Connect agents to Microsoft Fabric with Fabric IQ (preview)

Learn how to connect your Microsoft Foundry agent to Fabric IQ, a Microsoft Fabric workload that unifies business data through an enterprise ontology and AI agents so your agents can reason over your data in shared semantic context.

Items marked (preview) in this article are currently in public preview. This preview is provided without a service-level agreement, and we don’t recommend it for production workloads. Certain features might not be supported or might have constrained capabilities. For more information, see Supplemental Terms of Use for Microsoft Azure Previews.

When you connect to Fabric IQ, you may incur costs and data may be sent outside the Azure compliance boundary and processed according to the applicable service terms and data handling policies. It is your responsibility to manage whether your data will flow outside of your organization’s compliance and geographic boundaries and any related implications, and that appropriate permissions, boundaries, and approvals are provisioned.

You’re responsible for carefully reviewing and testing applications you build in the context of your specific use cases and making all appropriate decisions and customizations. This includes implementing your own responsible AI mitigations, such as metaprompts, content filters, or other safety systems, and ensuring your applications meet appropriate quality, reliability, security, and trustworthiness standards. See the Foundry Agent Service transparency note.

For information on optimizing tool usage, see best practices.

Fabric IQ (preview) is a Microsoft Fabric workload that unifies data across OneLake and organizes it according to the language of your business. It exposes that data to analytics, AI agents, and applications with consistent semantic meaning through its core items: the ontology (preview), which defines your enterprise vocabulary as entity types (such as Customer, Order, and Product), their properties, relationships, and data bindings to OneLake sources (lakehouses, eventhouses, and Power BI semantic models); the Fabric data agent, which enables conversational Q&A over ontology-grounded data; Power BI semantic models, which provide curated analytics with measures and hierarchies. The ontology includes a Natural Language to Ontology (NL2Ontology) layer that converts natural-language questions into structured queries, so agents can ask questions using business terms instead of table names or query syntax.

When you connect your Foundry agent to Fabric IQ by registering it as a server-side tool, your agent can delegate natural-language tasks to the Fabric IQ workload—for example, “Which customers placed orders above $10,000 last quarter?” Fabric IQ handles data retrieval, ontology-grounded reasoning, and response synthesis, then returns the result to your agent. All requests run in the context of the signed-in user, honor Fabric permissions and governance policies, and remain within the Microsoft Fabric trust boundary.

Usage support

Microsoft Foundry support	Python SDK	C# SDK	JavaScript SDK	Java SDK	REST API	Basic agent setup	Standard agent setup
Fabric IQ	✔️	✔️	✔️	—	✔️	✔️	✔️

Prerequisites

Virtual network (VNet) integration is not supported. Your Foundry project must not use a VNet-restricted endpoint.

Fabric IQ isn’t available in regions where Power BI is the only Fabric workload. Confirm your Fabric workspace is in a region that supports the full Fabric stack — see Microsoft Fabric region availability.

Before you begin, make sure you have:

• A Microsoft Fabric license that grants access to the Fabric items your agent queries. Users who invoke Fabric IQ through your agent must also have this license.
• An active Microsoft Foundry project with a deployed model.
• Azure RBAC roles:
  • Foundry User role on the Foundry project for the developer identity, the agent’s runtime identity, and any user identity involved in OAuth flows.
  • Foundry Project Manager role on the Foundry project for creating a Foundry connection to the Fabric IQ endpoint.
• Foundry Toolkit: Install Visual Studio Code and Foundry Toolkit for Visual Studio Code.

How it works

1. Your agent dispatches a tool call — When the agent model identifies a task that requires Fabric data, it emits a tool call to the fabric_iq_preview tool.
2. Fabric IQ processes the request — Fabric IQ receives the natural-language query and routes it based on the target item type:
   • Ontology — The Natural Language to Ontology (NL2Ontology) layer converts the query into a structured ontology query against your enterprise entities, relationships, and data bindings.
   • Fabric data agent — The query goes directly to the data agent for conversational Q&A over ontology-grounded data.
   • Power BI semantic models — Fabric IQ queries the semantic model’s measures and hierarchies to return analytics results.
3. The result is returned to your agent — Fabric IQ returns the synthesized response. Your agent incorporates it into its reply to the user. All requests run in the context of the signed-in user and honor Fabric permissions and governance policies.

