diff --git a/src/main.test.ts b/src/main.test.ts
index 9d67bbc..3ef81c4 100644
--- a/src/main.test.ts
+++ b/src/main.test.ts
@@ -8,7 +8,8 @@ import { MockFetch } from '../test/mock_fetch.js'
 import { base64Encode, streamToString } from '../test/util.js'
 
 import { MissingBlobsEnvironmentError } from './environment.js'
-import { getDeployStore, getStore } from './main.js'
+import { getDeployStore, getStore, setEnvironmentContext } from './main.js'
+import { base64Decode } from './util.js'
 
 beforeAll(async () => {
   if (semver.lt(nodeVersion, '18.0.0')) {
@@ -1700,3 +1701,25 @@ describe('Region configuration', () => {
     })
   })
 })
+
+describe('setEnvironmentContext', () => {
+  test('Injects the context object into the environment', () => {
+    expect(env.NETLIFY_BLOBS_CONTEXT).toBeUndefined()
+
+    setEnvironmentContext({
+      deployID,
+      primaryRegion: 'us-east-1',
+      siteID,
+      token: apiToken,
+    })
+
+    expect(env.NETLIFY_BLOBS_CONTEXT).toBeTypeOf('string')
+
+    const context = JSON.parse(base64Decode(env.NETLIFY_BLOBS_CONTEXT as string))
+
+    expect(context.deployID).toBe(deployID)
+    expect(context.primaryRegion).toBe('us-east-1')
+    expect(context.siteID).toBe(siteID)
+    expect(context.token).toBe(apiToken)
+  })
+})
diff --git a/src/main.ts b/src/main.ts
index 7dc624d..424465d 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,3 +1,4 @@
+export { setEnvironmentContext } from './environment.ts'
 export { connectLambda } from './lambda_compat.ts'
 export { getDeployStore, getStore } from './store_factory.ts'
 export { listStores } from './store_list.ts'