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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: `projects/${projectId}/locations/global`,
  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.

Supported Node.js Versions

Our client libraries follow the Node.js release schedule. Libraries are compatible with all current active and maintenance versions of Node.js.

Client libraries targetting some end-of-life versions of Node.js are available, and can be installed via npm dist-tags. The dist-tags follow the naming convention legacy-(version).

Legacy Node.js versions are supported as a best effort:

  • Legacy versions will not be tested in continuous integration.
  • Some security patches may not be able to be backported.
  • Dependencies will not be kept up-to-date, and features will not be backported.

Legacy tags available

  • legacy-8: install client libraries from this dist-tag for versions compatible with Node.js 8.


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.

Please note that this, the samples/, and a variety of configuration files in this repository (including .nycrc and tsconfig.json) are generated from a central template. To edit one of these files, make an edit to its template in this directory.


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