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Cloud Data Loss Prevention: Node.js Client

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The Data Loss Prevention API provides programmatic access to a powerful detection engine for personally identifiable information and other privacy-sensitive data in unstructured data streams.

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:


Before you begin

  1. Select or create a Cloud Platform project.
  2. Enable billing for your project.
  3. Enable the Cloud Data Loss Prevention API.
  4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install @google-cloud/dlp

Using the client library

  // Instantiates a client
  const dlp = new DLP.DlpServiceClient();

  // The string to inspect
  const string = 'Robert Frost';

  // The project ID to run the API call under
  const projectId = process.env.GCLOUD_PROJECT;

  // The minimum likelihood required before returning a match
  const minLikelihood = 'LIKELIHOOD_UNSPECIFIED';

  // The maximum number of findings to report (0 = server maximum)
  const maxFindings = 0;

  // The infoTypes of information to match
  const infoTypes = [{name: 'PERSON_NAME'}, {name: 'US_STATE'}];

  // Whether to include the matching string
  const includeQuote = true;

  // Construct item to inspect
  const item = {value: string};

  // Construct request
  const request = {
    parent: dlp.projectPath(projectId),
    inspectConfig: {
      infoTypes: infoTypes,
      minLikelihood: minLikelihood,
      limits: {
        maxFindingsPerRequest: maxFindings,
      includeQuote: includeQuote,
    item: item,

  // Run request
  const [response] = await dlp.inspectContent(request);
  const findings = response.result.findings;
  if (findings.length > 0) {
    findings.forEach(finding => {
      if (includeQuote) {
        console.log(`\tQuote: ${finding.quote}`);
      console.log(`\tInfo type: ${}`);
      console.log(`\tLikelihood: ${finding.likelihood}`);
  } else {
    console.log(`No findings.`);


Samples are in the samples/ directory. The samples' has instructions for running the samples.

Sample Source Code Try it
Deid source code Open in Cloud Shell
Inspect source code Open in Cloud Shell
Job Management source code Open in Cloud Shell
Metadata source code Open in Cloud Shell
Quickstart source code Open in Cloud Shell
Redact source code Open in Cloud Shell
Risk Analysis source code Open in Cloud Shell
Inspect Templates source code Open in Cloud Shell
Job Triggers source code Open in Cloud Shell

The Cloud Data Loss Prevention Node.js Client API Reference documentation also contains samples.


This library follows Semantic Versioning.

This library is considered to be General Availability (GA). This means it is stable; the code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against GA libraries are addressed with the highest priority.

More Information: Google Cloud Platform Launch Stages


Contributions welcome! See the Contributing Guide.


Apache Version 2.0