spec-to-plan

name	spec-to-plan
description	Turn a converged devague spec into a buildable plan by working forwards (the spec→plan leg; drives the `devague plan` CLI group). Seed a plan from a converged frame, add tasks that collectively cover every coverage target (the frame's confirmed claims + honesty conditions), give each task acceptance criteria and an honest dependency order, park genuine unknowns as first-class risks, and export a plan only once it *converges*. Use when the user says "spec to plan", "stp", "turn this spec into a plan", "plan this spec", "make a build plan", or after the /think skill exports a spec. Authored and maintained in agentculture/devague (origin = devague); guildmaster pulls this skill from here and broadcasts it to the AgentCulture mesh — it is NOT vendored from guildmaster like the inbound skills here.
type	command

spec-to-plan — work a converged spec forwards into a buildable plan

The skill is named spec-to-plan; the product/CLI it drives is the devague plan command group. (The prior leg — turning a vague idea into a spec — is the sibling /think skill.) It is the forward peer of the working-backwards spec engine: where /think converges on what to build, /spec-to-plan converges on how to build it.

A plan is seeded from a converged frame and tracks tasks against the spec's coverage targets. The CLI is deterministic and move-driven — you (the agent) choose the next move; the CLI tracks state and tells you what's still missing. Run devague plan learn for the method and devague plan explain <move> for any single move.

How to run

The entry point is scripts/spec-to-plan.sh. Invoke it from the repository you are speccing (plans persist under .devague/ in the current directory, alongside the frames they derive from):

bash .claude/skills/spec-to-plan/scripts/spec-to-plan.sh <move> [args...]
bash .claude/skills/spec-to-plan/scripts/spec-to-plan.sh status

It resolves the CLI portably — an installed devague on PATH (the normal case), falling back to uv run devague inside the devague checkout, else an install hint. Every move — including status — is forwarded verbatim as devague plan <move>, so you can equally call the CLI directly (devague plan <move> …).

Moves

Move	What it does
new --frame <slug>	Seed a plan from a converged frame. Derives the coverage targets (c*/h*) the plan must satisfy. Refuses an unconverged frame.
task "<summary>"	Add a task. --accept "<crit>", --dep <tN>, --covers <c*/h*> (each repeatable), --instruction "<text>" (verbatim working guidance, at creation); --origin llm lands it proposed.
instruct <tN> "<text>"	Add/update a task's working instruction. Changing it on an already-confirmed task flips it back to proposed — the user re-confirms (the plan side's mirror of the frame side's interrogate --instruction re-confirm rule).
accept <tN> "<crit>"	Add an acceptance criterion to a task.
depend <tN> --on <tM>	Record that task tN depends on tM.
cover <tN> --target <c*/h*>	Mark a task as covering a coverage target.
confirm <tN> / reject <tN>	Resolve a task. User-only decision. Takes one task id per call — loop for batches (unlike the frame engine's transactional multi-id confirm; parity is a recorded follow-up in the 2026-07-01 plan, devague#53).
risk "<text>" --kind <kind>	Record a first-class plan risk (--task <tN> to attach).
converge	Evaluate the gate against the live source frame; list remaining gaps, plus non-blocking warnings (e.g. a confirmed task with no instruction).
export	Write the buildable plan to docs/plans/ — only after converge passes.
waves	Emit deterministic dependency waves — {plan, waves} plus a top-level object keyed by task id (per-task summary/instruction/acceptance criteria/covers — see below) — scheduling + subagent-brief metadata only, orchestration. Read-only, works on an in-progress plan; refuses a cyclic/dangling graph. Devague describes the graph; an operator decides how to run it (#20).

Risk kinds (shared with the frame engine): unknown_nonblocking, unknown_blocking, out_of_scope, follow_up.

status — the next-move verb

status is a first-class, read-only CLI verb (devague plan status, internalised from this wrapper in 0.11.0 — issue #30). It composes devague plan list + devague plan converge and prints where the current plan stands, the remaining gaps, and the recommended next move derived from the first gap. Like converge/export it re-checks the live source frame (so frame drift surfaces as an error), but it never mutates state. Pass --json for the structured payload ({plan, total, ready_for_plan, blockers, warnings, parked_items, required_next_moves}).

plan: my-feature    (1 plan total)
convergence: NOT passed — 2 gap(s):
  - coverage target c5 (boundary) has no confirmed task
  - task t2 has no acceptance criteria

recommended next move (first gap):
  cover c5: devague plan task "<summary>" --covers c5 --accept "<...>"

Run it whenever you're unsure what to do next.

