spec-writer

Installation
SKILL.md

Spec Writer

Bundled runtime

Before executing a CLI line below, replace its leading SSF with node "<plugin-root>/scripts/spec-superflow.mjs"; <plugin-root> is the absolute directory two levels above this file. Never run SSF literally or call an ssf from PATH.

Workflow routing

A new request follows this file without loading legacy instructions. For an existing change, inspect the recorded state and receipt/plan (available through SSF workflow show <change-dir> --json and SSF execution show <dir> --json when needed). Current paths are workflow_variant: direct with a valid workflow-selection receipt schema_version: 3, or workflow_variant: planned with an execution plan schema_version: 2. Older receipts (schema 1/2), legacy plans and other recorded variants use the matching section of SSF runtime asset read docs/legacy-workflow.md; follow that section for this change. A direct variant alone is insufficient: legacy Quick/Hotfix/Lightweight can also record it. The internal workflow: full value alone is not a legacy signal. Missing or corrupt state, receipt or a required plan is a recovery problem; preserve evidence rather than reinitialize or downgrade the change.

Create or refine planning artifacts when the change has moved beyond exploration.

New planned changes

For a new request, an expanding direct change, or workflow_variant planned, write proposal.md and tasks.md together without pausing between individual artifacts. Proposal holds the goal, in/out scope, acceptance and risks; tasks holds ordered deliverables and proof commands. Add specs only for behavior needing durable scenarios and design only for unresolved architectural decisions. Do not create execution-contract.md or duplicate the task list in another plan.

Check shared interfaces against the real source once, then self-check the problem, scope, dependencies and proof. Present one approval request only if this concrete plan lacks approval. After approval run SSF workflow start <dir> --path planned --confirm --reason "<user decision>" and continue implementation. No intermediate planning/bridging transitions or independent reader agent. A semantic revision uses the same command after approval; a nonsemantic correction uses execution resync and retains failed-review history.

Artifact checks

Installs
59
GitHub Stars
876
First Seen
Jul 1, 2026