Send webhook notifications from Circle.so community events via Workflows
domain: circle.so · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Circle.so has no standalone webhook-subscription API — webhooks are configured as a 'Send webhook' action inside a Workflow (Settings > Workflows)
Create a Workflow and choose a trigger such as a member joining the community, a member being removed, a new post, or a new comment
Add the 'Send webhook' action and specify a destination URL — Circle POSTs the event's data to it when the workflow runs
Since Circle does not document a signature header or shared secret for these webhooks, validate/allowlist requests by other means (e.g. a secret path segment) rather than assuming payload authenticity
Confirm the account plan includes Workflows before relying on this — it isn't available on all plans
Known gotchas
No HMAC or signature verification scheme is documented for Circle.so webhooks — don't assume payload authenticity beyond keeping the URL secret
This is UI/workflow-configured only; there is no REST endpoint to programmatically create or list webhook subscriptions
Don't confuse Circle.so (community platform, help.circle.so) with the unrelated company 'Circle' (developers.circle.com, USDC/stablecoin infrastructure) when searching docs
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