Connect to Fabric IQ

Find your Fabric IQ server details

Fabric IQ exposes different MCP endpoint URLs depending on the type of Fabric item you’re connecting to. The value you supply as server_url follows one of these patterns:

Fabric item type	server_url pattern	Supported authentication
Power BI semantic model	https://{host}/v1/mcp/fabricaihub/integrations/m365	BYO Entra app, managed OAuth
Ontology	https://{host}/v1/mcp/dataPlane/workspaces/{workspaceId}/items/{itemId}/ontologyEndpoint	BYO Entra app
Data agent	https://{host}/v1/mcp/workspaces/{workspaceId}/dataagents/{dataAgentId}/agent	BYO Entra app, managed OAuth

Replace the placeholders as follows:

• {host} — The Fabric API host, typically api.fabric.microsoft.com
• {workspaceId} — The GUID of your Microsoft Fabric workspace
• {itemId} / {dataAgentId} — The GUID of the specific Fabric item

You can find the workspace and item GUIDs in the Microsoft Fabric portal: open your workspace, select the item, and copy the IDs from the browser URL.

For Power BI semantic models, we highly recommend using the latest models such as gpt-5.4 or opus 4.7. Semantic model queries involve complex measure and hierarchy reasoning that benefits significantly from the improved reasoning capability of newer models.

For Power BI semantic models, we recommend restricting the tool surface with allowed_tools so the agent reasons over the schema and runs queries directly instead of pre-generating DAX. Set allowed_tools to:

• GetInstructions
• DiscoverArtifacts
• GetReportMetadata
• GetSemanticModelSchema
• ExecuteQuery
• ValueSearch

Omit GenerateQuery. This list lets the agent discover artifacts, inspect the semantic model schema, execute queries, and search for values, without an intermediate query-generation step.

For server_label, use any short lowercase identifier with hyphens, for example fabriciq-ontology. This label appears in approval prompts when the model calls the tool.

Add the Fabric IQ tool to your agent

Authentication and security

Fabric IQ uses Microsoft Entra ID delegated authentication (On-Behalf-Of, OBO). All requests run in the context of the signed-in user. Application-only (app-only) authentication isn’t supported. Microsoft Fabric permissions and data governance policies are enforced automatically — Fabric IQ can never surface data that the signed-in user isn’t already permitted to see.

The authentication method available depends on the Fabric item type:

• Ontology — BYO Entra app only. You must register a dedicated Entra application with Power BI delegated permissions.
• Data agent — BYO Entra app (with data agent scopes) or managed OAuth.
• Power BI semantic model — BYO Entra app or managed OAuth.

Set up your Entra app for ontology (one-time, per organization)

An Entra admin must complete the following steps before you can create a Fabric IQ connection for an ontology item in Foundry.

Create the app registration

1. Go to the Microsoft Entra admin center. In the left navigation, select Entra ID > App registrations.
2. Select New registration. Give the app a descriptive name and set Supported account types to Accounts in this organizational directory only. Select Register.
3. Copy the Application (client) ID. You need this value when creating the Foundry connection.
4. Select API permissions > Add a permission > Microsoft APIs. Find and select Power BI Service, select Delegated permissions, and add the following permissions:
   • Item.Execute.All
   • Item.Read.All

Select Add permissions.

1. Select Grant admin consent for {your-organization} in the Configured permissions panel. A Global Administrator must approve. This step allows users in your organization to authenticate through the Fabric IQ connection.
2. Select Certificates & secrets > New client secret. Add a description and expiration. Select Add, then immediately copy the secret Value — it’s only shown once.
3. Copy your Directory (tenant) ID from the Microsoft Entra ID overview page.

Fill in the Foundry connection values

In Microsoft Foundry, open your project and go to Settings > Connections > New connection > Fabric IQ. Fill in the following fields:

Field	Value
Client ID	Application (client) ID from step 3
Client secret	Client secret value from step 6
Authorization URL	https://login.microsoftonline.com/{tenant-id}/oauth2/v2.0/authorize
Token URL	https://login.microsoftonline.com/{tenant-id}/oauth2/v2.0/token
Refresh URL	https://login.microsoftonline.com/{tenant-id}/oauth2/v2.0/token
Scopes	https://analysis.windows.net/powerbi/api/Item.Execute.All,https://analysis.windows.net/powerbi/api/Item.Read.All,offline_access

Replace {tenant-id} with your Directory (tenant) ID from step 7. Select Save to create the connection.

