- 1. What Can You Do With OnAudience MCP?
- 2. Before You Start: What Do You Need?
- 3. Step-by-Step: How to Connect OnAudience MCP to Claude
- 4. How to Find Ready-Made Audience Segments Using Claude
- 5. How to Create a Custom AI-Modelled Audience in Claude
- 6. How to Choose Between Ready-Made and Custom Audiences
- 7. From Audience Discovery to DSP Activation
- 8. Frequently Asked Questions
- 9. Get Started With OnAudience MCP
Media planners and programmatic buyers spend considerable time translating campaign briefs into audience targeting strategies. Finding relevant segments, comparing audience options, requesting custom audiences and preparing them for DSP activation often involve multiple platforms and manual processes.
OnAudience MCP (Model Context Protocol) makes this process simpler by connecting Claude directly to OnAudience’s audience data and technology.
With access to more than 4,100 ready-made audience segments across 200+ markets, marketers can use Claude to discover relevant audiences, create AI-modelled custom audience proposals, explore audience segments and prepare audience data for activation through major advertising platforms.
Instead of manually browsing audience taxonomies or switching between tools, media teams can describe what they need in natural language and work with OnAudience data directly within Claude.
This guide explains how to connect OnAudience MCP to Claude and use it for audience discovery, custom segment creation and campaign activation.
Connect OnAudience MCP to Claude and Start Building Audiences
1. What Can You Do With OnAudience MCP?
Once connected, OnAudience MCP allows Claude to interact with OnAudience’s audience data and technology layer.
You can use it to:
- Find ready-made audience segments: Search OnAudience’s catalogue of 4,100+ segments using everyday language, campaign objectives or specific consumer interests.
- Create AI-modelled custom audiences: Describe your ideal audience in a campaign brief and initiate the creation of a tailored segment based on available behavioral and demographic signals.
- Explore audience insights: Review available audience characteristics, targeting criteria and estimated reach.
- Prepare segments for DSP activation: Identify suitable advertising platforms and initiate the preparation of selected audiences for activation.
- Get additional support: Involve OnAudience’s Data Solutions team when more advanced modelling or technical assistance is required.
The integration is powered by OnAudience’s proprietary data infrastructure, which analyzes signals across more than 25 billion devices worldwide.
2. Before You Start: What Do You Need?
To use OnAudience MCP with Claude, you need two things:
- An active OnAudience account
Access the OnAudience platform at https://ai.onaudience.com.
If you do not have an account, send a request to create an account at: https://ai.onaudience.com/register
- You will need to provide an email address.
- Name of the DSP/SSP you use
- Add any relevant information
- OnAudience authentication credentials
You will need a dedicated username, typically in the format firstname-lastname, and a password issued by the OnAudience Data Solutions team.
These credentials allow you to authenticate through OnAudience’s Keycloak login system.
Need access? Contact your OnAudience representative or email contact@onaudience.com
You will also need a Claude account with access to custom remote connectors. In managed company workspaces, an administrator may need to enable this functionality.
Bring Audience Data into Your Claude Workflow
3. Step-by-Step: How to Connect OnAudience MCP to Claude
The configuration depends on whether you use an individual Claude account or a company-managed workspace.
Option A: Individual Claude Accounts
Step 1: Open Claude
Go to https://claude.ai and sign in to your account.
Step 2: Find the connector settings
Open Settings → Connectors and look for the option to add a custom connector.
Depending on your Claude interface, this may appear as Add → Custom → Web or through the tools and connectors menu.
Step 3: Add OnAudience MCP
Enter the following configuration:
| Field | Value |
| Name | OnAudience MCP |
| MCP Server URL | https://mcp.ai.onaudience.com/mcp |
| Authentication | Sign in now |
| OAuth Client | Register automatically |
Step 4: Authenticate your account
Follow Claude’s authorization flow. When redirected to the OnAudience Keycloak login page, enter the username and password provided by the OnAudience team.
Approve the connection when prompted.
Step 5: Verify the connection
Return to Claude and check that OnAudience MCP appears among your available connectors.
Open a new conversation and try:
“Using OnAudience MCP, find available audience segments related to electric vehicle buyers in the UK.”
If Claude can retrieve the available segment information, your integration is ready.
Option B: Enterprise or Corporate Claude Accounts
If your organization manages Claude centrally, an administrator may need to configure OnAudience MCP before individual employees can use it.
Step 1: Sign in to the Claude organization administration settings.
