TOP APIs for Background Checks & Due Diligence (2025)

Why APIs Are a Game-Changer for Background Checks & Due Diligence

In 2025, as companies operate in increasingly complex and regulated environments, traditional, manual methods for screening individuals and organizations just don’t cut it.

• Widespread adoption: Background screening has become standard practice — 95% of employers conduct at least one type of background check, and 94% of them include criminal history checks (Consumer Financial Protection Bureau, 2024).
• Rising digital risks: Over 55% of resumes contain false or exaggerated claims, and 76% of companies encounter repeated dishonesty in references alone (PSI Background Check Report, 2024).
• Efficiency as a priority: AI-powered verification platforms have reduced average screening times by up to 40% (Fortune Business Insights, 2024).

These challenges demand scale and reliability. Manual checks are too slow, and incomplete data introduces risks such as fraud, compliance violations, or reputational damage.

Enter Background Check & Due Diligence APIs: they provide fast, structured access to intelligence across personal, professional, and digital domains — boosting scalability, accuracy, and compliance all at once.

What APIs Provide & Why They Matter

A Background Check API acts as a bridge between raw, fragmented data sources and automated, enterprise-ready screening workflows. Through a single integration, businesses can query identifiers like emails, phone numbers, social profiles, or company names to uncover:

• Personal records and professional history.
• Social media presence and connections.
• Financial and crypto activity.
• Corporate affiliations and networks.
• Dark Web exposure and security risks.

This structured approach turns weeks of manual verification into minutes of automated analysis — at scale.

Where APIs Are Used in Background Checks & Due Diligence

Background Check & Due Diligence APIs power critical functions across industries:

• KYC & AML compliance – verifying identities, uncovering risk factors, and monitoring against sanctions.
• Corporate Due Diligence – screening potential partners, acquisitions, and third-party vendors.
• Fraud Prevention – detecting synthetic identities, fake accounts, and financial fraud.
• HR & Recruitment – validating credentials, experience, and online presence.
• Cybersecurity & OSINT – linking digital footprints, darknet exposure, and attribution.

Key Criteria for Choosing a Background Check API

When selecting the right solution, businesses should weigh:

1. Coverage of sources – Does the API include social media, messengers, financial, and Dark Web intelligence?
2. Types of data – Structured vs. unstructured; people, companies, financial, or behavioral data.
3. Integration – API flexibility and documentation quality.
4. Compliance – Alignment with GDPR, CCPA, and local data protection rules.
5. Scalability – Ability to handle high-volume, enterprise-level requests.

TOP APIs for Background Checks & Due Diligence

Social Links API

• Sources: 500+ including LinkedIn, Facebook, Instagram, Telegram, WhatsApp, Discord, Reddit, GitHub, and Dark Web.
• Input data types: Email, phone, IP, alias, name, photo, company, crypto wallet, domain, password, geolocation, profiles, posts, and more.
• Advantages: Broadest coverage in the market, including messengers and Dark Web; granular intelligence; detailed documentation; enterprise support.
• Disadvantages: Premium pricing; requires OSINT understanding for best results.
• Use cases: Due Diligence & Background Checks, KYC/AML, fraud prevention, corporate compliance, investigations.

👉 Explore how Social Links API transforms background checks into scalable intelligence workflows.

People Data Labs API

• Sources: Social networks only.
• Inputs: Name, email, phone, address, date of birth, company, profile link.
• Advantages: Huge static dataset, accurate enrichment, batch queries.
• Disadvantages: Not real-time; outdated for high-risk investigations.
• Use cases: HR tech, B2B lead gen, due diligence, enrichment.

Proxycurl (Nubela) API

• Sources: Limited social platforms (no messengers).
• Inputs: Personal info, company, email.
• Advantages: Strong LinkedIn coverage.
• Disadvantages: Narrow scope, weak docs, not suitable for compliance-heavy use.
• Use cases: HR sourcing, due diligence, enrichment.

Epieos API

• Sources: Indirect — focuses on finding social profiles from phone/email.
• Inputs: Phone numbers, emails.
• Advantages: High match rates; simple setup.
• Disadvantages: Limited depth, no direct access to activity or content.
• Use cases: Basic background checks, KYC, lightweight investigations.

Data365 API

• Sources: LinkedIn, Facebook, Instagram, Twitter, TikTok, Reddit.
• Inputs: Profiles, names, content.
• Advantages: Clear documentation.
• Disadvantages: Shallow analytics; no enrichment from phone/email.
• Use cases: Due diligence, compliance, background checks.

Pipl API

• Sources: People search, social profiles, public records.
• Inputs: Email, phone, username.
• Advantages: Well-known for identity resolution.
• Disadvantages: Limited coverage compared to enterprise OSINT providers.
• Use cases: Due diligence, fraud detection, people search.

Comparison Table: Best APIs for Background Checks & Due Diligence (2025)

Conclusion

Background Check & Due Diligence APIs are now essential for companies that need to verify identities, detect fraud, and evaluate risks at scale. From HR hiring pipelines to financial compliance and corporate M&A checks, APIs streamline workflows while ensuring accuracy and compliance.

The choice depends on scope, data depth, and regulatory alignment.

For organizations that require the widest coverage across social networks, messengers, and the Dark Web, with enterprise-ready support and documentation, Social Links API is the standout solution in 2025.

👉 Ready to scale your due diligence and background checks? Book a free demo.