Reply
From
To
Message
Li Wei
WeChat API
for products and agents
Read and answer your WeChat Official Account messages from your own product, with the same Zernio API you use for WhatsApp, LINE and social.
- SOC 2
- GDPR compliant
- 99.97% uptime
- Under 50ms response
Join 200,000+ of the world's most ambitious developers and builders
Why Zernio?
Everything between you and your first message, handled
Zernio API
Encryption handled
Safe mode messages are verified and decrypted for you
Fixed IPs to whitelist
Every call to WeChat leaves from the same few addresses
Tokens kept fresh
Access tokens renew without logging out your other tools
One API for every channel
Same inbox and webhooks as WhatsApp, LINE and social
Building it yourself
A server WeChat can reach
Signature checks, AES decryption and a 5 second reply deadline
A static IP to run
WeChat refuses API calls from anything off the whitelist
Token juggling
A fresh token can cut off every other tool on the account
No inbox
You build the UI, contacts and history yourself
From zero to first WeChat reply in minutes
API IP whitelist
IP 1
208.77.246.240
IP 2
208.77.246.241
IP 3
208.77.246.242
Whitelist our IPs
Add Zernio's IPs to the API IP whitelist of your verified Service Account.
Connect WeChat
AppID
wx1a2b3c4d5e6f7a8b
AppSecret
••••••••••••9e0f
Server URL
zernio.com/api/webhook/wechat/…
Token
aB3d••••••••Qr9t
EncodingAESKey
kq3T••••••••••Lw7
Paste the keys both ways
Give Zernio your AppID and AppSecret, then paste the Server URL, Token and EncodingAESKey it returns.
Conversations
Òscar
+34 634 44 21 23
All works!
Whatsapp Bus...
+34 639 32 11 23
Hey, i have a question...
Every message in one inbox
WeChat messages land next to your WhatsApp, LINE and social DMs, ready to answer.
Everything your Official Account receives, in your product
Conversations
Li Wei
When will my order ship?
Marta Ruiz
Can I change the size?
Jonas Weber
Thanks, got it!
Unified inbox
Text, images, voice, video, locations and links, next to every other channel.
Replies
Answer through WeChat's customer service messages, up to 5 within 48 hours of the customer's last message.
Reconnected
Server URL
KeptToken
KeptEncodingAESKey
KeptSafe reconnects
Reconnecting keeps the Token and EncodingAESKey, so nothing has to be pasted into WeChat again.
When a message contains
"tracking"
Reply with
Here is your tracking link: zernio.link/t/8f2a
Automations
Keyword replies and automations run on WeChat messages like on every other channel.
POST /webhooks/zernio
{
"event": "message.received"
"platform": "wechat"
"from": "Li Wei"
"text": "When does it ship?"
}
Webhooks
Get message.received on your server for every new WeChat message, in the same shape as every channel.
Encrypt
8pWq3Zr0dKx+T1vYb9mQ2h7LsNc4…
Safe mode
Messages stay encrypted between WeChat and Zernio, with keys generated for each account.
Let an agent run WeChat end to end
Every step runs through Zernio's MCP server, so an AI agent can read WeChat messages and draft replies inside the 48 hour window without anyone opening the dashboard.
› claude
Claude Code v2.1.19
Opus 4.5 · Claude Max
~/software
›
✓ registered · https://mcp.zernio.com/mcp
✓ signed in over OAuth · no key pasted
✓ call_tool · read 6 WeChat chats
✓ 6 replies drafted · nothing sent yet
Build it yourself with 8 SDKs
or the CLI
Read and answer WeChat messages with one REST call from Node, Python, Go, Ruby, Java, PHP, .NET, or Rust, or script it from the terminal with the Zernio CLI.
Read the docsimport Zernio from '@zernio/node';const zernio = new Zernio(); // reads ZERNIO_API_KEYconst { data } = await zernio.messages.sendInboxMessage({path: { conversationId: 'conv_3c1d' },body: { accountId: 'acc_8f2a', message: 'Your order ships tomorrow from Shanghai' },});
Node
Python
Go
Ruby
Java
PHP
.NET
Rust
Messages on one meter
A WeChat account counts as one connected account on your plan. The messages you send share the message allowance with every other channel.
After 10,000 free a month
$1
Per 10,000 messages sent
Messages received
Free
WeChat's own fees
Paid to WeChat
Frequently Asked Questions
Ship WeChat today
No credit card, no sales call. Connect your WeChat Official Account and start replying today.
- SOC 2
- GDPR compliant
- 99.97% uptime
- Under 50ms response