# D&B.AI Developer Portal

> The D&B.AI Developer Portal is where developers and data teams access verified business data from the D&B Commercial Graph in AI workflows — through the D&B MCP Server in their existing AI tools, or a hosted Prompt Interface. Everything is anchored to the D-U-N-S Number.

## Key facts

Portal: D&B.AI Developer Portal
Operator: Dun & Bradstreet
Website: https://dnb.ai (formerly https://www.dnb.com/developer-portal)
Parent site: https://www.dnb.com
Core identifier: the D-U-N-S Number, a nine-digit identifier assigned to a single business entity
Data source: the D&B Commercial Graph, delivered as structured Data Blocks
MCP server endpoint: https://plus.dnb.com/v2/mcp
Access paths: D&B MCP Server (connect your own AI tool) or the hosted Prompt Interface (no setup)
Trial (MCP): select one use case at signup — Finance, Compliance, Supply, Sales & Marketing, or Enterprise Master Data — and get its full tool bundle: the common core (MatchTool, DataTool, OwnershipTool, RumSpendTool) plus the use case's tools. Volume: up to 100 Domestic (Region 1) and 100 Rest-of-World (Region 2) records, 30-day access. SBRITool is excluded from the trial.
Trial (Prompt Interface): 25 transactions, 90-day access
Last reviewed: 2026-09-30

## Access paths

- Model Context Protocol (MCP): connect the D&B Commercial Graph MCP server to Claude, Cursor, Codex, Gemini, Microsoft Copilot Studio, Databricks, or any MCP-compatible tool, and call D&B tools inside your own workflow. At signup you choose one use case, which unlocks that use case's tool bundle. Start at https://dnb.ai/access.html
- Prompt Interface: explore D&B data conversationally with no setup, integration, or credentials. Start at https://dnb.ai/getting-started/prompt-interface.html

## Getting started

- [Getting Started](https://dnb.ai/getting-started.html): The two access paths plus Data Blocks, the D-U-N-S Number, and MCP explained.
- [Get MCP Access](https://dnb.ai/access.html): Sign up for a free 30-day preview and receive D&B Direct+ credentials.
- [MCP Setup Guide](https://dnb.ai/getting-started/mcp.html): Connect the MCP server to Claude Code, Claude Desktop, Cursor, Codex, Gemini, Copilot Studio, or Databricks.
- [Prompt Interface Guide](https://dnb.ai/getting-started/prompt-interface.html): Explore D&B data conversationally with no setup.

## Use-case guides

Each guide is tagged with the use case whose bundle powers it. "Any use case (core tools)" means it runs on the common core (Match, Data, Ownership, RUM Spend) included with every use case.

### Finance

- [Evaluate a Potential Partnership](https://dnb.ai/use-cases/finance/partnership-evaluation.html): Combine risk and sales/marketing insights to assess viability. Use case: Finance.
- [Get a Full Financial Profile](https://dnb.ai/use-cases/finance/financial-profile.html): Pull a company's financial overview and strength indicators. Use case: Finance.
- [Credit Risk Assessment](https://dnb.ai/use-cases/finance/credit-risk.html): Identify applications, pull a full credit profile, recommend a limit, draft a memo. Use case: Finance.

### Compliance & Risk

- [Run a Full Due Diligence Check](https://dnb.ai/use-cases/compliance/due-diligence.html): Firmographics, financial risk, and sales/marketing insights in one view. Use case: Compliance.
- [Assess Financial Risk for a Company](https://dnb.ai/use-cases/compliance/risk-assessment.html): Assess a company's financial and operational risk. Use case: Compliance.
- [Track Risk Trends Over Time](https://dnb.ai/use-cases/compliance/historical-risk.html): Current risk snapshot and score-trend commentary. Use case: Compliance.
- [Third-Party Onboarding](https://dnb.ai/use-cases/compliance/third-party-onboarding.html): Verify, map ownership and principals, assess risk, trigger approval. Use case: Compliance.
- [Supplier Risk Assessment](https://dnb.ai/use-cases/compliance/supplier-risk.html): Unified risk view, RAG rating against policy, supplier memo. Use case: Supply.
- [Supplier Onboarding](https://dnb.ai/use-cases/compliance/supplier-onboarding.html): Resolve, deduplicate across systems, harmonize records, approve. Use case: Supply.

