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Best Practice | Marketing

MODIFIED ON

02/16/2026

Wiza API: Complete Automation and Data Access Overview

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Best Practice > Marketing
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Wiza’s API transforms a manual LinkedIn prospecting tool into a programmable data pipeline that feeds verified contacts directly into your CRM, sales engagement platform, or custom systems. For teams running high-volume outbound campaigns, the difference between clicking through a Chrome extension and making automated API calls can mean hours saved per week—and significantly faster pipeline growth.

This guide covers how the Wiza API works, what data it returns, its credit and rate limit structure, known limitations, and how it compares to alternatives like ReachStream, Apollo, and ZoomInfo.

What is Wiza and how does the Wiza API work

The Wiza API is a programmatic interface that extracts verified contact data—primarily emails and phone numbers—directly from LinkedIn profiles. Rather than using Wiza’s Chrome extension to prospect one contact at a time, the API lets you connect Wiza’s data-sourcing capabilities directly to your CRM, sales engagement platform, or custom internal tools.

Wiza pulls professional contact information from LinkedIn’s network and runs it through a verification engine. The API then delivers verified data in a structured format ready for outreach campaigns.

Primary function: Extracts and verifies work emails and direct dials from LinkedIn profiles programmatically.
Automation benefit: Eliminates manual copy-paste workflows, enabling teams to process hundreds of prospects without touching the browser extension.
Data source: LinkedIn serves as the foundation, combined with Wiza’s real-time verification to confirm email deliverability before credits are consumed.

The API works well for teams running high-volume outbound campaigns where manual prospecting can’t scale. However, effectiveness depends entirely on LinkedIn data availability—if a prospect has limited LinkedIn information, Wiza’s output reflects that limitation.

How to access your Wiza API key

API access is restricted to Wiza’s paid plans, so you won’t find this option on free or trial accounts. Once you’ve upgraded, generating your key takes about 30 seconds.

Log in to your Wiza dashboard.
Navigate to Settings in the left sidebar.
Click the API tab.
Click Generate API Key or copy your existing key.

Store this key securely, treat it like a password. Anyone with access can make requests against your account and consume your credits.

Key functionalities of the Wiza API

The API provides several core actions that replace manual prospecting workflows. Understanding what each function does helps you determine whether Wiza fits your technical requirements.

Create and manage prospect lists

You can programmatically create new prospect lists and add contacts using API calls. This replaces the manual process of building lists in Wiza’s interface. The functionality is particularly useful when you’re pulling prospect data from your own systems—like a CRM export or a custom database—and want Wiza to enrich it automatically.

Retrieve list status and results

After submitting a list for processing, you can poll specific endpoints to check completion status. Once processing finishes, another API call pulls the full enriched results directly into your external systems. This enables fully automated workflows where prospects flow from identification to enrichment to CRM without human intervention.

Enrich contact data in real time

Unlike static databases that might contain months-old information, Wiza verifies contact data at the moment you make a request. This real-time approach typically yields higher accuracy than pre-compiled lists, though it also means longer response times compared to instant database lookups.

Process contacts in batches

For high-volume operations, batch processing lets you submit multiple contacts in a single request. This approach is significantly more efficient than individual reveal requests and reduces the total number of API calls you manage.

Apply custom segmentation filters

The API includes filtering options based on job title, company size, industry, and location. Filters help you target specific segments without pulling your entire prospect universe and burning through credits on irrelevant contacts.

What data fields does the Wiza API provide

The API returns both contact-level and company-level information. Here’s what you can expect from a successful request.

Contact-level data fields

Company-level data fields

The depth of data returned depends on what’s publicly available on LinkedIn and what Wiza can verify. Some contacts will have complete profiles; others might be missing phone numbers or have limited company information.

Wiza API rate limits and usage restrictions

Rate limits cap how many requests you can make within a specific time window—typically measured per minute or per hour. Wiza implements rate limits to protect system stability and ensure fair usage across all customers.

