alego: Skill for Claude Code

.agents/skills/alego-create-upgrade-guide/SKILL.md

alego-create-upgrade-guide is a skill for Claude Code, Codex from singula-ai/alego. It costs 76 tokens per session (853 once invoked), scanned A, a copy of dsh-create-upgrade-guide, MIT.

A writing guide for documenting breaking changes in a software project. It explains what users must change when an upgrade alters commands, settings, saved data, APIs, or published package entry points.

In plain words
What is it for?
Use it to create or update versioned upgrade guides for command-line tools, configuration files, stored data, SDKs, network messages, and package entry points.
Why use it?
It prevents upgrade surprises by recording required user actions when an externally visible change is introduced. Teams can write the guidance while the change is still understood instead of reconstructing it during release preparation.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is singula-ai/alego's own configuration. It tells Claude Code and Codex how to work on alego itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything alego configures →

Reuse

Borrowing it

Nothing to install: this file belongs to singula-ai/alego. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/singula-ai/alego/main/.agents/skills/alego-create-upgrade-guide/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/singula-ai/alego

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 alego-create-upgrade-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/singula-ai/alego/alego-create-upgrade-guide/github.svg)](https://agentmods.dev/skills/singula-ai/alego/alego-create-upgrade-guide)
Your own site
<a href="https://agentmods.dev/skills/singula-ai/alego/alego-create-upgrade-guide"><img src="https://agentmods.dev/badge/skills/singula-ai/alego/alego-create-upgrade-guide/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 alego-create-upgrade-guide

Your own site · 80×15
<a href="https://agentmods.dev/skills/singula-ai/alego/alego-create-upgrade-guide"><img src="https://agentmods.dev/badge/skills/singula-ai/alego/alego-create-upgrade-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 853 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 92% 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 5.1 $0.00076 $0.00853
Opus 5.5 $0.00030 $0.00341
Sonnet 5.5 $0.00015 $0.00171
Haiku 4.5 $0.00008 $0.00085

Measured 6d ago against content hash 071178e642d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

alego-create-upgrade-guide 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 6d 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.

Origin

This is a copy

92% identical to dsh-create-upgrade-guide — 14 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.

.agents/skills/alego-create-upgrade-guide/SKILL.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ALEGO Create Upgrade Guide

An upgrade guide tells a reader who runs release vT what to change to run the next release. Write it in the change that introduces the break, as soon as the break is recognized; do not defer it to release preparation.

Scope

Write a guide only for breaks that someone outside the repository can observe after upgrading:

  • alego commands, flags, and profile names;
  • cordis.yml, patch, overlay, and settings keys or their accepted values;
  • persisted user data: Session logs, SQLite stores, and user data directories;
  • TypeScript and Python SDK exports, JSON-RPC, HTTP, and ACP messages;
  • published package names and entry points.

Pre-stable internal APIs whose consumers are all updated in the same change need no guide. A Session-format change still follows type acknowledgements; its guide states only the reader's actions and links that record.

Location

docs/upgrade-guide/v<version>/<item>/guide.md

  • <version> is the version field of the root package.json when you write the guide, for example v0.1.7-rc.2. The guide describes the upgrade from that release to the next one.
  • <item> is a kebab-case name of the changed surface, for example profile-flag-rename.
  • Each item directory holds exactly guide.md, its Chinese counterpart guide.zh.md, and the pairing record guide.i18n.yaml: no index, no attachments.

Maintenance

While the root version is unchanged, the current version directory describes the delta from vT to current master. When a later change touches a surface a guide there covers, update that guide in the same change; delete the guide when the break is reverted. After the version bump, guides in older version directories are frozen; a new break goes into the new version directory. Never write a guide spanning more than one release.

Format

Start from the upgrade-guide template. verify-upgrade-guides enforces:

Read the full file on GitHub · 55 lines

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. 6d ago First seen · 55 lines · 76 tokens per session scan A 071178e642d6

Subscribe to this mod's changes

alego-create-upgrade-guide is a skill published in the GitHub repository singula-ai/alego (109 stars, last pushed 3d ago), licensed MIT. It adds 76 tokens to every session and 853 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to dsh-create-upgrade-guide, differing in 14 lines, and is treated as a copy.

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