spec-to-plan

spec-to-plan is a skill for Claude Code, Codex from agentculture/fleet-cli. It costs 181 tokens per session (2,804 once invoked), scanned A, a copy of spec-to-plan, Apache-2.0.

A method for turning a finished feature specification into a buildable plan. It creates tasks that cover the specification's confirmed claims and conditions for judging whether they are true.

In plain words
What is it for?
It helps seed a plan from a completed specification, add implementation tasks, define acceptance criteria, and inspect plan progress through the devague command.
Why use it?
It prevents implementation plans from missing parts of an agreed specification. The plan tracks what still needs tasks or acceptance criteria.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/agentculture/fleet-cli/spec-to-plan
Any agent
npx skills add agentculture/fleet-cli --skill spec-to-plan
Clone the repo
git clone --depth 1 https://github.com/agentculture/fleet-cli

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for spec-to-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/agentculture/fleet-cli/spec-to-plan.svg)](https://agentmods.dev/skills/agentculture/fleet-cli/spec-to-plan)
Your own site
<a href="https://agentmods.dev/skills/agentculture/fleet-cli/spec-to-plan"><img src="https://agentmods.dev/badge/skills/agentculture/fleet-cli/spec-to-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 181 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,804 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00181 $0.02804
Opus 5 $0.00090 $0.01402
Sonnet 5 $0.00036 $0.00561
Haiku 4.5 $0.00018 $0.00280

Measured 4d ago against content hash 237fa08bdcdc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

spec-to-plan scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/spec-to-plan.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to spec-to-plan — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/spec-to-plan/SKILL.md · 231 lines

How it starts

The opening of the file, as written. The whole thing — 231 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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); --origin llm lands it proposed.
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.
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.
export Write the buildable plan to docs/plans/ — only after converge passes.
waves Emit deterministic dependency waves ({plan, waves}) — scheduling metadata only, not 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).
status Read-only: where the plan stands + the recommended next move, re-checked against the live frame (--json too).
show / list Render a plan / list plans (--json for raw state).
learn / explain <move> Teach the method / explain one move.

Read the full file on GitHub · 231 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 231 lines · 181 tokens per session scan A 237fa08bdcdc

Subscribe to this mod's changes

spec-to-plan is a skill published in the GitHub repository agentculture/fleet-cli (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 181 tokens to every session and 2,804 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to spec-to-plan, differing in 0 lines, and is treated as a copy.

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