Hard rules (do not violate)

These are the point of the method — convergence must mean something.

• Seed from a converged spec only. plan new refuses a frame that hasn't converged. The plan's coverage targets are the spec's confirmed claims and honesty conditions — there is nothing honest to plan against until the spec converges.
• LLM proposals stay proposed. A task captured with --origin llm lands as proposed. Never confirm your own proposal. Confirmation is a user-only decision — surface the proposed task and let the user confirm or reject it.
• Cover every target; criteria on every task. The gate requires every coverage target to be covered by a confirmed task, and every confirmed task to carry at least one acceptance criterion. Don't hand-wave a task as "done-ish."
• Keep the graph honest. Dependencies must reference real tasks and form an acyclic graph; the gate rejects dangling deps and cycles.
• Park real unknowns as risks; don't paper over them. A genuinely unknown decision is an unknown_blocking risk — it holds back convergence, by design.
• Converge against the live frame. converge/export re-load the source frame every time. If the frame was deleted or has regressed below convergence, they refuse — re-converge the spec (in /think) first.

Coaching toward small, file-disjoint, TDD-gated tasks

When authoring a plan that will be built via parallel execution (fanned out to multiple agents via the downstream /assign-to-workforce skill), prefer the following discipline to maximize parallelism and minimize merge friction:

Acceptance criteria are the testable contract; instruction is the working guidance

Two fields now do two distinct jobs on every task (shipped: devague#53 t5):

• --accept "<criterion>" (repeatable) — the testable contract: what a test suite checks to prove the task done. Write each as something a cheaper model can be validated against test-first: name the files or modules the task owns, the observable behavior that proves it done, and the compatibility constraints ("pre-existing plans load with no error"). A criterion a subagent can't be validated against alone is a summary, not a contract.
• --instruction "<text>" (at task time) / instruct <tN> "<text>" (afterwards) — verbatim working guidance carried to the subagent: the approach to take, which files to touch first, anything the acceptance criteria don't spell out. Write it yourself; never invent filler to satisfy the gate. Changing it on an already-confirmed task flips the task back to proposed — the user re-confirms.

devague plan converge warns (non-blocking) when a confirmed task carries no instruction:

task t1 has no instruction — attach operator guidance with `devague plan instruct t1 "<text>"`

Neither field replaces the other: acceptance criteria stay the pass/fail gate; instruction is what a subagent reads before it starts, quoted verbatim (never paraphrased) into the brief — see The waves --json payload below.

Text hygiene for exports

The exported plan-md must pass markdown lint. The plan's H1 inherits the frame's title — set a short, period-free --title at devague new time (see /think's export-hygiene rules). And backtick angle-bracket placeholders in task text (`instruct <tN>`, not instruct <tN>) — bare ones fail MD033. There is no task-edit move yet, so fixing text after confirmation means hand-editing state JSON.

Small and crisply scoped

Each task should be small enough for a simpler or cheaper model to build test-first without re-deriving the full design. If a task spans multiple files or architectural layers, split it — narrow scope forces you to write sharp acceptance criteria and keeps waves wide.

File disjoint

Prefer tasks that touch non-overlapping files. When two same-wave tasks modify the same file, merge collision becomes inevitable. The dependency graph alone does not guarantee file disjointness — it only sequences task content dependencies; same-wave tasks with overlapping file-writes must be split across waves or given explicit dependencies.

Check devague plan waves output: if a wave is wide but all tasks touch src/core.py, the wave is formally parallel but operationally serialized at merge. Reorder task boundaries so wide waves operate on disjoint file sets.

TDD acceptance criteria on every task

Every confirmed task must carry at least one acceptance criterion, phrased as a testable condition (not a vague outcome). For example:

• Bad: "Implement the parser"
• Better: "Parser accepts a valid spec file and rejects malformed YAML without data loss"

Acceptance criteria are the contract between the main agent (who merges) and the subagent (who builds). A test suite derived from these criteria validates each task's output before merge, independent of model capability. This is not optional: devague plan converge warns (non-blocking) when a confirmed task lacks criteria.

