Explore, understand, and govern your MongoDB data
3T Lens brings exploration, comparison, schema analysis, automation, and PII governance together in one browser-based workspace, with policy built in from the first query.
One workspace for your whole data team
Developers, analysts, and compliance officers usually work in different tools and see different versions of the truth. 3T Lens gives them one place to work, with the same connections and the same rules, so access is governed the same way whoever is looking.
No local installations
Everything runs in a browser. Users sign in with their company identity.
No shared passwords
Connections are managed centrally, and users never see database credentials.
Governed by default
Data reads are checked against your policies before results come back.
Know what you hold, verify what changed
Inspect collections read-only, track schema drift, compare environments before you sync, and schedule recurring checks, all under the same policies.
Peruse your data without risk of abuse
Browse any collection you have access to, from a few documents to millions, and see its shape before you write a single query.
Explore. Page through large collections in a fast, read-only table view.
Schema analysis. See every field, its type, and how often it appears, with history to track how a schema drifts.
AI Assistant. Ask questions about your data in plain language.
Compare, sync, and automate
Did staging drift from production? Did the migration copy everything? Compare answers those questions in seconds. No need for specialised scripts.
Compare. Diff two collections, on the same cluster or across clusters, with added, deleted, and modified documents highlighted side by side.
Sync. Bring the target in line with the source once you’ve reviewed the differences.
Scheduled tasks. Run compares, syncs, and scans on a schedule, and track success rates and upcoming runs on one dashboard.
Find sensitive data before an auditor (or bad actor) does
You can’t govern what you can’t see. The 3T Lens PII Scanner classifies every field in a collection, including nested arrays and subdocuments, according to risk.
Hybrid detection
Assess structural categories; find and tag potential credit card numbers, IBAN, US SSN, and EU national IDs, and more plus neural detection for English free text.
Scored, not just flagged
Fields are bucketed Critical, PII, Potentially Sensitive, or Likely Safe, each with a confidence score and a NIST SP 800-122 impact level.
Regulation-aware
Findings map to GDPR, HIPAA, PCI-DSS, CCPA, and LGPD.
Risk exposure
Every result states how many documents it covered, so a sample is never mistaken for a full pass.
Governance that follows the data
A report that sits in a drawer protects nothing. In 3T Lens, scan findings feed the policy engine directly, and the same policies cover Lens itself and, through the 3T Governance Proxy, every other MongoDB tool your teams use.
Masked by role. Viewers are refused sensitive reads, standard users get masked values, and admins see the data whole.
Enforced everywhere. The Governance Proxy applies the same policies to Studio 3T, Compass, mongosh, applications, and AI agents.
Fail closed. If a required PII scan is missing, access is refused rather than passed through unchecked.
Audit-ready. CSV and JSON export, a read-only compliance auditor role, and an append-only audit trail you can stream to your SIEM.
Built for MongoDB
3T Lens comes from the team behind Studio 3T, the leading IDE for document databases. It treats documents the way MongoDB stores them: nested, polymorphic, and large.
Hosted or Self-hosted
Use 3T Lens as a hosted service, or run it in your own infrastructure.
API and MCP access
Drive scans, compares, and tasks from scripts, pipelines, your AI-enabled IDE or chat UI.
Ready to see your data clearly?
In a 30-minute demo, we’ll explore, compare, and scan a collection live, and show you how findings become policy. Already a Studio 3T customer? Ask your account manager about 3T Lens.