sm-update-spec

sm-update-spec is a skill for Claude Code, Codex from elvezjp/ixv-agents. It costs 117 tokens per session (2,553 once invoked), scanned A, original, MIT.

A workflow tool for updating a project’s purpose document or README according to its current phase. It uses task information to decide which sections to change.

In plain words
What is it for?
Updating CONSTITUTION.md or README.md during project planning and tracking completed backlog work.
Why use it?
It keeps the project’s purpose, requirements, acceptance criteria, detailed specifications, and backlog status in the right documents.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Updating CONSTITUTION.md or README.md during project planning and tracking completed backlog work.

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Install with agentmods
npx agentmods add skills/elvezjp/ixv-agents/sm-update-spec
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.

Any agent
npx skills add elvezjp/ixv-agents --skill sm-update-spec
Clone the repo
git clone --depth 1 https://github.com/elvezjp/ixv-agents

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 sm-update-spec

README.md
[![agentmods](https://agentmods.dev/badge/skills/elvezjp/ixv-agents/sm-update-spec/github.svg)](https://agentmods.dev/skills/elvezjp/ixv-agents/sm-update-spec)
Your own site
<a href="https://agentmods.dev/skills/elvezjp/ixv-agents/sm-update-spec"><img src="https://agentmods.dev/badge/skills/elvezjp/ixv-agents/sm-update-spec/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sm-update-spec

Your own site · 80×15
<a href="https://agentmods.dev/skills/elvezjp/ixv-agents/sm-update-spec"><img src="https://agentmods.dev/badge/skills/elvezjp/ixv-agents/sm-update-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,553 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 5.1 $0.00117 $0.02553
Opus 5 $0.00059 $0.01277
Sonnet 5 $0.00023 $0.00511
Haiku 4.5 $0.00012 $0.00255

Measured 9d ago against content hash fd8c2bf86589, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

sm-update-spec 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 9d ago.

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.

skills/sm-update-spec/SKILL.md · 234 lines

How it starts

The opening of the file, as written. The whole thing — 234 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SM Update Spec

フェーズコンテキストに応じて、プロジェクトの仕様文書(CONSTITUTION.md / README.md)を更新する。

When to Use

  • Phase 1: POから constitution_update タスクを受領した時
  • Phase 2: POから spec_update タスクを受領した時
  • Phase 3: 計画に基づく仕様詳細化が必要な時
  • Phase 6: POから backlog_update タスクを受領した時

Instructions

Step 1: 現在のフェーズを確認

queue/po_to_sm.yamltask_type から現在のフェーズを確認する。

task_type Phase 更新対象
constitution_update 1 CONSTITUTION.md
spec_update 2 README.md
plan 3 README.md(詳細化)
backlog_update 6 README.md(Backlog)

Step 2: フェーズ別の更新対象を特定

Phase 1: CONSTITUTION.md 更新

更新対象セクション: ## 1. 存在意義(Purpose)

更新手順:

  1. CONSTITUTION.md を読み取り
  2. ## 1. 存在意義(Purpose) セクションを確認
  3. po_to_sm.yamlsummary / acceptance_criteria / notes に基づき内容を記入
  4. テンプレート文言(「このプロジェクトが存在する理由を明記する」)を具体的な目的に置換

未記入判定パターン(テンプレート文言のまま/空/プレースホルダー):

  • 「このプロジェクトが存在する理由を明記する」
  • 「TODO」「TBD」「要記入」
  • {purpose} / [目的を記入]
Phase 2: README.md 更新(仕様策定)

更新対象セクション:

セクション 更新内容
## Goal 目的/達成したい価値の追加・修正
## Scope 含める範囲/Non-Goalsの追加・修正
## Requirements 機能要件の追加
## Acceptance Criteria 受入条件(テスト観点)の追加
## Constraints 技術/運用/セキュリティ制約の追加
## Backlog 新規エントリ追加(Status: ready)

更新手順:

  1. README.md を読み取り
  2. po_to_sm.yamlsummary / acceptance_criteria / constraints / notes を確認
  3. 該当セクションに要件を追加
  4. Backlog テーブルに新規エントリを追加

Backlog エントリ追加例:

## Backlog
| ID | Priority | Summary | Status |
|----|----------|---------|--------|
| REQ-20260201-001 | P1 | ダークモード対応 | ready |
Phase 3: README.md 更新(仕様詳細化)

更新手順:

  1. docs/ の計画書を読み取り
  2. 計画内容に基づき、README.md の Requirements / Acceptance Criteria を具体化
  3. 必要に応じて Constraints を追加

注意: 計画書(docs/)は補助資料。仕様として有効なのは README.md の記載のみ。 計画書に重要な決定がある場合、README.md の該当セクションへ要点を反映する。

Phase 6: README.md 更新(Backlog ステータス更新)

前提: 本スキルは Phase 6 の ACCEPT 分岐(PO が backlog_update を発行した場合)で起動する。REJECT / REVIEW_NEEDED 分岐では起動しない(SPEC.md §5.6 参照)。

Read the full file on GitHub · 234 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. 9d ago First seen · 234 lines · 117 tokens per session scan A fd8c2bf86589

Subscribe to this mod's changes

sm-update-spec is a skill published in the GitHub repository elvezjp/ixv-agents (5 stars, last pushed 1mo ago), licensed MIT. It adds 117 tokens to every session and 2,553 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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