The key invariant: parallel = serial

A plan built in parallel must yield identical results to building it serially. This is guaranteed only if:

1. Same-wave tasks have no inter-task dependencies (checked by waves).
2. Same-wave tasks touch disjoint files (you must verify; the CLI does not).
3. Each task's acceptance criteria are sharp enough that a subagent's output passes them independent of whether it was built in isolation or alongside other tasks.

The TDD gate — tests pass before and after the merge — is the main agent's proof that parallelism didn't break correctness.

The waves --json payload — the subagent brief

devague plan waves --json keeps its original shape — {"plan": "<slug>", "waves": [[...], ...]}, the ordered task-id scheduling batches — and adds a top-level "tasks" object, keyed by task id, carrying each task's brief verbatim (devague#53 t9, shipping in this same increment):

{
  "plan": "<slug>",
  "waves": [["t1"], ["t2", "t3"]],
  "tasks": {
    "t1": {
      "summary": "<task summary>",
      "instruction": "<verbatim instruction, or \"\" if none>",
      "acceptance_criteria": ["<criterion>", "..."],
      "covers": ["<c*/h* id>", "..."]
    }
  }
}

This is enough to build a per-subagent brief with no external context — no need to also fetch plan show --json or the exported plan-md. Quote instruction and acceptance_criteria verbatim into the brief; don't paraphrase them.

How to route tasks to the workforce

Once your plan converges, devague plan waves emits the dependency-graph plus the per-task brief above as scheduling metadata (ordered batches of task IDs, each with its summary/instruction/acceptance criteria/covers). This feeds directly into the /assign-to-workforce skill, which:

1. Displays the plan, waves, and suggested per-task subagent/model pairing.
2. Waits for the human to approve the implementation split plan (or edit assignments).
3. Fans out approved waves to isolated subagent worktrees (one per task per wave) — each subagent's brief quotes its task's instruction and acceptance_criteria verbatim from the payload above.
4. Returns control to the main agent, which TDD-gates each merge before moving to the next wave.

Plan for workforce execution early: narrow task scope, write crisp acceptance criteria, attach a working instruction, and strive for wide waves with disjoint files.

Output contract

Results go to stdout, diagnostics and errors to stderr — a strict split you can rely on when parsing. Pass --json to any move for a structured payload. Exit code 0 on success, non-zero on user error (with a hint: line). Plans live under .devague/plans/ in the current directory; the exported plan-md lands in docs/plans/.

Worked example

Picking up after /think exported a spec for the frame my-feature:

p() { bash .claude/skills/spec-to-plan/scripts/spec-to-plan.sh "$@"; }

p new --frame my-feature        # seeds the plan + its coverage targets
p show                          # see the c*/h* targets you must cover

p task "Build the core engine" --accept "engine has a convergence gate" \
    --covers c1 --covers c3 --instruction "implement in devague/frame.py; see docs/spec-contract.md for the schema"
p task "Pressure-test honesty conditions" --dep t1 --covers h1 --covers h2 \
    --accept "every honesty condition maps to a test"

# Add/refine an instruction after the fact — changing it on a confirmed task
# flips the task back to 'proposed' (the user re-confirms):
p instruct t2 "write tests/test_honesty.py covering each honesty condition"

# Park a genuine unknown instead of guessing:
p risk "exact rollout sequencing" --kind unknown_nonblocking

p status        # what's left + the next move
p converge      # gate; resolve any listed gaps (warnings never block export)
p export        # writes docs/plans/my-feature.md once converged
p waves --json  # scheduling metadata + the per-task subagent brief

The exported plan-md is a buildable artifact: topologically ordered tasks, each with acceptance criteria and the spec targets it covers. It feeds directly into implementation (or superpowers:writing-plans).

Provenance

This is a first-party skill — its origin is agentculture/devague, where the devague agent maintains it alongside the tool it operates (dogfooding), next to its sibling /think. It is the inverse of the other skills under .claude/skills/, which devague vendors from guildmaster. guildmaster pulls it from devague and broadcasts it to the rest of the AgentCulture mesh. The cite, don't import policy still holds: downstream repos copy it, they don't symlink or depend on it. See docs/skill-sources.md.