-to-end to produce a detailed behavioral walkthrough without relying on outdated documentation.

What is the best way to reverse engineer legacy backend code into domain models?

The best way to reverse engineer legacy code into domain models is using a structured pipeline that captures domain knowledge through guided user confirmation and gap analysis to align with actual implementation behavior.

How do I ensure generated backend specs match the actual implemented behavior of a legacy system?

To ensure generated specs match actual behavior, the workflow applies a CI-verified spec hardening process with confidence-mapped gap analysis, requiring mandatory user confirmation at key checkpoints to validate accuracy.

Can I bootstrap production-ready backend documentation for an inherited service with no existing specs?

Yes, you can bootstrap production-ready backend specs for inherited undocumented services by invoking the skill with the root package path to start the end-to-end spec generation and tier classification workflow.

Does the spec generation process highlight uncertain or missing areas in the legacy code analysis?

Yes, the spec generation process highlights uncertain areas by assigning confidence ratings to each specification section, identifying specific gaps that require further validation against internal coding and domain standards.

When should I avoid using automated spec generation for legacy backend systems?

You should avoid automated spec generation when source files are inaccessible or when the legacy codebase cannot be scanned end-to-end, as the validated pipeline relies on full source code behavioral analysis to ensure accuracy.