Reply.io

Reply.io is a sales engagement platform for multichannel outreach, combining email, calls, and social touchpoints with AI-driven sequencing. Nexla connects to the Reply.io v3 REST API so you can ingest AI insights, knowledge bases, and reply handlers, and push updates back into your Reply.io workspace.

Power end-to-end data operations for your Reply.io API with Nexla. Our bi-directional Reply.io connector is purpose-built for Reply.io, making it simple to ingest data, sync it across systems, and deliver it anywhere — all with no coding required. Nexla turns API-sourced data into ready-to-use, reusable data products and makes it easy to send data to Reply.io or any other destination. With comprehensive monitoring, lineage tracking, and access controls, Nexla keeps your Reply.io workflows fast, secure, and fully governed.

Features

Type: API

SourceDestination

• Seamless API Integration: Connect to any endpoint as source or destination without coding, with automatic data product creation
• Visual Composition & Chaining: Build complex integrations using visual templates, chain API calls, and compose workflows with data validation and filtering
• API Proxy: Expose curated slices of your data securely with a secure and customizable API proxy that validates and transforms data on the fly
• Request optimization with intelligent batching, retry, and caching to minimize API calls and costs

Prerequisites

Before creating a Reply.io credential, you need an API key from your Reply.io account. Reply.io's v3 API uses bearer token authentication: your API key is sent in the Authorization header as Bearer <your-api-key> on every request.

To obtain your Reply.io API key, follow these steps:

1. Sign in to your Reply.io account.

2. Open Settings from your account menu.

3. Locate the API Key section and copy the API key shown there. This single key authenticates all API requests for your account.

4. Store the API key securely, as you will need it to configure your Nexla credential. Treat the key as sensitive information — anyone with the key can access your Reply.io data.

Reply.io applies per-account rate limits to API requests (by default, 100 requests per minute and 3,000 requests per hour). If your API key is compromised, regenerate it from the same Settings > API Key section to revoke the old key. For detailed information about authentication, endpoints, and response formats, see the Reply.io API Documentation.

Authenticate

Credentials required

Field	Required	Secret	Description
API Key Value	Yes	Yes	An encoded string value used as a secret token to authenticate API requests

Create a credential in Nexla

1. After selecting the data source/destination type, click the Add Credential tile to open the Add New Credential overlay.

2. Enter a name for the credential in the Credential Name field and a short, meaningful description in the Credential Description field.

3. Enter your Reply.io API key in the API Key Value field. This is the API key you copied from Settings > API Key in Prerequisites. Nexla sends this value in the Authorization header as a bearer token on every request to the Reply.io API.

   Your API key grants access to your Reply.io account data and should be kept confidential. If the key is compromised, regenerate it from Settings > API Key in your Reply.io account to revoke the old key.

   For detailed information about authentication, available endpoints, and response formats, see the Reply.io API Documentation.

4. Click the Save button at the bottom of the overlay. The newly added credential will now appear in a tile on the Authenticate screen during data source/destination creation.

Use as a data source

To create a new data flow, navigate to the Integrate section, and click the New Data Flow button. Select the Reply.io connector tile, then select the credential that will be used to connect to the Reply.io instance, and click Next; or, create a new Reply.io credential for use in this flow.

Endpoint templates

Nexla provides pre-built templates that can be used to rapidly configure data sources to ingest data from common Reply.io endpoints. Select the endpoint from which this source will fetch data from the Endpoint pulldown menu. Available endpoint templates are listed in the expandable boxes below.

[Rest API] Get AI insights for a contact

Get AI insights for a contact.

• This endpoint retrieves AI-generated insights for a specific contact within a sequence. Provide the sequence ID and contact ID to identify the contact whose insights should be fetched.

[Rest API] Industries typeahead

Industries typeahead.

• This endpoint returns a typeahead list of industries used for intent signals. Use the optional top, skip, and search parameters to page through and filter the results.

[Rest API] Technologies typeahead

Technologies typeahead.

• This endpoint returns a typeahead list of technologies used for intent signals. Use the optional top, skip, and search parameters to page through and filter the results.

[Rest API] List knowledge bases

List knowledge bases.

• This endpoint retrieves the knowledge bases in your Reply.io account. Use the optional top, skip, and search parameters to page through and filter the results.

[Rest API] Get a knowledge base

Get a knowledge base.

• This endpoint retrieves a single knowledge base by its ID. Provide the knowledge base ID to fetch its details.

[Rest API] List links

List links.

• This endpoint retrieves the links associated with a knowledge base. Provide the knowledge base ID, and use the optional top, skip, and search parameters to page through and filter the results.

[Rest API] List documents

List documents.

