Phase D Batch 03 — OpenSpec Ecosystem (Schemas, Gates, Niche Adapters)

Roster (10)

slug	stars	distribution	cli_binary	local_ui	orchestration	multi_model	tier
openspec-schemas-intent	43	standalone-repo	no	none	sequential	no	A
openspec-schemas-kmhalvin	1	standalone-repo	no	none	hierarchical	no	A
openspec-spec-driven-superpowers	14	standalone-repo	no	none	sequential/optional-hierarchical	no	A
openspec-playwright	4	npm-package	openspec-pw (9 subcmds)	none	sequential	no	A
openspec-sh	3	bash-script-bundle	openspec (4 subcmds)	none	none	no	A
novel-writer-openspec	29	npm-package	novelspec (5 subcmds)	none	sequential	no	A
openspec-video	2	npm-package	opsv (11 subcmds)	web-dashboard port 3100	task-decomp-tree	yes	A
omnidev-kit	1	skill-pack	no	none	sequential	no	A
sourcebook	3	npm-package	sourcebook (14 subcmds)	none	none	yes (L-A det + L-B LLM)	A
vibe-compiler	0	unknown	unknown	unknown	unknown	unknown	C

Intra-batch Patterns

All nine successfully-analyzed frameworks extend, port, or complement OpenSpec — confirming the batch theme. There are two clear sub-clusters: (1) schema extensions (openspec-schemas-intent, openspec-schemas-kmhalvin, openspec-spec-driven-superpowers) that add domain-specific artifact graphs to the OpenSpec CLI without modifying its command surface, and (2) domain ports and adapters (openspec-playwright, openspec-sh, novel-writer-openspec, openspec-video) that apply the spec-as-code philosophy outside software development — to E2E testing, POSIX environments, fiction writing, and AI media production. Omnidev-kit and sourcebook are orthogonal: omnidev-kit synthesizes multiple seed frameworks (explicitly naming superpowers + OpenSpec + planning-with-files) into a unified slash-command skill, while sourcebook works upstream of all spec frameworks by generating accurate AI context from git analysis. The most technically ambitious pattern is kmhalvin's Context Drop technique (mandatory session restarts between planning phases) — the only framework in the corpus that treats LLM context accumulation as a first-class failure mode to be solved architecturally.

Most Interesting Finds

openspec-video (OpsV): The most architecturally distinctive framework in the batch. Applies spec-driven development to AI cinematic production with circle-based dependency layering (topological sort), physical state machine (file existence = state), and explicit multi-provider model routing — none of which appear in any seed. The AI is the asset generator (producing images/videos), not the operator — an inversion of the human/AI relationship in all other frameworks.
openspec-schemas-kmhalvin (QRSPI): The mandatory Context Drop technique — forced full session restarts between planning phases — is the most counter-intuitive but principled approach to context budget management in the entire corpus. It treats LLM "instruction budget exhaustion" as the root cause of hallucination in complex brownfield tasks and solves it by architecture rather than prompting.

Items Written as Tier C

slug	reason
vibe-compiler	GitHub URL https://github.com/vibec/vibec returns HTTP 404. Repository not found. Multiple alternative URL patterns attempted.

Cross-References Discovered

openspec-spec-driven-superpowers explicitly extends both openspec (control plane) and superpowers (execution discipline) — the most direct cross-seed integration found in the corpus.
omnidev-kit explicitly claims to synthesize obra/superpowers, OpenSpec, planning-with-files, and everything-claude-code — unique self-documentation of multi-seed synthesis.
novel-writer-openspec by wordflowlab has a companion project novel-writer based on Spec-Kit — the same author compared both frameworks and chose OpenSpec's delta format for the novel use case.
openspec-schemas-kmhalvin credits HumanLayer's "Dex" talk "Everything We Got Wrong About RPI" for the QRSPI methodology.
openspec-video credits "antigravity" framework in its description.
openspec-sh and openspec share identical directory conventions (openspec/specs/, openspec/changes/, proposal.md, tasks.md) — OpenSpec.sh is a direct POSIX reimplementation.