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Integrate Klaviyo with OpenClaw by building a small OpenClaw skill that holds your Klaviyo API credentials in the platform’s secret store (or environment variables), implements a few explicit actions (server-side event send, profile upsert, list subscription), and exposes a public webhook endpoint (or an externally hosted webhook relay) to receive and validate Klaviyo webhooks; instrument each action with request/response logging, retries and backoff, and move any long-running or stateful work (queues, retry persistence, scheduled jobs) to an external service rather than relying on the agent runtime.
Use Klaviyo’s HTTP APIs to submit events or upsert profiles. Below is a working Node.js server-side example that posts an event to Klaviyo’s “track” endpoint. Replace KLAVIYO_PUBLIC_TOKEN with your Klaviyo site token or server token as appropriate.
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// <b>//</b> Node.js example using native fetch (Node 18+) or a fetch polyfill
const fetch = global.fetch || require('node-fetch');
async function sendKlaviyoEvent(eventName, customerProperties = {}, properties = {}) {
const KLAVIYO_TRACK_URL = 'https://a.klaviyo.com/api/track';
const token = process.env.KLAVIYO_PUBLIC_TOKEN; // <b>//</b> stored in the secret store
const payload = {
token, // <b>//</b> Klaviyo site token used by the track endpoint
event: eventName,
customer_properties: customerProperties,
properties
};
const res = await fetch(KLAVIYO_TRACK_URL, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify(payload)
});
// <b>//</b> Useful for logs and debugging: record status and body
const text = await res.text();
if (!res.ok) {
throw new Error(`Klaviyo track failed: ${res.status} ${text}`);
}
return text;
}
Simple cURL equivalent:
# <b>//</b> Replace TOKEN and event data appropriately
curl -X POST 'https://a.klaviyo.com/api/track' \
-H 'Content-Type: application/json' \
-d '{
"token":"YOUR_KLAVIYO_PUBLIC_TOKEN",
"event":"Signed Up",
"customer_properties":{"$email":"[email protected]"},
"properties":{"plan":"pro"}
}'
// <b>//</b> Express webhook receiver pseudocode.
// <b>//</b> Validate signature per Klaviyo docs before forwarding or enqueuing.
const express = require('express');
const bodyParser = require('body-parser');
const fetch = require('node-fetch');
const app = express();
app.use(bodyParser.json({ limit: '1mb' }));
app.post('/webhook/klaviyo', async (req, res) => {
const rawBody = JSON.stringify(req.body);
// <b>//</b> Validate signature here using the header specified by Klaviyo.
// <b>//</b> If invalid, return 401.
// if (!validateSignature(req.headers, rawBody)) return res.status(401).send('invalid');
// <b>//</b> Forward to skill endpoint or enqueue for background processing.
try {
// <b>//</b> Example: call an internal skill HTTP endpoint (replace SKILL_URL)
const SKILL_URL = process.env.SKILL_FORWARD_URL;
const forwardRes = await fetch(SKILL_URL + '/handle-klaviyo-webhook', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: rawBody
});
if (!forwardRes.ok) {
// <b>//</b> Persist or requeue for retry if the skill is temporarily unavailable.
return res.status(502).send('forward failed');
}
return res.status(200).send('ok');
} catch (err) {
// <b>//</b> Log and return 500 so Klaviyo can retry
console.error('webhook forward error', err);
return res.status(500).send('error');
}
});
app.listen(3000);
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1
Direct answer: 4xx/5xx failures mean Klaviyo is rejecting or failing to process OpenClaw webhooks — usually due to a wrong endpoint/headers/auth, payload/schema or signature mismatch (4xx) or server-side errors, timeouts, or rate‑limiting at Klaviyo (5xx). Check configs, logs, and replay attempts.
2
The feed usually fails because the exported CSV/JSON from OpenClaw doesn’t match Klaviyo’s required schema or is missing required fields — common causes are wrong header names, missing profile identifiers (like email), missing catalog keys (like id, title, price, image_url), malformed JSON structure, incorrect data types, or wrong MIME/content-type so Klaviyo can’t parse the payload.
Validate structure and typing, align header names exactly, ensure UTF-8 and correct Content-Type, and include required identifiers. Test with a minimal sample file Klaviyo accepts before full import.
3
OpenClaw profiles create duplicates in Klaviyo when the integration sends data that Klaviyo doesn't recognize as the same person—most commonly because external_id or email aren’t sent consistently or normalized, or the flow uses a create call instead of an update/merge. Race conditions or missing idempotency also cause parallel creates.
Common causes:
Fixes: always send both email and external_id, normalize emails, query Klaviyo for an existing profile before creating, use idempotency keys, and ensure your OpenClaw skill maps identifiers reliably.
// POST to Klaviyo Profiles (example)
fetch("https://a.klaviyo.com/api/profiles", {
method: "POST",
headers: { "Content-Type":"application/json", "Authorization":"Klaviyo-API-Key YOUR_KEY" },
body: JSON.stringify({
// ensure both are present and normalized
email: "[email protected]",
external_id: "user-1234"
})
})
4
Send the OpenClaw event name as Klaviyo's "event", map the user identity (email or external_id) into Klaviyo customer_properties, place sku and other item details into properties (or an items array), and put total into properties.value or properties.total. Post to Klaviyo's Track API using your API key from env.
// minimal webhook handler
export async function handle(req,res){
const oc = await req.json()
const body = {
token: process.env.KLAVIYO_API_KEY,
event: oc.event || 'order_placed',
customer_properties:{email:oc.user?.email},
properties:{sku:oc.payload?.sku,total:oc.payload?.total}
}
await fetch('https://a.klaviyo.com/api/track',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(body)})
res.status(200).end()
}
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