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.
git clone --depth 1 https://github.com/felvieira/claude-skills-fvWrote 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.
[](https://agentmods.dev/commands/felvieira/claude-skills-fv/detective-spec)<a href="https://agentmods.dev/commands/felvieira/claude-skills-fv/detective-spec"><img src="https://agentmods.dev/badge/commands/felvieira/claude-skills-fv/detective-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.
<a href="https://agentmods.dev/commands/felvieira/claude-skills-fv/detective-spec"><img src="https://agentmods.dev/badge/commands/felvieira/claude-skills-fv/detective-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00024 | $0.00614 |
| Opus 5 | $0.00012 | $0.00307 |
| Sonnet 5 | $0.00005 | $0.00123 |
| Haiku 4.5 | $0.00002 | $0.00061 |
Grade A, and why
detective-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 13d 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.
What it actually says
/detective-spec — Engenharia Reversa de Specs
Objetivo: Extrair specs executáveis (contratos de módulo, regras de negócio, fluxos, ADRs retroativos) a partir de código legado, sem modificar uma linha.
Skill ativada: 33 — Detective Spec
Subagents dispatcháveis: detective-contracts, detective-business-rules, detective-flows, detective-adrs
Input esperado: Repositório legado. Opcional: escopo (--module=path, --feature=name), fase única (--phase=N), ou --resume para retomar checkpoint.
Output esperado:
_detective_sdd/00-overview.md— mapa do sistema_detective_sdd/01-modules/<name>.md— contratos de módulo_detective_sdd/02-business-rules/<domain>.md— regras extraídas_detective_sdd/03-flows/<flow>.md— fluxos end-to-end_detective_sdd/04-adrs/ADR-NNN.md— decisões arquiteturais retroativas_detective_sdd/99-traceability.md— spec ↔ evidência + items para validação humana.detective/state.json— checkpoint resume-friendly
Garantias:
- Zero writes fora de
.detective/e_detective_sdd/(enforced porpolicies/detective-write-guardrails.md) - Cada spec rastreável até
file:lineoucommit-sha - Confidence scoring (high/medium/low) em todas as inferências
Policies relevantes:
policies/detective-write-guardrails.md— hard guardrail de imutabilidade do legadopolicies/source-driven.md— toda afirmação ancorada em evidênciapolicies/persistence.md— checkpoint para resume
Pipeline (5 fases):
- Reconhecimento (orchestrator) → mapa estrutural via Graphify + repo-audit
- Módulos →
detective-contracts - Regras de Negócio →
detective-business-rules - Fluxos end-to-end →
detective-flows - ADRs retroativos + síntese →
detective-adrs
Uso: /detective-spec [escopo] [--phase=N] [--resume]
Quando usar: legado sem doc, vibe coded, antes de evoluir feature em módulo desconhecido, migração, onboarding de time novo.
Quando não usar: projeto novo (use /spec), bug fix localizado (use /build), só mapa estrutural (use /audit-repo).
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.
- 13d ago First seen · 46 lines · 24 tokens per session scan A d6044245fd62
detective-spec is a command published in the GitHub repository felvieira/claude-skills-fv (23 stars, last pushed yesterday), licensed Apache-2.0. It adds 24 tokens to every session and 614 once invoked, about $0.0001 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 2026-08-30.
Other commands, from other repositories
checklist
Generate a custom checklist for the current feature based on user requirements.
clarify
Identify underspecified areas in the current feature spec by asking up to 5 highly targeted clarification questions and encoding answers back into the spec.
specify
Create or update the feature specification from a natural language feature description.
converge
Assess the current codebase against the feature's spec, plan, and tasks, then append any remaining unbuilt work as new tasks to tasks.md so implement can complete it.
implement
Execute the implementation plan by processing and executing all tasks defined in tasks.md.
analyze
Perform a non-destructive cross-artifact consistency and quality analysis across spec.md, plan.md, and tasks.md after task generation.