Spec-driven workflow: prior art and alternatives

Status: Reference — captures why jackin❯ did not adopt an external spec-driven tool wholesale, and what was mined from each candidate. See Agent workflow: jackin❯-native spec-driven workflow for the current state and remaining decisions.

Problem

jackin❯ needed a repo-committed, docs-first, cross-agent spec workflow. The earlier approach leaned on obra/superpowers and external skill-driven spec conventions — version-controlled when used, but outside the Fumadocs site and tied to one plugin stack (Claude-only command surface). The goal was a spec artifact that is first-class, browsable in the docs site, and drivable by every agent runtime jackin❯ supports, not just Claude.

Decision

jackin❯ did not adopt an external tool wholesale. Instead the roadmap item .mdx file itself is the living change-spec: while a change is open it carries ## Problem / ## Why It Matters / ## Design / ## Tasks sections; on ship it retires into canonical docs, so docs are the archive. No parallel openspec/ directory and no separate internal/specs/ tree exist in the repo. Repo-local helper tooling supports the human side of this: the jackin-dev helper (crates/jackin-dev/src/main.rs) drives PR sync/status/env/path/explain workflows. Agent skills can orchestrate the workflow, but durable project rules live in repo docs and PR guidance rather than in an external tool-specific spec directory.

Prior art mined (not adopted wholesale)

• obra/superpowers — brainstorming → spec authoring, writing-plans, TDD/debug/review skills. The brainstorming method informed the skill flow that shaped this convention; no superpowers spec tree exists in the current repo.
• OpenSpec — artifact roles (proposal / design / tasks) plus a propose→archive lifecycle discipline. The roles mapped cleanly onto roadmap-item sections (## Problem/## Design/## Tasks), but jackin❯ did not install OpenSpec's openspec/ directory or its JS CLI — that would duplicate the roadmap + docs site rather than reuse it.
• gotalab/cc-sdd — /spec /plan /execute command shape for Claude Code. A candidate wrapper, not adopted; a .claude/commands/ surface would only ever be one client of the canonical docs-backed spec, and jackin❯ wants every supported agent runtime (not just Claude) to be able to drive the workflow.

Open design questions

• Whether jackin❯ eventually grows its own spec-driven tool (cc-sdd/OpenSpec-like), or keeps the current skills + roadmap-item model indefinitely.
• Whether a plan skill should exist to mechanically break a roadmap item's ## Design section into ## Tasks.
• How to retire obra/superpowers-style external dependencies and migrate any high-value external specs into roadmap or reference pages once the in-repo replacement covers day-to-day needs.