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Data Surfer V3.9: Public API, Chrome Extension & More

Data Surfer V3.9: Public API, Chrome Extension & More

February 4, 2026
Nick Watson
7 min read

Build, Extend, Engage

V3.9 opens Data Surfer up. The new Public REST API lets you integrate company and contact intelligence directly into your workflows, CRM, or internal tools. The Chrome Extension for LinkedIn brings Data Surfer's engagement recommendations into your browser as you work LinkedIn. And the updated Pipedrive Integration now supports two-way sync with enrichment built in.

What's New in V3.9:

  • Public REST API- Full API with key management and interactive docs
  • Chrome Extension for LinkedIn- Guided lead engagement on LinkedIn
  • Pipedrive Integration- Two-way sync with enrichment and research
  • Smarter Search- LinkedIn URLs, AI quality filter, terminology discovery
  • Security Hardening- Rate limiting, session management, stronger passwords
  • Signals Improvements- Notes, editable drafts, recommendation history

Major Features

Public REST API
Full REST API with bearer token authentication, interactive documentation, and endpoints for companies, contacts, search, research, and deep search. Manage API keys from your admin dashboard and build custom integrations with your existing tools. This API also powers the MCP Connector for Claude.
View API Docs
Chrome Extension for LinkedIn
A new Chrome extension for guided LinkedIn engagement. Cycle through recommended actions on cold prospects and warm leads: follow pages, connect with contacts, comment on posts. Data Surfer suggests what to say, but you stay in control. See the Chrome Extension integration page for setup details.
View on Chrome Web Store
Pipedrive Integration (Updated)
Contact and company sync with data enrichment and research features built in. Two-way sync keeps your CRM and Data Surfer aligned. Enrich Pipedrive records directly from the integration. See our Pipedrive integration page for full details.
View on Pipedrive Marketplace
Smarter Contact Finder
LinkedIn URLs now returned in deep search and company lookups where available. New AI quality filter on company search results reduces noise. Industry-specific terminology discovery helps you find companies using the right language.
Security Hardening
Rate limiting across the platform. Sessions invalidated on password change. Email notifications for password changes. Minimum password length increased to 12 characters.
Signals Improvements
Notes and guidance for cold outreach leads. Editable recommendation comments and drafts. View and restore dismissed recommendations. Full recommendation history showing actions taken over time.

The Data Surfer API

Everything you can do in the Data Surfer dashboard is now available programmatically. The API uses standard REST conventions with JSON request and response bodies, bearer token authentication, and clear error codes. Interactive documentation lives at api.data-surfer.com where you can test endpoints directly.

Key Endpoints

GET/companies
POST/companies/lookup
POST/companies/deep-search
GET/contacts
POST/contacts/search
POST/research/run

What You Can Build

CRM Enrichment Pipelines

Pull company intelligence and contact data into your CRM automatically. Run research templates against new accounts as they enter your pipeline.

Custom Lead Scoring

Combine Data Surfer's AI analysis scores with your own criteria to build lead scoring models tailored to your business.

Internal Dashboards

Surface company research and contact data in your team's existing tools. No need to context-switch into another platform.

Chrome Extension for LinkedIn

Most Chrome extensions for LinkedIn automate actions on your behalf and risk getting your account restricted. The Data Surfer extension takes a different approach: it guides you through recommended engagement actions while you stay in full control. Every follow, comment, and connection request is yours to make (or skip).

How It Works:

1

Recommendations Queue

Data Surfer builds a queue of engagement actions based on your cold outreach and warm lead lists. Follow this company page. Comment on that contact's recent post. Connect with a decision maker.

2

Guided Navigation

The extension takes you directly to the relevant LinkedIn page or post. No searching, no scrolling through feeds. You land exactly where you need to be.

3

Suggested Comments

For comment actions, Data Surfer suggests what to write based on the post content and your relationship with the prospect. Edit, rewrite, or ignore the suggestion entirely.

4

Auto-Advance

Complete or dismiss an action and the extension moves to the next recommendation automatically. Work through your engagement queue efficiently without losing momentum.

Your LinkedIn Account Stays Safe

The extension never performs actions on your behalf. It does not click buttons, submit forms, or send messages automatically. LinkedIn's terms of service prohibit automation, and Data Surfer respects that. You are the one engaging, the extension just tells you where and gives you ideas.

Install from Chrome Web Store

Other Improvements

Contact Finder & Search

  • LinkedIn URL returned in deep search and company lookups where available
  • AI quality filter on company search results to reduce irrelevant matches
  • Industry-specific terminology discovery for more precise company matching

Security

  • Rate limiting introduced across the platform
  • Sessions invalidated on password change
  • Password change email notifications
  • Minimum password length increased to 12 characters

Signals

  • Notes and guidance for cold outreach leads
  • Editable recommendation comments and drafts
  • View and restore dismissed recommendations
  • Full recommendation history showing actions taken over time

Missed the previous release? Read about V3.8: Cold Outreach, Warm Leads & Automations. Up next: V4.0: Intelligent Outreach, MCP for Claude & Email Sync.

Frequently Asked Questions

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