diff --git a/integration-tests/profiler/profiler.spec.js b/integration-tests/profiler/profiler.spec.js
index 3b26448a2b..57136a0a2f 100644
--- a/integration-tests/profiler/profiler.spec.js
+++ b/integration-tests/profiler/profiler.spec.js
@@ -34,17 +34,24 @@ function expectProfileMessagePromise (agent, timeout,
 ) {
   const fileNames = expectedProfileTypes.map(type => `${type}.pprof`)
   return agent.assertMessageReceived(({ headers, _, files }) => {
+    let event
     try {
       assert.propertyVal(headers, 'host', `127.0.0.1:${agent.port}`)
       assert.propertyVal(files[0], 'originalname', 'event.json')
-      const event = JSON.parse(files[0].buffer.toString())
+      event = JSON.parse(files[0].buffer.toString())
       assert.propertyVal(event, 'family', 'node')
+      assert.isString(event.info.profiler.activation)
+      const ssiEnabled = event.info.profiler.ssi.enabled
+      assert.isBoolean(ssiEnabled)
+      if (ssiEnabled) {
+        assert.isString(event.info.profiler.ssi.mechanism)
+      }
       assert.deepPropertyVal(event, 'attachments', fileNames)
       for (const [index, fileName] of fileNames.entries()) {
         assert.propertyVal(files[index + 1], 'originalname', fileName)
       }
     } catch (e) {
-      e.message += ` ${JSON.stringify({ headers, files })}`
+      e.message += ` ${JSON.stringify({ headers, files, event })}`
       throw e
     }
   }, timeout, multiplicity)
diff --git a/packages/dd-trace/src/profiler.js b/packages/dd-trace/src/profiler.js
index 65c0d00709..914cfc3dfd 100644
--- a/packages/dd-trace/src/profiler.js
+++ b/packages/dd-trace/src/profiler.js
@@ -8,8 +8,8 @@ process.once('beforeExit', () => { profiler.stop() })
 
 module.exports = {
   start: config => {
-    const { service, version, env, url, hostname, port, tags, repositoryUrl, commitSHA } = config
-    const { sourceMap, exporters } = config.profiling
+    const { service, version, env, url, hostname, port, tags, repositoryUrl, commitSHA, injectionEnabled } = config
+    const { enabled, sourceMap, exporters } = config.profiling
     const logger = {
       debug: (message) => log.debug(message),
       info: (message) => log.info(message),
@@ -17,6 +17,16 @@ module.exports = {
       error: (message) => log.error(message)
     }
 
+    const libraryInjected = injectionEnabled.length > 0
+    let activation
+    if (enabled === 'auto') {
+      activation = 'auto'
+    } else if (enabled === 'true') {
+      activation = 'manual'
+    } else if (injectionEnabled.includes('profiler')) {
+      activation = 'injection'
+    } // else activation = undefined
+
     return profiler.start({
       service,
       version,
@@ -29,7 +39,9 @@ module.exports = {
       port,
       tags,
       repositoryUrl,
-      commitSHA
+      commitSHA,
+      libraryInjected,
+      activation
     })
   },
 
diff --git a/packages/dd-trace/src/profiling/config.js b/packages/dd-trace/src/profiling/config.js
index f866a925ff..8d399c68bf 100644
--- a/packages/dd-trace/src/profiling/config.js
+++ b/packages/dd-trace/src/profiling/config.js
@@ -125,6 +125,8 @@ class Config {
       port
     })))
 
+    this.libraryInjected = options.libraryInjected
+    this.activation = options.activation
     this.exporters = ensureExporters(options.exporters || [
       new AgentExporter(this)
     ], this)
diff --git a/packages/dd-trace/src/profiling/exporter_cli.js b/packages/dd-trace/src/profiling/exporter_cli.js
index 53db9f5f78..474f4237de 100644
--- a/packages/dd-trace/src/profiling/exporter_cli.js
+++ b/packages/dd-trace/src/profiling/exporter_cli.js
@@ -16,10 +16,22 @@ function exporterFromURL (url) {
   if (url.protocol === 'file:') {
     return new FileExporter({ pprofPrefix: fileURLToPath(url) })
   } else {
+    const injectionEnabled = (process.env.DD_INJECTION_ENABLED || '').split(',')
+    const libraryInjected = injectionEnabled.length > 0
+    const profilingEnabled = (process.env.DD_PROFILING_ENABLED || '').toLowerCase()
+    const activation = ['true', '1'].includes(profilingEnabled)
+      ? 'manual'
+      : profilingEnabled === 'auto'
+        ? 'auto'
+        : injectionEnabled.includes('profiling')
+          ? 'injection'
+          : 'unknown'
     return new AgentExporter({
       url,
       logger,
-      uploadTimeout: timeoutMs
+      uploadTimeout: timeoutMs,
+      libraryInjected,
+      activation
     })
   }
 }
diff --git a/packages/dd-trace/src/profiling/exporters/agent.js b/packages/dd-trace/src/profiling/exporters/agent.js
index ff37b6f090..e4ec0e528a 100644
--- a/packages/dd-trace/src/profiling/exporters/agent.js
+++ b/packages/dd-trace/src/profiling/exporters/agent.js
@@ -53,7 +53,7 @@ function computeRetries (uploadTimeout) {
 }
 
 class AgentExporter {
-  constructor ({ url, logger, uploadTimeout, env, host, service, version } = {}) {
+  constructor ({ url, logger, uploadTimeout, env, host, service, version, libraryInjected, activation } = {}) {
     this._url = url
     this._logger = logger
 
@@ -65,6 +65,8 @@ class AgentExporter {
     this._host = host
     this._service = service
     this._appVersion = version
+    this._libraryInjected = !!libraryInjected
+    this._activation = activation || 'unknown'
   }
 
   export ({ profiles, start, end, tags }) {
@@ -105,6 +107,11 @@ class AgentExporter {
           kernel_version: os.version()
         },
         profiler: {
+          activation: this._activation,
+          ssi: {
+            enabled: this._libraryInjected,
+            mechanism: this._libraryInjected ? 'injected_agent' : undefined
+          },
           version
         },
         runtime: {
diff --git a/packages/dd-trace/test/profiling/exporters/agent.spec.js b/packages/dd-trace/test/profiling/exporters/agent.spec.js
index 3987c1a982..1a0137272c 100644
--- a/packages/dd-trace/test/profiling/exporters/agent.spec.js
+++ b/packages/dd-trace/test/profiling/exporters/agent.spec.js
@@ -115,7 +115,10 @@ describe('exporters/agent', function () {
     expect(event.info.platform).to.have.property('kernel_release', os.release())
     expect(event.info.platform).to.have.property('kernel_version', os.version())
     expect(event.info).to.have.property('profiler')
-    expect(Object.keys(event.info.profiler)).to.have.length(1)
+    expect(Object.keys(event.info.profiler)).to.have.length(3)
+    expect(event.info.profiler).to.have.property('activation', 'unknown')
+    expect(event.info.profiler).to.have.property('ssi')
+    expect(event.info.profiler.ssi).to.have.property('enabled', false)
     expect(event.info.profiler).to.have.property('version', version)
     expect(event.info).to.have.property('runtime')
     expect(Object.keys(event.info.runtime)).to.have.length(2)