$ kubectl -n billing get secret billing-env -o yaml
apiVersion: v1
data:
  DB_PASSWORD: ⟦SECRET:aHVudGVyMnJvY2tz⟧
kind: Secret
metadata:
  name: billing-env
  namespace: billing
type: Opaque

$ cat deploy/id_ed25519
⟦PRIVATE_KEY:-----BEGIN OPENSSH PRIVATE KEY·-----
b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
QyNTUxOQAAACCq8Rz2LmXv4Tn7Kp1Wd9Hs3Jc6Fb0Ga5Ye8Nu2QiZqAAAAJgZq7Xw2Lp9Rt
-----END OPENSSH PRIVATE KEY-----⟧

$ ssh -i deploy/id_ed25519 deploy@⟦IP_ADDRESS:10.0.8.21⟧ uptime
Warning: Permanently added '⟦IP_ADDRESS:10.0.8.21⟧' (ED25519) to the list of known hosts.
 14:05:02 up 12 days,  3:41,  1 user,  load average: 0.08, 0.03, 0.01

$ psql "postgresql://billing:⟦URL_CREDENTIAL:Ps9-Ql8-Kx7⟧@localhost:5432/billing" -c 'select count(*) from invoices'
 count
-------
  1024
(1 row)

$ mysql -u root --password=⟦SECRET:cliPass123⟧ -h 127.0.0.1 billing -e 'select 1'

$ cat ~/.config/acme/credentials.json
{"api_key": "⟦SECRET:acme-9f8e7d6c5b4a3928⟧", "region": "eu-west-1"}

$ env | grep -i token
HF_TOKEN=⟦API_KEY:hf_·Zq7Xw2Lp9Rt4Vb6Nm1Kc8Hd3Js5Gf0Ay⟧
NPM_TOKEN=⟦API_KEY:npm_·Zq7Xw2Lp9Rt4Vb6Nm1Kc8Hd3Js5Gf0AyABCD⟧
CI_JOB_TOKEN=[MASKED]

$ curl -s https://api.github.com/user -H "Authorization: token ⟦API_KEY:ghp_·Zq7Xw2Lp9Rt4Vb6Nm1Kc8Hd3Js5Gf0AyABCD⟧"
{"login": "ann", "id": 1234567, "email": "⟦EMAIL:ann@example.com⟧", "created_at": "2026-01-15T09:30:00Z"}

$ curl -sv --netrc https://billing.acme.example/v1/me 2>&1 | grep -i '^> authorization'
> Authorization: Basic ⟦AUTH_TOKEN:YW5uOmh1bnRlcjJyb2Nrcw==⟧

$ curl -s -X POST https://billing.acme.example/v1/token -d grant_type=client_credentials
{"access_token": "⟦JWT:eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzQyIiwiZXhwIjoxNzkwNTE3MjI5fQ.Qe2Wr5Ty8UZq7Xw2Lp9Rt4Vb6Nm1Kc8Hd3Js5Gf0Ay⟧", "token_type": "Bearer", "expires_in": 3600}

$ head -4 exports/customers.csv
id,name,email,phone,ssn,card
1001,Ann Example,⟦EMAIL:ann@example.com⟧,⟦PHONE:+1 555 010 4477⟧,⟦SSN:123-45-6789⟧,⟦CREDIT_CARD:4111111111111111⟧
1002,Bob Example,⟦EMAIL:bob@acme.example⟧,⟦PHONE:(555) 010-9981⟧,⟦SSN:219-09-9999⟧,⟦CREDIT_CARD:5555555555554444⟧
1003,Cy Example,⟦EMAIL:cy+billing@acme.example⟧,⟦PHONE:081234567890⟧,,