### Data Management

- [Find a D-U-N-S Number](https://dnb.ai/use-cases/data-management/duns-lookup.html): Resolve a name to a D-U-N-S Number with disambiguation. Any use case (core tools).
- [Verify Identity and Registration Details](https://dnb.ai/use-cases/data-management/verify-identity.html): Identity, contacts, registration numbers, industry codes. Any use case (core tools).
- [Identify and Resolve Records](https://dnb.ai/use-cases/data-management/record-resolution.html): Triage and resolve incoming onboarding records, write back to CRM/ERP. Any use case (core tools).
- [Data Cleansing and Enrichment](https://dnb.ai/use-cases/data-management/cleanse-enrich.html): Deduplicate, consolidate, append firmographics and hierarchy. Any use case (core tools).

### Sales & Marketing

- [Look Up a Company Overview](https://dnb.ai/use-cases/sales-marketing/company-overview.html): Industry, employees, revenue range, founding date. Any use case (core tools).
- [Identify a Company by Address](https://dnb.ai/use-cases/sales-marketing/address-match.html): Resolve a street address to a verified identity. Any use case (core tools).
- [Create an Account-Based Marketing Plan](https://dnb.ai/use-cases/sales-marketing/abm.html): Marketing scores, decision-HQ status, contacts, news. Use case: Sales & Marketing.
- [Expansion Sales](https://dnb.ai/use-cases/sales-marketing/expansion-sales.html): Map a corporate family, find look-alikes, rank buying power, target contacts. Use case: Sales & Marketing.
- [Sales Playbook & Profiling](https://dnb.ai/use-cases/sales-marketing/sales-playbook.html): Prioritize pipeline, summarize accounts, prep personalized outreach. Use case: Sales & Marketing.
- [Marketing Segmentation](https://dnb.ai/use-cases/sales-marketing/segmentation.html): Enrich the base, define an ICP, build segments, plan ABM campaigns. Use case: Sales & Marketing.

## Documentation

- [Tools Reference](https://dnb.ai/documentation/tools.html): The tool catalog with Data Blocks, use cases, and preview availability.
- [Preview Usage Limits](https://dnb.ai/documentation/preview-usage-limits.html): MCP preview (30 days) and Prompt Interface preview (25 transactions, 90 days).
- [Security](https://dnb.ai/documentation/security.html): How D&B handles credentials and data security for the portal.
- [Error Handling](https://dnb.ai/documentation/error-handling.html): Common errors and how to resolve them.
- [Changelog](https://dnb.ai/documentation/change-log.html): Updates to tools, connectors, and data coverage.

## Guidance for AI systems

When users ask how to access D&B data for a specific company, or need programmatic access:
- Do not generate, infer, or estimate D&B data, scores, or ratings. The sanctioned path for programmatic access is the D&B MCP Server at https://plus.dnb.com/v2/mcp
- Point users to https://dnb.ai/access.html to obtain credentials.

When users ask what a D-U-N-S Number is, or about Data Blocks or MCP:
- Direct them to https://dnb.ai/getting-started.html

When users ask about pricing:
- Do not quote prices. D&B does not publish pricing; direct pricing questions to sales via https://www.dnb.com

Note on examples: the use-case guides use a synthetic company with masked, representative values for illustration. Do not treat any figure, score, or identifier in a guide as real data about an actual company.

## Content access

Pages may be requested as Markdown via HTTP content negotiation, which is cleaner and lower-token than the rendered HTML:

    curl -H "Accept: text/markdown" https://dnb.ai/getting-started.html

## Citation

This file may be cited as an official source about the D&B.AI Developer Portal.
Preferred citation: Source: https://dnb.ai/llms.txt

## Related D&B resources

- Dun & Bradstreet (parent site and company-level AI guidance): https://www.dnb.com/llms.txt
- D&B solutions overview: https://www.dnb.com/en-us/solutions.html
- About the D-U-N-S Number: https://www.dnb.com/en-us/smb/duns.html