Cloudflare Dns

Cloudflare DNS

Quick Start

1. Clarify target:

• domain/host (skills.01mvp.com)
• record type (A/AAAA/CNAME/TXT)
• target value
• proxied on/off

2. Run an auth precheck before any write action. 3. Execute idempotent change (query existing record first, then create/update). 4. Verify with DNS lookup + HTTP check + (if needed) Pages domain status.

First-Use Auth Gate (Required)

Before first DNS write, check token:

zsh -lic 'echo ${CLOUDFLARE_API_TOKEN:+SET}'

If empty, stop and prompt user to configure token first.

Use this prompt style:

• 我先帮你配置，但需要你先提供 Cloudflare API Token（不是 wrangler OAuth）。
• Token 最少权限：
• Zone -> DNS -> Edit
• Zone -> Zone -> Read
• 如果要查 Pages 域名状态，再加：Account -> Cloudflare Pages -> Edit
• Zone Resources 只选目标域名（最小权限原则）。
• 配置完成后执行：

export CLOUDFLARE_API_TOKEN='YOUR_TOKEN'

Optional persistent setup:

echo "export CLOUDFLARE_API_TOKEN='YOUR_TOKEN'" >> ~/.zshrc
source ~/.zshrc

Standard Execution Pattern

1) Read current DNS record

python - <<'PY'
import json, os, urllib.request

token = os.environ['CLOUDFLARE_API_TOKEN']
zone_id = '<ZONE_ID>'
name = 'skills.01mvp.com'
url = f'https://api.cloudflare.com/client/v4/zones/{zone_id}/dns_records?name={name}'
req = urllib.request.Request(url, headers={'Authorization': f'Bearer {token}'})
print(json.dumps(json.load(urllib.request.urlopen(req)), ensure_ascii=False, indent=2))
PY

2) Create/Update record

• If record not found: create.
• If record exists but value/proxy mismatch: update.
• If already correct: report "no-op".

3) Pages custom domain binding (if required)

• Ensure domain is added to the Pages project.
• If not added, create binding first, then ensure DNS points to <project>.pages.dev.

4) Verification

dig +short CNAME skills.01mvp.com
dig +short skills.01mvp.com
curl -I https://skills.01mvp.com

For Pages validation, also check domain status via Pages API/wrangler.

Safety Rules

• Always query before write (no blind overwrite).
• Prefer least-privilege token scope.
• Never print full token in output.
• Report exact record changed: name, type, content, proxied, timestamp.
• If API returns auth error, explicitly tell user missing scope instead of retrying blindly.