31:T737,# AWS S3 API Starter

[Docs](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-s3/index.html) | Related: [AWS HTTP Status Dashboard](https://observablehq.com/@observablehq/aws-http-status-dashboard)

Get started using the Amazon Web Services SDK for S3 securely in the browser. 1. Create an IAM user and get [access keys](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html) 2. Save access key ID as a [Secret](https://observablehq.com/select-workspace?next=secrets-settings) `AWS_ACCESS_KEY_ID` ${hasAccessKeyID ? "✅ Secret found" : "⚠️ Secret not found"} 3. Save secret access key as a [Secret](https://observablehq.com/select-workspace?next=secrets-settings) `AWS_SECRET_ACCESS_KEY` ${hasSecretAccessKey ? "✅ Secret found" : "⚠️ Secret not found"} 4. Set [your bucket’s CORS permissions](https://s3.console.aws.amazon.com/s3/buckets/${bucket}?region=${region}&tab=permissions) to ${htl.html`

[
  {
    "AllowedHeaders": [
      "Authorization",
      "amz-sdk-invocation-id",
      "amz-sdk-request",
      "x-amz-content-sha256",
      "x-amz-date",
      "x-amz-user-agent"
    ],
    "AllowedMethods": [
      "GET"
    ],
    "AllowedOrigins": [
      "${window.location.origin}"
    ],
    "ExposeHeaders": [],
    "MaxAgeSeconds": 3000
  }
]

`} 5. Set your region and bucket32:[{"id":"3a8c57a0bf6cfec5f655686732820663c00ffcac2bb54dace4b8440b4855fb8b373f4d75e8389b9499d18c07746b4b2739f7d03cedcffd5615e5ffcefed58cd8","href":"https://static.observableusercontent.com/files/3a8c57a0bf6cfec5f655686732820663c00ffcac2bb54dace4b8440b4855fb8b373f4d75e8389b9499d18c07746b4b2739f7d03cedcffd5615e5ffcefed58cd8","name":"contents.json","type":"application/json","lastModified":1626444450594.59,"size":25796}] 2f:{"title":"AWS S3 API Starter","cells":[{"id":0,"value":"$31","pinned":false,"hidden":false,"mode":"md"},{"id":26,"value":"region = \"us-east-1\"","pinned":true,"hidden":false,"mode":"ojs"},{"id":45,"value":"bucket = \"pinyin\"","pinned":true,"hidden":false,"mode":"ojs"},{"id":442,"value":"Browse the bucket:","pinned":false,"hidden":false,"mode":"md"},{"id":330,"value":"Inputs.table(contents, {\n columns: [\"Key\", \"LastModified\", \"Owner\", \"Size\"],\n format: {\n Owner: (d) => d.DisplayName,\n Key: (d) => html`${d}`\n }\n})","pinned":true,"hidden":false,"mode":"ojs"},{"id":312,"value":"// Either load the bucket contents or load the sample cached data\ncontents = client\n ? (await client.send(\n new AWS.ListObjectsCommand({ Bucket: bucket, MaxKeys: 100 })\n )).Contents\n : FileAttachment(\"contents.json\").json()","pinned":true,"hidden":false,"mode":"ojs"},{"id":427,"value":"---","pinned":false,"hidden":false,"mode":"md"},{"id":165,"value":"AWS = import(\"https://cdn.skypack.dev/@aws-sdk/client-s3@3.39.0\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":214,"value":"client = {\n try {\n return new AWS.S3Client({\n region,\n credentials: {\n accessKeyId: Secret(\"AWS_ACCESS_KEY_ID\"),\n secretAccessKey: Secret(\"AWS_SECRET_ACCESS_KEY\")\n }\n })\n } catch {\n return false;\n }\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":340,"value":"hasAccessKeyID = {\n try {\n Secret(\"AWS_ACCESS_KEY_ID\");\n return true;\n } catch {\n return false;\n }\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":354,"value":"hasSecretAccessKey = {\n try {\n Secret(\"AWS_SECRET_ACCESS_KEY\");\n return true;\n } catch {\n return false;\n }\n}","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W32","stdlib":"1","titling":"auto"}