dare-migrate

A planning layer for rebuilding a legacy system in a different technology stack. It turns an earlier analysis of the old system into a migration strategy and Gherkin scenarios that describe the behavior the new system must preserve.

In plain words
What is it for?
Use it after the legacy system has been reverse-engineered and the migration command has created its files, to fill in migration plans and real parity scenarios.
Why use it?
It provides a written behavior contract, reducing the chance that the replacement works differently from the original.

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/dewtech-technologies/dare-method/dare-migrate
Any agent
npx skills add dewtech-technologies/dare-method --skill dare-migrate
Clone the repo
git clone --depth 1 https://github.com/dewtech-technologies/dare-method

Made for: Claude Code, Codex.

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 940 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00063 $0.00940
Opus 5 $0.00032 $0.00470
Sonnet 5 $0.00013 $0.00188
Haiku 4.5 $0.00006 $0.00094

Measured 2d ago against content hash 71d95e9a32ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dare-migrate 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 2d 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.

implementations/antigravity/.agents/skills/dare-migrate/SKILL.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DARE Migrate Skill — Migração com paridade (brownfield Fase 2)

Equivalente no terminal: dare migrate --ai

Você é o agente que transforma o entendimento do legado em um plano de migração com paridade. Esta skill é a camada semântica: roda depois do comando dare migrate, que já leu os artefatos do reverse/dna e gerou os esqueletos. Sua função é escrever a estratégia de migração e os cenários Gherkin de paridade reais — o contrato comportamental que garante uma reimplementação fiel ao legado.

Pré-requisito: o comando dare migrate --to <stack> precisa ter rodado antes (gera DARE/MIGRATION/MIGRATION.md, migration-facts.json, parity/*.feature). Que por sua vez exige dare reverse já executado. Se faltar, peça ao usuário para rodar na ordem.

Quando usar esta skill

  • Projeto legado entendido (reverse + dna) que será reimplementado em outra stack.
  • Acabou de rodar dare migrate e há seções <!-- AGENT --> / # AGENT em aberto.

Passo a passo

1. Carregar contexto (não re-varrer)

Leia migration-facts.json (origem/alvo/módulos/blocking gaps), IDEIA.md + REVERSE/module-*.md e PROJECT-DNA.md. Abra arquivos-chave do legado só o necessário para inferir comportamento.

2. Preencher DARE/MIGRATION/MIGRATION.md

  • Decisão de Paradigma — mudou (procedural→OO, monólito→serviços)? Decisão + justificativa.
  • Estratégia — big-bang vs. strangler/parallel-run; ordem dos módulos; feature flags.
  • Registro de Risco — tratar cada blocking gap (🔴) + riscos de regressão/dados/performance.
  • Arquitetura-alvo — na stack-alvo, alinhada ao DNA quando o paradigma for preservado.
  • Cutover & Rollback — passos, validação de paridade (rodar .feature), go/no-go, rollback.

3. Gherkin de paridade (parity/<módulo>.feature)

Um Scenario por fluxo observável, derivado do comportamento legado real: GivenWhenThen idêntico ao legado. Inclua bordas/formatos (arredondamento, máscaras). É o contrato de aceite da reimplementação na stack-alvo.

Read the full file on GitHub · 65 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. 2d ago First seen · 65 lines · 63 tokens per session scan A 71d95e9a32ad

Subscribe to this mod's changes

dare-migrate is a skill published in the GitHub repository dewtech-technologies/dare-method (5 stars, last pushed 1mo ago), licensed MIT. It adds 63 tokens to every session and 940 once invoked, about $0.0003 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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