Step 2: Open the organization’s connector management area and add a custom web connector.
Step 3: Enter the OnAudience MCP configuration:
- Name: OnAudience MCP
- Server URL: https://mcp.ai.onaudience.com/mcp
- Authentication: Sign in now
- OAuth Client: Register automatically
Step 4: Make the connector available to the appropriate users or teams according to your organization’s settings.
Step 5: Each authorized user connects to OnAudience MCP and signs in with their individual OnAudience credentials.
Once authenticated, team members can begin working with OnAudience audience data directly in Claude.
Working in Claude? Bring OnAudience Data with You.
4. How to Find Ready-Made Audience Segments Using Claude
One of the easiest ways to get started is to search OnAudience’s existing audience catalogue.
With more than 4,100 segments available, you can search for audiences based on interests, consumer behavior, industries or purchase intent without manually navigating the taxonomy.
Step 1: Open a Claude conversation
Make sure OnAudience MCP is enabled and available to the conversation.
Step 2: Describe the audience you want to reach
For example, imagine you are planning a campaign for an electric vehicle brand targeting UK consumers.
Copy this prompt into Claude:
Example prompt:
“Using OnAudience MCP, find ready-made audience segments suitable for an electric vehicle advertising campaign in the UK. Focus on people interested in electric cars, sustainable mobility and automotive purchases. Show the available segment names, IDs and relevance scores.”
Step 3: Review the available segments
Claude can search the OnAudience taxonomy and return matching audiences, including available segment identifiers and relevance information.
Review which segments best match your campaign objectives.
Step 4: Ask Claude to compare your options
Use a follow-up prompt:
“Compare the five most relevant segments for this campaign. Explain the targeting differences, show any available audience insights and estimated reach, and recommend which segments should be prioritized.”
Claude can use the available OnAudience data to help you evaluate the options.
Step 5: Prepare your selected segments for activation
Once you have chosen suitable segments, ask:
“I want to use these audience segments in The Trade Desk. Show me their segment IDs, any available reach estimates and the steps required to activate them.”
Claude can help you identify the relevant segments and determine the next activation steps.
Result: You can move from a campaign idea to a shortlist of relevant, ready-made audience segments without manually searching through the entire taxonomy.
5. How to Create a Custom AI-Modelled Audience in Claude
Not every campaign fits an existing audience category. Sometimes advertisers need a more specific combination of demographics, interests, consumer behavior and purchase intent.
With OnAudience MCP, you can describe your campaign brief directly in Claude and initiate a custom audience creation workflow.
Step 1: Start with your campaign brief
Imagine you are launching a premium skincare brand in the UK and want to reach consumers interested in natural beauty products.
Open Claude with OnAudience MCP enabled.
Step 2: Ask Claude to create a custom audience
Copy this prompt:
Example prompt:
“Using OnAudience MCP, prepare a custom AI-modelled audience for a premium skincare campaign in the UK.
Our target audience is women aged 25–45 who show interest in natural skincare, organic cosmetics, premium beauty products and high-quality skincare brands.
Identify relevant demographic and behavioral signals, propose the audience definition and show any available estimated reach across supported advertising platforms.”
Step 3: Review the proposed audience
Claude can use OnAudience’s available modelling capabilities via AI Audiences to interpret your brief and prepare an audience proposal.
Depending on the available information, the response may include:
- Proposed audience definition and targeting criteria.
- Relevant demographic and behavioral signals.
- Available audience insights.
- Estimated reach across supported platforms.
- Recommendations for refining the audience.
Step 4: Refine your audience
You can continue the conversation to make your targeting more specific.
For example:
“Refine this audience to prioritize consumers demonstrating stronger purchase intent for premium skincare products. Explain which targeting signals would be most relevant and how the refined audience differs from the original proposal.”
This allows you to improve your audience brief before initiating creation.
Step 5: Request custom segment creation
Once you are satisfied with the proposed audience, tell Claude:
“Use OnAudience MCP to initiate the creation of this custom audience based on the approved brief. Show me any information required to complete the request and confirm whether the creation request has been submitted.”
Review any confirmation or additional information requested by the integration.
Some custom audience requests may require further modelling or assistance from OnAudience’s Data Solutions team.
Step 6: Prepare the audience for your DSP
Finally, specify where you want to activate the audience.
For example:
“Prepare this custom audience for activation in DV360. Show the available reach estimate, required activation details and expected delivery timeline.”