• This endpoint retrieves the documents associated with a knowledge base. Provide the knowledge base ID, and use the optional top, skip, and search parameters to page through and filter the results.

[Rest API] List reply handlers

List reply handlers.

• This endpoint retrieves the reply handlers associated with a knowledge base. Provide the knowledge base ID, and use the optional top, skip, and search parameters to page through and filter the results.

[Rest API] Create a reply handler

Create a reply handler.

• This endpoint creates a reply handler under a knowledge base and returns the created resource. Provide the knowledge base ID along with the reply handler configuration, such as the question type, instructions, sample answer, tone of voice, response length, links, and auto-send setting.

[Rest API] Get a reply handler

Get a reply handler.

• This endpoint retrieves a single reply handler by its ID. Provide the knowledge base ID and the reply handler ID to fetch its details.

Once the selected endpoint template has been configured, click the Test button to the right of the endpoint selection menu to retrieve a sample of the data that will be fetched. Sample data will be displayed in the Endpoint Test Result panel on the right, allowing you to verify that the source is configured correctly before saving.

Manual configuration

Reply.io data sources can also be manually configured to ingest data from any valid Reply.io API endpoint, including endpoints not covered by the pre-built templates, chained API calls, or custom request parameters. Select the Advanced tab at the top of the configuration screen, and follow the instructions in Connect to Any API to configure the API method, endpoint URL, date/time and lookup macros, path to data, metadata, and request headers.

Once all of the relevant settings have been configured, click the Create button in the upper right corner of the screen to save and create the new Reply.io data source. Nexla will now begin ingesting data from the configured endpoint and will organize any data that it finds into one or more Nexsets.

Use as a destination

Click the + icon on the Nexset that will be sent to the Reply.io destination, and select the Send to Destination option from the menu. Select the Reply.io connector from the list of available destination connectors, then select the credential that will be used to connect to the Reply.io account, and click Next; or, create a new Reply.io credential for use in this flow.

Endpoint templates

Nexla provides pre-built templates that can be used to rapidly configure destinations to send data to common Reply.io endpoints. Select the endpoint to which data will be sent from the Endpoint pulldown menu. Then, click on the template in the list below to expand it, and follow the instructions to configure additional endpoint settings.

[Rest API] Create a knowledge base

Create a knowledge base.

• This endpoint sends each record from your Nexset as a JSON request body to create a new knowledge base in your Reply.io account.

[Rest API] Update a knowledge base

Update a knowledge base.

• This endpoint updates an existing knowledge base identified by its ID, sending each Nexset record as a JSON request body with the fields to change.

[Rest API] Delete a knowledge base

Delete a knowledge base.

• This endpoint deletes a knowledge base identified by its ID. Provide the knowledge base ID for each record you want to remove.

[Rest API] Duplicate a knowledge base

Duplicate a knowledge base.

• This endpoint creates a copy of an existing knowledge base identified by its ID. Provide the knowledge base ID for each record you want to duplicate.

[Rest API] Add a link

Add a link.

• This endpoint adds a link to a knowledge base identified by its ID, sending each Nexset record as a JSON request body with the link details.

[Rest API] Delete a link

Delete a link.

• This endpoint deletes a link from a knowledge base. Provide the knowledge base ID and the link ID for each record you want to remove.

[Rest API] Upload a document

Upload a document.

• This endpoint uploads a document to a knowledge base identified by its ID, sending each Nexset record as a JSON request body with the document details.

[Rest API] Delete a document

Delete a document.

• This endpoint deletes a document from a knowledge base. Provide the knowledge base ID and the document ID for each record you want to remove.

[Rest API] Delete a reply handler

Delete a reply handler.

• This endpoint deletes a reply handler from a knowledge base. Provide the knowledge base ID and the reply handler ID for each record you want to remove.

[Rest API] Upload reply handler media

Upload reply handler media.

• This endpoint uploads media for a reply handler. Provide the knowledge base ID and the reply handler ID, sending each Nexset record as a JSON request body with the media details.

Manual configuration

Reply.io destinations can also be manually configured to send data to any valid Reply.io API endpoint. Select the Advanced tab at the top of the configuration screen, and follow the instructions in Connect to Any API to configure the API method, data format, endpoint URL, request headers, attribute exclusions, record batching, and response webhooks.

Reply.io APIs expect JSON format for most operations. For update or delete operations, include the ID of the object to be modified in the endpoint URL.

Save & activate

Once all endpoint settings have been configured, click the Done button in the upper right corner of the screen to save and create the destination. To send the data to the configured Reply.io endpoint, open the destination resource menu, and select Activate.

The Nexset data will not be sent to the Reply.io endpoint until the destination is activated. Destinations can be activated immediately or at a later time, providing full control over data movement.