Integrations / Advertising
Nextdoor CAPI
Server-side conversion events for Nextdoor Conversions API.
Datafly Signal delivers first-party events to Nextdoor CAPI server-to-server from infrastructure you control, using a pre-built blueprint that maps your event schema to the payload Nextdoor CAPI expects.
Why route Nextdoor CAPI through Datafly Signal
Conversions survive ad blockers and tracking prevention
A browser tag served from an advertising domain is blocked outright for part of your traffic, and Safari's ITP shortens the cookies it can set. Signal sends the event from your own server, so the conversions Nextdoor CAPI optimises against are not filtered by the browser.
Email and phone number hashed before it leaves your infrastructure
Signal normalises (trim and lowercase) and applies SHA-256 inside your own deployment, so Nextdoor CAPI receives match keys rather than raw personal data.
Client IP and user agent are carried in the payload
Both are taken from the original visitor request rather than your server, which is what Nextdoor CAPI needs to attribute the event to the right session.
Click identifiers are captured and replayed
Signal stores clickid, click_id first-party at collection time and attaches them to the conversion later, so attribution survives even when the original landing cookie has expired.
One consent decision governs every destination
Nextdoor CAPI is gated by the same consent state as the rest of your stack, so a withdrawal applies everywhere at once.
What ships in the blueprint
Mapped events
add_to_cartgenerate_leadpagepurchasesign_upview_itemVertical presets
Retail, Lead Generation / Local Services. Each preset starts from a working configuration for that vertical rather than a blank field map.
Full field mappings, configuration fields, and troubleshooting are in the Nextdoor CAPI documentation.
Frequently asked questions
Does Datafly Signal integrate with Nextdoor CAPI?
Yes. Datafly Signal delivers first-party events to Nextdoor CAPI server-to-server from infrastructure you control, using a pre-built blueprint that maps your event schema to the payload Nextdoor CAPI expects. The integration is included in every deployment at no additional cost.
How is server-side Nextdoor CAPI tracking different from the Nextdoor CAPI tag?
The Nextdoor CAPI tag runs in the visitor's browser, so it is subject to ad blockers, tracking prevention, and page-unload races. Signal collects the event through a first-party endpoint on your own domain and delivers it to Nextdoor CAPI from your server, so delivery does not depend on browser conditions.
What personal data is sent to Nextdoor CAPI?
Email and phone number are normalised and SHA-256 hashed inside your own deployment before delivery, so Nextdoor CAPI receives match keys rather than raw personal data. Which fields are sent is configured per pipeline.
Which events can Signal send to Nextdoor CAPI?
The blueprint ships with mappings for add_to_cart, generate_lead, page, purchase, sign_up, view_item. Any event in your schema can be mapped to Nextdoor CAPI through pipeline configuration without a code change.
Do I need to keep the Nextdoor CAPI tag on my site?
No. Server-side delivery is designed to replace the tag. Most teams run both briefly during migration, using shared event IDs so Nextdoor CAPI deduplicates, then remove the tag once server-side volume matches.
Other advertising integrations
Ready to move Nextdoor CAPI server-side?
See how Datafly Signal delivers first-party events to Nextdoor CAPI from infrastructure you control, with hashed identity and consent enforcement built in.