Individual reveal endpoint limits

Single-contact lookups have their own request caps designed for real-time enrichment use cases. Individual request limits are generally higher since they consume fewer server resources than bulk operations.

List endpoint limits

List-based operations trigger more intensive background processes, so they carry lower rate limits. Creating a large list or retrieving bulk results counts against separate thresholds from individual lookups.

What happens when you exceed rate limits

Exceeding limits triggers temporary throttling. The API returns a 429 Too Many Requests error, and you’ll wait until the rate limit window resets—usually a minute or an hour—before making new requests. Building retry logic with exponential backoff into your integration prevents errors from breaking your workflows.

How Wiza API credits work

Credits function as the currency for accessing contact information, separate from rate limits. Understanding the credit system prevents unexpected charges.

Credit deduction: One credit is typically consumed for each prospect where Wiza successfully finds and verifies a valid email or phone number.
Failed lookups: Credits generally aren’t consumed when no valid data is found—you only pay for results.
Credit monitoring: A dedicated endpoint lets you check your remaining balance programmatically, which is useful for building alerts when credits run low.

The pay-for-results model sounds appealing, but credits can drain quickly during large list operations. Some users report confusion about exactly when credits are deducted, particularly during batch processing where partial results might still consume credits.

Wiza pricing and plans

API access typically requires Wiza’s higher-tier plans. Specific features and credit allowances vary by subscription level.

Pricing details change frequently, so verify current rates directly with Wiza before committing. Watch for annual contract requirements on higher tiers.

Wiza API pros and cons

A balanced assessment helps you evaluate fit before investing time in integration.

Strengths of the Wiza API

LinkedIn integration: Deep connection to LinkedIn makes it effective for Sales Navigator-based prospecting workflows.
Real-time verification: Data is verified at request time, which typically yields better accuracy than static databases.
Email deliverability: Wiza has built a reputation for providing generally reliable work email addresses.

Weaknesses of the Wiza API

Credit consumption: The pay-per-reveal model can become expensive quickly, especially for high-volume prospecting.
LinkedIn dependency: If your prospecting doesn’t originate from LinkedIn profiles, Wiza’s value diminishes significantly.
Plan restrictions: Full API access isn’t available on entry-level plans, creating a barrier for smaller teams.

Wiza API limitations and known issues

Beyond general weaknesses, users have reported specific technical and service challenges worth considering.

Credit system complaints

Some users express frustration with unexpected charges or confusion about credit deduction timing, particularly during large list jobs where partial results might still consume credits.

Geographic and technical restrictions

IP-based restrictions can affect users in certain regions or those using VPNs. Data availability and accuracy also vary by country—North American and Western European contacts tend to be more complete than other regions.

Customer support concerns

Reports exist of challenges with support responsiveness, particularly for billing disputes and technical issues. Delays can occur when problems arise during critical campaigns.

Who uses the Wiza API

Understanding ideal use cases helps you determine whether Wiza aligns with your specific situation.

Ideal users for Wiza API

Sales teams: Teams heavily reliant on LinkedIn for outbound prospecting who want to automate contact extraction from Sales Navigator searches.
Developers: Engineers building custom prospecting tools or integrating lead generation into proprietary company software.
Agencies: Marketing and sales agencies managing prospecting workflows for multiple clients at scale.

When to consider Wiza alternatives

The Wiza API might not fit if your budget is tight, if you require massive contact volumes beyond what a credit-based model can affordably provide, or if your prospecting efforts aren’t primarily LinkedIn-centered. In any of those scenarios, exploring alternatives makes sense.

Best Wiza API alternatives for B2B prospecting

Several other B2B prospecting APIs offer different strengths depending on your priorities.

ReachStream

ReachStream’s Advanced ReachAPI emphasizes ESP-verified emails with 95%+ accuracy, charging credits only for valid email addresses. The platform includes unlimited contact views and deep filtering across job title, industry, firmographics, and technology stack.

