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.
npx agentmods add skills/rodolfochicone/rc-project/rc-sqlnpx skills add rodolfochicone/rc-project --skill rc-sqlgit clone --depth 1 https://github.com/rodolfochicone/rc-projectWhat 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 | $0.00038 | $0.00506 |
| Opus 5 | $0.00019 | $0.00253 |
| Sonnet 5 | $0.00008 | $0.00101 |
| Haiku 4.5 | $0.00004 | $0.00051 |
Grade A, and why
rc-sql 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.
What it actually says
Banco de dados (SQL) — guias por tarefa
Guias práticos de SQL. Leia o guia da tarefa em references/ antes de agir — cada um traz
o checklist, os comandos de verificação e os critérios de aceite. Sempre leia o schema e os
índices reais (via \d, information_schema ou o DDL do repo) antes de recomendar qualquer
mudança; não presuma a estrutura. Os exemplos usam PostgreSQL, mas os princípios valem para
qualquer banco relacional.
Roteamento
| Tarefa | Guia |
|---|---|
| Otimização de queries (EXPLAIN, índices, N+1, paginação) | references/query-optimization.md |
| Design de schema (normalização, tipos, constraints, chaves) | references/schema-design.md |
| Segurança e execução (transações, locks, migrations, produção) | references/safety.md |
Princípios sempre válidos
- Meça com EXPLAIN antes de otimizar — não adivinhe. Nenhum ajuste de índice ou query se justifica sem o plano de execução real na frente.
- O índice certo bate a query esperta. Antes de reescrever uma query complexa, verifique se falta um índice.
- Read-only por padrão (Rule 9). Para análise, só
SELECT/EXPLAIN; escrita e DDL vão no relatório como recomendação, para o usuário executar ou autorizar. O hookdb-guardbloqueia escrita viapsql/mysql/sqlite3no Bash — é rede de segurança, não a regra: acesso via MCP passa por fora dele. - O schema é o alicerce. Corrija o schema antes de contornar sua falha em código (validação duplicada, joins gambiarra, etc.).
Error Handling
- Sem acesso ao banco: analise o schema/DDL e as queries do repositório estaticamente e diga explicitamente que o
EXPLAINreal e a verificação de índices ficaram pendentes.
What ships with it
3 files 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.
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.
- 2d ago First seen · 34 lines · 38 tokens per session scan A 7a3c88235ecd
rc-sql is a skill published in the GitHub repository rodolfochicone/rc-project (19 stars, last pushed 27d ago), licensed MIT. It adds 38 tokens to every session and 506 once invoked, about $0.0002 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.
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