Nextdoor CAPI

What Is Nextdoor CAPI?

Nextdoor ads are targeted advertisements on the Nextdoor platform, a social networking service for neighborhoods. These ads are designed to reach local audiences, leveraging user data to provide relevant content based on geographical location and community interests. Businesses can use Nextdoor ads to connect with nearby potential customers, promoting services, events, and offers in a trusted, community-centric environment.

Nextdoor CAPI (Conversions API) allows businesses to track and measure the effectiveness of their Nextdoor ads by directly sending conversion data from their server to Nextdoor. This integration helps improve ad targeting and performance tracking by providing more accurate and comprehensive data on user actions, such as purchases or sign-ups, ensuring that businesses can optimize their advertising strategies effectively.

What are the benefits of integrating MetaRouter with Nextdoor CAPI?

  • Reduced Latency: Eliminates client-side tags, resulting in faster page load times.
  • Tag Management: Simplifies the removal and management of Nextdoor tags.
  • Data Accuracy: Ensures accurate and reliable data collection via server-to-server integration.
  • Improved Targeting: Enhances ad campaign optimization for better ROI.

Getting Started - From Your Nextdoor Account

  • Apply for API access: Please follow the instructions here to apply for API access. Once granted, you will be given a client ID that you will need to use for this integration.
  • Access Token: Please follow the instructions here to obtain your access token.

**IMPORTANT NOTE: Your Nextdoor access token will expire in a year after it’s been generated. Please mark your calendar to update the token in the MetaRouter integration a year from when the token was generated.*

Getting Started - From Your MetaRouter Account

Adding a Nextdoor - CAPI integration.

From the integration library, add a Nextdoor - CAPI integration. Then, fill out the Connection Parameters:

Connection ParameterDescription
ACCESS_TOKENAccess token that can be generated once approved for API access. Please note this token expires after a year.
CLIENT_IDProvided by Nextdoor upon API access approval.

Adding a Nextdoor Sync

To gather the ndclid value, you must add a Nextdoor sync.

  1. From the Pipelines page, find the pipeline associated with the web property you’d like to add a sync to. Hover over the three dot dropdown and select “Build AJS File.”
  2. In the Identity Syncs section, select the Nextdoor sync.
  3. Fill out the following fields:
    1. Consent Type - We recommend that you consult with your legal team when determining your consent requirements.
    2. Cookie Lifetime (in days) - 7 days default
  4. Scroll down and click the Save and Build File button.
  5. Deploy your AJS file to propagate changes to your web property.

Event Mappings

MetaRouter provides all of the event mappings that Nextdoor CAPI integrations typically require. You may add custom events, parameters or mappings in accordance with Nextdoor’s API documentation.


Global mappings will be applied to all events. If your parameter names do not match the Expected Inputs provided, you will need to overwrite the Inputs provided with your own.

Output KeyDescriptionExpected Input
partner_idString: A unique identifier for the partner.Enrichment - metarouter
String: The client ID associated with your Nextdoor Business account.Enrichment - CLIENT_ID
String: A unique identifier for the event.messageId
Integer: The timestamp of the event in Unix time.receivedAt
String: The source of the action (e.g., app, website).N/A - Expression
String: The URL where the action
String: The click ID from Nextdoor.

*The integration requires at least one or a combination of the following parameters: hashed_email , hashed_phone and / or click_id .
String: The hashed email address of the customer.

*The integration requires at least one or a combination of the following parameters: hashed_email , hashed_phone and / or click_id .

Email is the most preferred identifier by Nextdoor.
N/A - Expression
String: The hashed phone number of the customer. Unhashed phone number format should consist of exactly ten digits, devoid of any special characters or international country codes.

*The integration requires at least one or a combination of the following parameters: hashed_email , hashed_phone and / or click_id .
N/A - Expression
customer.first_nameString: The hashed first name of the customer.N/A - Expression
customer.last_nameString: The hashed last name of the customer.N/A - Expression
customer.date_of_birthString: SHA256 Hash. YYYYMMDD FormatN/A - Expression
customer.street_addressString: SHA256 Hash street address of the customer’s address.N/A - Expression
customer.cityString: The hashed city of the customer's address.N/A - Expression
customer.stateString: The hashed state of the customer's address.N/A - Expression
customer.zip_codeString: The hashed zip code of the customer's address.N/A - Expression
customer.countryString: The hashed country of the customer's address.N/A - Expression

Event Specific

Order Completed

Output KeyDescriptionExpected Input
String: The name of the event (e.g., purchase).Enrichment - purchase
custom.order_idString: The order ID of the
custom.product_contextArray: The context of the products in the order.N/A - Expression
String: The value of the order.N/A - Expression

Required & Recommended Identifiers

These identifiers must be mapped to Nextdoor CAPI in order for successful user matching to occur. Without the minimum required IDs, any events sent to Nextdoor may not be reflected accurately in reporting. For your convenience, required and recommended IDs are mapped as Global parameters to ensure they are added to every event.

AttributeExampleSync Injector Required?
SHA256 Hash (Lowercase): c624921e8d93d491b8b47cb1129d8d9d90b9b9a6e10a8db526b22a709cc0e280No
SHA256 Hash: 836c1b0b1f3ef6c1c41b67c5c0a05640d5d5e1bcd0339e919c2f1b8a3e54e8f2No
SHA256 Hash (Lowercase): d53c6d34a40e51011d558ba0cfb46c01ba354baab6587b1b8e7dbaaa5351edc3No
SHA256 Hash (Lowercase): d0b56f57fa2a8f02bcb573ad81b786cd3f1b21f004f121ac350b2ecf0d7c63b3No
SHA256 Hash (YYYYMMDD Format): f3b5a5e2c17ad4970cc8d7fc3e4c0f937a8f2a5789ad56b3a7803e48756c20d1No
SHA256 Hash: 8f8fe511c7a6d5730f6fabb20253f4d2f481b604f9b39d6fc71acb46f8b5f44cNo
SHA256 Hash (Lowercase, no spaces or special characters): 5e498e48f1dc30ad9f5e07ec3f0a20d21b4e8bcd7073dd0a8ec17d4b8baba17bNo
SHA256 Hash (Lowercase two-letter ANSI abbreviation): a58f8e32e677139663be8d3b92fc6c9ff1a098f4d3d3768dc542e6e846a237f0No
SHA256 Hash (First 5 digits for U.S. zip codes): 5e884898da28047151d0e56f8dc6292773603b3c2d5dc6e40b4cc5d1dcb9f33eNo
SHA256 Hash (Lowercase 2-letter ISO 3166-1 alpha-2 code): b5d4045c7de9afba8c32d0b0b44cd3ba174bff6f0062d6c1e4f7ab27c43d817dNo

*The integration requires at least one or a combination of the following parameters: hashed_email , hashed_phone and / or click_id . Email is the most preferred identifier by Nextdoor.

Additional Identifiers

These identifiers should be mapped to Nextdoor CAPI whenever possible to ensure the highest user match rates possible. If using these identifiers, they must be added as Global or Event Specific mappings.

client_ip_addressMust be a valid IPV4 or IPV6 address.Example IPV4: Example IPV6: 2001:0db8:85a3:0000:0000:8a2e:0370:7334

Additional Nextdoor CAPI Documentation