mcp6/
├── src/
│   ├── db.js
│   └── index.js
├── scripts/
│   ├── test-db.js
│   └── test-mcp.js
├── .env.example
├── .gitignore
├── compose.yaml
├── opencode.json
├── package.json
└── README.md

npm install
cp .env.example .env
chmod 600 .env
docker compose up -d

PGHOST=localhost
PGPORT=5466
PGDATABASE=mcp_demo
PGUSER=mcp_user
PGPASSWORD=mcp_password

PGPASSWORD=mcp_password psql -h localhost -p 5466 -U mcp_user -d mcp_demo -c "CREATE TABLE IF NOT EXISTS clientes (id SERIAL PRIMARY KEY, nome TEXT NOT NULL, email TEXT NOT NULL UNIQUE, criado_em TIMESTAMP NOT NULL DEFAULT NOW()); INSERT INTO clientes (nome, email) VALUES ('Ana Silva', 'ana@example.com'), ('Bruno Souza', 'bruno@example.com'), ('Carla Lima', 'carla@example.com') ON CONFLICT (email) DO NOTHING; SELECT id, nome, email, criado_em FROM clientes ORDER BY id;"

npm run test:db
npm run test:mcp
opencode mcp list
npm run inspect

/home/leonardo/mcp6/node_modules/.bin/mcp-inspector node /home/leonardo/mcp6/src/index.js --cli --method tools/list
/home/leonardo/mcp6/node_modules/.bin/mcp-inspector node /home/leonardo/mcp6/src/index.js --cli --method tools/call --tool-name listar_clientes --tool-arg limite=3

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "postgres-local": {
      "type": "local",
      "command": ["node", "src/index.js"],
      "enabled": true
    }
  }
}