OnAudience supports audience distribution through major advertising platforms, including The Trade Desk, Amazon DSP, DV360, PubMatic, Equativ and LiveRamp.
Custom audience activation typically takes 24 hours, depending on the campaign requirements and destination platform.
The important distinction is that Claude helps initiate and coordinate the audience workflow. Final segment delivery and availability in the selected platform depend on the relevant OnAudience activation process.
Turn Your Campaign Brief into an Actionable Audience
6. How to Choose Between Ready-Made and Custom Audiences
You do not need to decide which type of audience to use before starting your conversation with Claude.
You can ask it to explore both options.
For example:
“I’m planning a campaign for a premium travel brand targeting affluent travelers in Germany. Search OnAudience’s existing audience segments and assess whether they meet the brief. If the available segments are too broad, propose a custom AI-modelled audience with more specific targeting criteria.”
This approach allows media planners to evaluate existing audience options before requesting additional custom modelling.
| Ready-made segments | Custom AI-modelled segments |
| Selected from 4,100+ existing segments | Created around a specific campaign brief |
| Suitable for established targeting categories | Suitable for more specific audience requirements |
| Existing segment IDs can be retrieved | New audience creation may be required |
| Activation depends on platform availability | Bespoke activation typically takes 24 hours |
Both approaches can be explored through the same Claude conversation.
7. From Audience Discovery to DSP Activation
The full process can now begin with a single campaign brief.
Step 1 — Describe your campaign. Tell Claude about your target market, product, campaign objectives and ideal customers.
Step 2 — Explore existing audiences. Ask Claude to search OnAudience’s taxonomy and recommend suitable ready-made segments.
Step 3 — Request custom modelling if needed. If existing segments do not fully match your requirements, ask Claude to prepare an AI-modelled custom audience.
Step 4 — Evaluate your options. Review available audience insights, targeting criteria and estimated reach.
Step 5 — Choose your advertising platform. Specify the DSP or supported activation destination where you want to use the audience.
Step 6 — Initiate activation preparation. Ask Claude to provide the relevant segment IDs or initiate the supported custom audience preparation workflow. Complete any required OnAudience or platform-specific activation steps.
Step 7 — Verify audience availability. Confirm that the selected segment has been delivered and is available in your advertising platform before launching the campaign.
This workflow reduces the manual work between campaign planning, audience selection and activation preparation while keeping media teams in control of their targeting decisions.
8. Frequently Asked Questions
Do I need an OnAudience account to use MCP?
Yes. You need an active OnAudience account and authentication credentials provided by the OnAudience team.
Do I need technical knowledge to use OnAudience MCP?
No programming is required for everyday audience searches or custom audience requests. Initial connector setup may require administrative permissions, depending on your Claude account.
Can I create a custom audience directly in Claude?
Yes. You can describe your campaign brief, review the proposed audience and initiate custom segment creation through the available OnAudience MCP workflow. Additional modelling or delivery steps may involve the OnAudience team.
Can I use existing OnAudience segments instead of creating new ones?
Yes. You can search more than 4,100 ready-made audience segments and retrieve relevant segment information for campaign planning.
Can Claude activate an audience directly in my DSP?
Claude can help identify audiences, retrieve available segment information and initiate supported activation preparation workflows. Final activation depends on the selected advertising platform, the audience’s availability and any required delivery steps.
How long does custom audience activation take?
Bespoke audience activation typically takes 24–72 hours, depending on campaign requirements and the destination platform.
Is there an additional OnAudience SaaS subscription fee for MCP?
OnAudience offers the MCP connection without an additional OnAudience SaaS subscription fee. Applicable Claude account costs and audience data or activation commercial terms are separate considerations.
9. Get Started With OnAudience MCP
OnAudience MCP brings audience discovery, AI-modelled custom audience creation and activation preparation into the same conversational workflow.
Instead of moving between multiple platforms to translate a campaign brief into an audience strategy, media teams can use Claude to interact with OnAudience’s proprietary data and technology directly.
25B+ devices. 4,100+ ready-made segments. 200+ markets. One conversation.
Ready to connect?
- Get your OnAudience account and authentication credentials.
- Add https://mcp.ai.onaudience.com/mcp as a custom connector in Claude.
- Start exploring ready-made segments or creating custom audiences using natural-language prompts.
Need access or technical support?
Contact hello@onaudience.com to request credentials, arrange onboarding or discuss your audience requirements.
Connect OnAudience MCP to Claude and Start Building Audiences
