Skip to main content

Audit Logs Inbound

Audit logging is an important part of API security that plays a critical role in detecting and correcting issues such as unauthorized access or permission elevations within your system. Audit logging is also a requirement for many compliance certifications as well as part of the buying criteria for larger enterprises.

Adding Audit Logging to your APIs that are secured with Zuplo is as easy as adding a policy. Typically you want to add audit logs to any API that modifies data, however depending on the API you may want it on read operations as well (i.e. retrieve a secret key, etc.)

Paid Add On

This policy is only available as a paid add-on. If you would like to try this please reach out to us:


The configuration shows how to configure the policy in the 'policies.json' document.

"name": "my-audit-log-inbound-policy",
"policyType": "audit-log-inbound",
"handler": {
"export": "AuditLogsInboundPolicy",
"module": "$import(@zuplo/runtime)",
"options": {
"logIpAddress": true,
"logUser": true,
"logGeolocation": true,
"logQueryParameters": true,
"logRouteParameters": true,
"tenant": "${params.tenantId}",
"metadata": {
"module": "$import(./modules/audit-logs)",
"export": "auditLogData"
  • name the name of your policy instance. This is used as a reference in your routes.
  • policyType the identifier of the policy. This is used by the Zuplo UI. Value should be audit-log-inbound.
  • handler/export The name of the exported type. Value should be AuditLogsInboundPolicy.
  • handler/module the module containing the policy. Value should be $import(@zuplo/runtime).
  • handler/options The options for this policy:
    • logIpAddress

      if the IP address should be logged

    • logUser

      if the user's sub should be logged

    • logGeolocation

      if the geolocation information should be logged (i.e. state, country, longitude, latitude, etc.)

    • logQueryParameters

      log the values of query parameters

    • logRouteParameters
    • tenant

      if the route parameters should be logged (i.e. the value of customerId in the route /customers/:customerId)

    • metadata

      A function to add additional data to the audit logs

Adding Custom Metadata

You can add any additional data to the audit logs with a custom function.


Custom metadata functions cannot be asynchronous. Due to the frequency of their calls, asynchronous functions will add significant latency to your API.

//module - ./modules/audit-logs.ts

import { ZuploRequest } from "@zuplo/runtime";

export function auditLogMetadata(request: ZuploRequest): any {
const metadata = {
customTraceId: request.headers.get("custom-trace-id"),
return metadata;

Log Data

The structure of an audit log is shown below.

"route": "/customers/:customerId",
"method": "GET",
"query": {
"a": 1,
"b": 2
"params": {
"customerId": "12345"
"headers": {
"userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36"
"user": {
"sub": "user|12356"
"geolocation": {
"country": "US",
"city": "Seattle",
"continent": "NA",
"latitude": "1.123",
"longitude": "4.567",
"postalCode": "29700",
"metroCode": "100",
"region": "Washington",
"timezone": "America/LosAngeles"
"metadata": {
// Custom data

Audit Logs in the Portal

Audit logs are not currently surfaced in the Zuplo portal, but the feature is planned soon.

Audit Log API

Audit logs can be retrieved using the Zuplo Management API. Logs can be retrieved by time span and can be filtered by tenant.

GET /deployments/:deploymentId/auditlogs?tenant=TENANT
content-type: application/json
authorization: Bearer YOUR_TOKEN

Read more about how policies work