For data agent connections using BYO Entra, use the DataAgent.Execute.All delegated permission instead of the Power BI scopes listed above. Add https://analysis.windows.net/powerbi/api/DataAgent.Execute.All as the scope in the Foundry connection, and grant admin consent for that permission in your app registration.

Add the redirect URI to your app registration

After Foundry creates the connection, it displays an OAuth redirect URL. Add this URL to your app registration:

1. In the Microsoft Entra admin center, go to Entra ID > App registrations and select your app.
2. Select Authentication > Add a platform > Web.
3. Under Redirect URIs, paste the OAuth redirect URL from Foundry.
4. Select Configure.

Data governance and compliance

Fabric IQ processes requests within the Microsoft Fabric compliance boundary for your workspace’s region. The following commitments apply when you route agent queries through Fabric IQ.

Data residency

Fabric IQ retrieves and processes data within the region where your Microsoft Fabric workspace resides. Data doesn’t cross regional boundaries during query execution. The applicable region and its compliance scope are determined by your workspace location — see Microsoft Fabric region availability for the list of supported regions and the compliance frameworks each region satisfies.

If your Foundry project is in a different Azure region than your Fabric workspace, query results are returned cross-region. Review Microsoft Fabric region availability and your organization’s data residency requirements before connecting a Fabric workspace in a different region.

Compliance certifications

Fabric IQ inherits Microsoft Fabric’s compliance certifications for the workspace region. For compliance documentation, audit reports, and the frameworks applicable to each region, see Microsoft Fabric region availability.

Admin management

Grant admin consent

A Global Administrator must grant tenant-wide admin consent for the Entra app registration before users can authenticate with the Fabric IQ connection:

1. In the Microsoft Entra admin center, go to Entra ID > App registrations and select your app.
2. Select API permissions.
3. Select Grant admin consent for {your-organization} and approve. Each listed permission shows a green checkmark when consent is granted.

DataAgent.Execute.All also requires admin consent. If you use this permission for data agent connections, follow the same process.

Restrict network access

To restrict agent traffic to your private network, configure Foundry Agent Service with a virtual network. See Private networking for agents for setup instructions.

Publish Fabric items before use

A Fabric admin must publish each Fabric item — ontology, data agent, or Power BI semantic model — before it can be consumed through Fabric IQ. Unpublished items aren’t reachable at the MCP endpoint, and requests against them fail. Confirm that the item is published in the Microsoft Fabric portal before configuring the Foundry connection.

Troubleshoot

Symptom	Likely cause	Fix
404 or Not Found error when connecting	The server_url is incorrect or the Fabric item isn’t published.	Verify the workspace and item GUIDs in the Fabric portal URL. Confirm the item is published.
401 Unauthorized	Admin consent hasn’t been granted or the Entra app is misconfigured.	Verify admin consent was granted for all required API permissions. Check that the client ID, secret, and scopes match what you configured in Foundry.
CONSENT_REQUIRED error at runtime	The signed-in user hasn’t completed the OAuth flow for the connection.	Open the consent URL returned in the error, complete the OAuth flow in a browser, then retry.
Empty or incorrect results from ontology queries	Ontology entities, properties, or data bindings are incomplete.	Verify the ontology item is published and that entity types, properties, and data bindings are fully configured in Fabric IQ.
Poor-quality answers from Power BI semantic models	The model doesn’t have strong enough reasoning for complex measure queries.	Use a latest-generation model such as gpt-5.4 or opus 4.7. These models handle semantic model complexity significantly better than older models.
Agent never calls the Fabric IQ tool	The model doesn’t recognize when to delegate to Fabric IQ.	Add guidance in the system prompt, for example: “Use the Fabric IQ tool for any question about business data, entities, metrics, or organizational knowledge.”

Related content

• What is Fabric IQ (preview)?
• What is ontology (preview)?
• Fabric data agent concepts
• Overview of the Power BI MCP servers (preview)
• Tool best practices