Updated 3 November 2026
How to send LinkedIn post engagers to Clay by webhook
Send the people who like and comment on LinkedIn posts to a Clay table by webhook. Each tracked source has its own webhook.
What does Cornersight send to Clay?
Cornersight sends one lead per request, with name, LinkedIn URL, job title, company, company domain, industry and size, country, the post and comment, and isIcp (true when the lead matches your ICP filter).
Which LinkedIn sources can feed Clay?
Any tracked source can feed Clay: a person's profile, a company page, a single post or a keyword search. Cornersight picks up new posts on each daily run.
How do I connect a Cornersight webhook to Clay?
Connecting takes five steps: make a Clay webhook table, track a source, set your ICP, paste the Clay URL on the source, and send a test.
- In Clay, open a workbook, click + Add, search for Webhooks and click Monitor webhook. Copy the webhook URL.
- In Cornersight, track a profile, company page, post or keyword search.
- Set your ideal customer profile on that source: job titles, companies and countries.
- On the Leads page, pick the source, open the table's + menu and choose Webhook. Paste the Clay URL into Endpoint URL, choose All leads or ICP only, tick Auto-add future matching leads, and save. Saving a URL the first time also sends the leads you already have.
- Click Test. Cornersight sends one sample lead (Jane Cooper at Acme Corp) marked as a test. Check that a row appears in Clay.
Can I send only ICP leads to Clay?
You choose. Send all leads, or only leads that match your ICP filter (ICP only). Each lead carries isIcp, so you can also filter in Clay.
Can several sources go into one Clay table?
Yes. Each source has its own webhook setting, so you can point several sources at the same Clay webhook URL. Each row's trackedProfile says which source it came from.
How do I check that a webhook really came from Cornersight?
Every webhook delivery is signed with HMAC-SHA256, so your receiver can check it. Check the X-Cornersight-Signature header with your whsec_ signing secret. The method is in the API docs at https://app.cornersight.io/docs#webhook-security. Clay does not check signatures, so this matters when you route leads through your own server or n8n first.
Does Cornersight find emails for Clay?
We don't sell emails. Connect your own email finder (for example LeadMagic) and Cornersight finds emails for your ICP leads with your own credits. You can also find emails in Clay.
What does it cost?
Cornersight costs 1 credit per lead. Starter is $99 a month for up to 15,000 new leads, and the 7-day free trial needs no card.
| Plan | Price | Credits a month |
|---|---|---|
| Starter | $99 / month | 15,000 |
| Growth | $169 / month | 30,000 |
| Pro | $329 / month | 60,000 |
| Scale | $599 / month | 120,000 |
Clay bills its own rows and credits separately.
Is there a limit on how many leads Clay accepts?
Clay's docs say a webhook source is limited to 50,000 submissions, and deleting rows does not reset the count. On Clay's Enterprise plans, Auto-delete removes this limit. On other Clay plans, create a new Clay webhook when you get close and paste the new URL into Cornersight.
Works with your stack
FAQ
Does Cornersight connect to Clay directly?
No. Cornersight sends leads by webhook to a URL you set, and Clay can receive data by webhook. Cornersight's native pushes are HeyReach and PlusVibe.
Do I need my LinkedIn login?
No. Cornersight finds who engaged without your LinkedIn login or cookies. Nothing runs on your account.
Can I use n8n instead of Clay?
Yes. The same webhook can point at any URL, including an n8n workflow. See [Send LinkedIn engagers to n8n].
How to send LinkedIn post engagers to Clay by webhook