Best for: Teams prioritizing high-accuracy data with a cost-effective, pay-for-results model.
Key capabilities: Real-time ESP email verification, global data coverage, flexible API for enrichment and prospecting, GDPR/CCPA/CAN-SPAM compliance.
Limitations: Database size may be smaller than top-tier enterprise solutions.

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Apollo.io

Apollo provides an all-in-one sales intelligence platform with a robust API. Its pricing model often includes larger credit allowances, which can be more cost-effective for high-volume operations.

Best for: Sales teams wanting an integrated platform with sequencing, analytics, and a large contact database.
Key capabilities: Extensive API, large B2B database, built-in sales engagement tools.
Limitations: Data accuracy can be inconsistent, and platform complexity creates a learning curve.

ZoomInfo

ZoomInfo offers one of the most comprehensive B2B databases available, targeting enterprise buyers.

Best for: Large enterprises requiring vast datasets and willing to invest significantly.
Key capabilities: Extensive firmographic and contact data, intent data, advanced filtering.
Limitations: Significantly higher cost, complex contracts, and accuracy complaints despite premium pricing.

Clearbit

Clearbit’s API focuses on real-time data enrichment for existing leads rather than outbound prospecting.

Best for: Marketing and sales ops teams enriching inbound leads or cleaning CRM data.
Key capabilities: Real-time enrichment from email or domain, strong marketing automation integrations.
Limitations: Less focused on outbound list building.

Lusha

Lusha offers both a Chrome extension and API access, similar to Wiza’s approach.

Best for: Sales teams and recruiters who want direct dials and emails with a simple interface.
Key capabilities: Strong phone number data, easy-to-use tools, API for automation.
Limitations: Credit model becomes expensive at scale, and email accuracy varies.

How to choose the right B2B prospecting API

Use this framework to evaluate your options systematically:

Data accuracy requirements:
How critical is real-time email verification for your campaigns? High bounce rates damage sender reputation and waste sales time.
Volume expectations:
How many contacts do you enrich monthly? Does your volume justify bulk credits or an unlimited subscription?
Integration complexity:
Do you want simple native CRM connections, or do you have development resources for custom API integrations?
Budget constraints:
Does pay-per-result pricing fit your budget, or would a subscription with fixed credits be more predictable?

Test before committing—start with a free trial to validate data quality for your specific target accounts and industries.

Get 100 Free Contacts to Compare Data Quality

Conclusion

The Wiza API empowers sales teams, developers, and agencies to turn LinkedIn prospecting into a fully automated, data-driven workflow. By delivering verified emails, phone numbers, and company information in real time, it eliminates manual copy-paste tasks, supports batch processing, and integrates directly with CRMs and sales tools. While credit-based pricing and LinkedIn dependency may pose limits for some, Wiza remains a powerful solution for high-volume, targeted outbound campaigns.

For teams seeking alternatives, platforms like ReachStream, Apollo, ZoomInfo, Clearbit, and Lusha offer complementary features depending on scale, budget, and data needs.

FAQs

Does Wiza API access require a paid plan?

Yes, API access is restricted to Wiza’s paid tiers and isn’t available on free or trial accounts.

Do unused Wiza API credits roll over each month?

Typically, unused credits expire at the end of each billing cycle and don’t roll over to the next month.

Can the Wiza API handle real-time data enrichment?

Yes, the API verifies contact information at the moment of request rather than pulling from a static database.

Wiza claims compliance with GDPR and CCPA, though you can verify compliance requirements for your specific jurisdiction and use case.

What CRM integrations work natively with Wiza API?

Wiza offers native integrations with Salesforce, HubSpot, and Pipedrive, enabling data transfer without custom development.

How does Wiza API accuracy compare to the Chrome extension?

Both use the same underlying data source and verification engine, so accuracy is consistent across methods.

Can you access Wiza intent topics through the API?

Intent data features are typically available within the main platform and may not be fully accessible through standard API endpoints.

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