API Pricing Standards

I. Basic Billing Rules

1. API Call Billing

• Unit Price: Each API call costs 0.01 CNY
• Billing Method: Pay-per-use, deducting 0.01 CNY per call
• Calculation Formula: Available calls = Current balance ÷ 0.01

2. Scope of Application

All API interfaces are billed according to this standard, including but not limited to:

API Interface	Function Description	Billing Standard
User Registration API	User registration function	0.01 CNY/call
User Login API	User login function	0.01 CNY/call
Change Password API	Change user password	0.01 CNY/call
Change QQ API	Change user QQ number	0.01 CNY/call
Change Avatar API	Change user avatar	0.01 CNY/call
Sign In API	User sign-in function	0.01 CNY/call
Feedback API	User feedback function	0.01 CNY/call
Email API	Email sending function	0.01 CNY/call
Add Balance API	Add user balance	0.01 CNY/call
Deduct Balance API	Deduct user balance	0.01 CNY/call
Account API	Account information query	0.01 CNY/call
VIP API	VIP information query	0.01 CNY/call
Add Binding API	Add user binding	0.01 CNY/call
Get Binding List API	Get binding list	0.01 CNY/call
Initiate Binding API	Initiate user binding	0.01 CNY/call
View Bound Users API	View bound user information	0.01 CNY/call

II. Recharge Methods

1. Recharge Amount Options

• ¥1, ¥5, ¥10, ¥100, ¥300, ¥500, ¥1000
• Support custom amount recharge (minimum 0.01 CNY)

2. Payment Methods

• WeChat Pay

3. Redemption Codes

• Support redemption code exchange function
• Each redemption code can only be used once per user
• Example redemption code: XUNAN666 (redeem 10 CNY)

III. Balance Management

1. Balance Query

• Users can view current balance in the recharge center
• The system automatically calculates and displays the estimated number of available API calls

2. Balance Change Records

• Record content includes:
  • Change type (1-Recharge, 2-Deduct)
  • Change amount
  • Balance before change
  • Balance after change
  • Change description
  • Change time

3. Insufficient Balance Handling

• When the developer's balance is insufficient, API calls will fail and return a prompt
• Prompt message: Insufficient developer balance, current balance: X CNY, please recharge and try again!

IV. Billing Examples

Example 1: Basic Call

• User balance: 10 CNY
• Available calls: 10 ÷ 0.01 = 1000 times
• Balance after 1 call: 9.99 CNY
• Remaining available calls: 999 times

Example 2: Batch Calls

• User balance: 50 CNY
• Balance after 100 consecutive calls: 49 CNY
• Deducted amount: 100 × 0.01 = 1 CNY

Example 3: Call After Recharge

• User balance: 5 CNY
• Balance after recharging 10 CNY: 15 CNY
• Available calls: 15 ÷ 0.01 = 1500 times

V. Notes

1. Balance Precision: Balance is accurate to 2 decimal places
2. Minimum Recharge: Minimum recharge amount is 0.01 CNY
3. Insufficient Balance: Cannot call API when balance is insufficient, need to recharge first
4. Billing Records: All billing operations have detailed log records
5. Redemption Code Limit: Each redemption code can only be used once per user

VI. API Call Billing Process

1. User initiates API request
   ↓
2. System verifies user identity and permissions
   ↓
3. Check if user balance is sufficient (≥ 0.01 CNY)
   ↓
4. Sufficient balance: Execute business logic
   Insufficient balance: Return error prompt
   ↓
5. Deduct 0.01 CNY balance
   ↓
6. Record balance change log
   ↓
7. Return API response result

VII. Frequently Asked Questions

Q: Why is there a charge for every call? A: API calls consume server resources and bandwidth. Pay-per-use is a reasonable billing method.

Q: What if my balance is insufficient? A: Please go to the recharge center to recharge. WeChat Pay and redemption code exchange are supported.

Q: How can I check my balance and call count? A: After logging in, enter the recharge center to see the current balance and estimated available API calls.

Q: How to get redemption codes? A: Redemption codes are distributed by platform administrators. Each redemption code can only be claimed once per user.