esquema

esquema is a command for Claude Code from pwdev-solucoes/pwdev-claude-marketplace. It costs 21 tokens per session (472 once invoked), scanned A, original, Apache-2.0.

A read-only PostgreSQL database overview that lists schemas, tables, views, indexes, and rules such as primary and foreign keys.

In plain words
What is it for?
Use it to inspect a PostgreSQL database, review important tables, and find schema problems. It can focus on a particular schema or table.
Why use it?
It helps you understand a database's structure without changing its data. It also points out structural issues such as tables without primary keys or foreign keys without indexes.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the pwdev-postgres plugin — 1 skill, 1 command shipped together

Good fit Use it to inspect a PostgreSQL database, review important tables, and find…

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Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add pwdev-solucoes/pwdev-claude-marketplace
Claude Code
/plugin install pwdev-postgres

Made for: Claude Code.

Or install pwdev-postgres, the plugin that ships this one along with the rest of its 1 skill, 1 command.

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 esquema

README.md
[![agentmods](https://agentmods.dev/badge/commands/pwdev-solucoes/pwdev-claude-marketplace/esquema.svg)](https://agentmods.dev/commands/pwdev-solucoes/pwdev-claude-marketplace/esquema)
Your own site
<a href="https://agentmods.dev/commands/pwdev-solucoes/pwdev-claude-marketplace/esquema"><img src="https://agentmods.dev/badge/commands/pwdev-solucoes/pwdev-claude-marketplace/esquema.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 472 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 $0.00021 $0.00472
Opus 5 $0.00010 $0.00236
Sonnet 5 $0.00004 $0.00094
Haiku 4.5 $0.00002 $0.00047

Measured 3d ago against content hash fa5af1e50d8a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

esquema 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 3d 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.

plugins/pwdev-postgres/commands/esquema.md · 44 lines

What it actually says

/pwdev-postgres:esquema

STEP 0 — Idioma

${CLAUDE_PLUGIN_ROOT}/references/language.md

Gate

list_schemas {} falhou → apontar /pwdev-postgres:init e parar.

STEP 1 — Escopo

Default: todos os schemas de usuário (list_schemas), detalhando public e os schemas listados em .claude/pwdev-postgres-context.md. Refinos de $ARGUMENTS: um schema → detalhar só ele; uma tabela → mergulhar nela (describe completo + índices + constraints).

STEP 2 — Coleta (somente leitura)

  1. list_schemas {} — visão geral.
  2. Por schema no escopo: list_tables {schema, include_views: true}.
  3. Para as tabelas principais (maiores por reltuples ou citadas no contexto): describe_table, list_indexes, list_constraints.
  4. Métricas extras só se necessário, via run_select sempre com LIMIT (ex.: pg_stat_user_tables para seq scans; tamanhos via pg_total_relation_size).

STEP 3 — Saída

Tabela(s) Markdown:

  • Schemas e contagem de tabelas/views
  • Por schema: tabelas com estimativa de linhas (reltuples — estimativa, não COUNT), PK, nº de índices e FKs
  • Detalhe das tabelas principais (colunas, tipos, constraints)
  • Achados (acionáveis): tabelas sem PK · FKs sem índice de apoio · colunas NOT NULL sem default em tabelas grandes · índices duplicados

STEP 4 — Persistir (opcional)

Oferecer salvar em .planning/reports/postgres-esquema-AAAA-MM-DD.md (só com confirmação).

Panorama é leitura — nenhuma mutação neste comando (nenhuma tool é chamada com confirm: true).

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. 3d ago First seen · 44 lines · 21 tokens per session scan A fa5af1e50d8a

Subscribe to this mod's changes

esquema is a command published in the GitHub repository pwdev-solucoes/pwdev-claude-marketplace (2 stars, last pushed today), licensed Apache-2.0. It adds 21 tokens to every session and 472 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 2026-09-03.