How to Migrate from Amazon S3 to Fastio API

Amazon S3 handles object storage well for basic needs. Developers often pair it with vector databases like Pinecone for RAG, relational DBs for metadata, and custom sharing logic. This splits your stack across services, increases costs, and complicates agent workflows.

Fastio provides object-like storage through workspaces but adds native intelligence. Upload files and they auto-index for semantic search and RAG chat. Agents access a consolidated MCP toolset for full CRUD, versioning, and ownership transfer.

Benefits include scalable cloud storage, no infrastructure management, and unified APIs for storage, AI, and collaboration. For agentic teams, this streamlines architecture without custom integrations.

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More on this subject: Agent Integrations and APIs (96 guides)

Fastio suits agentic workflows where S3 feels like commodity storage. Use S3 for pure archival; Fastio for active team/agent use.

Review your S3 bucket size, object count, and access patterns. Ensure files <1GB or plan splitting. Get AWS credentials with read access. Sign up for a Fastio account and start a 14-day Business Trial requiring a credit card.

Install tools:

• AWS CLI v2
• Python 3.10+ with boto3, requests
• jq for JSON processing

Test Fastio API access with curl after auth.

Create agent account via API:

curl -X POST https://api.fast.io/current/user/ \\
  -u email:password \\
  -d name="Migration Admin"

Create org and workspace:

ORG_ID=$(curl -s -X POST https://api.fast.io/current/org/ \\
  -H "Authorization: Bearer $JWT" \\
  -d "domain=my-migration-org" -d "name=My Org" | jq -r .response.id)

WS_ID=$(curl -s -X POST "https://api.fast.io/current/org/$ORG_ID/workspace/" \\
  -H "Authorization: Bearer $JWT" \\
  -d "folder_name=migrated-bucket" -d "name=Migrated Bucket" | jq -r .response.id)

Enable intelligence for auto-indexing.

List objects and metadata:

aws s3 ls s3://your-bucket --recursive --summarize \\
  --page-size 1000 > s3-inventory.json

Parse for total objects, size, last modified. Identify large files >1GB to split or skip.

Use presigned S3 URLs + Fastio web-import for server-side copy (no local bandwidth).

Python script (migrate_s3.py):

import boto3
import requests
import json
import time
from concurrent.futures import ThreadPoolExecutor

s3 = boto3.client('s3')
FASTIO_BASE = 'https://api.fast.io/current'
headers = {'Authorization': f'Bearer {jwt_token}'}
ws_id = 'your_ws_id'
parent_id = 'root'

def presign_and_import(key):
    presign_url = s3.generate_presigned_url('get_object',
        Params={'Bucket': 'your-bucket', 'Key': key},
        ExpiresIn=3600)
    resp = requests.post(f'{FASTIO_BASE}/upload/web-import/',
        headers=headers,
        data={'profile_type': 'workspace', 'profile_id': ws_id,
              'parent_id': parent_id, 'url': presign_url})
    if resp.json().get('result'):
        print(f'Migrated {key}')
    else:
        print(f'Failed {key}: {resp.text}')

# List keys
paginator = s3.get_paginator('list_objects_v2')
keys = []
for page in paginator.paginate(Bucket='your-bucket'):
    keys.extend(obj['Key'] for obj in page.get('Contents', []))

# Batch import (parallel 10)
with ThreadPoolExecutor(max_workers=10) as executor:
    executor.map(presign_and_import, keys)

# Poll import status if needed

Run in batches for PB scale. Monitor with /upload/web-list/. Incremental: import only modified since last sync.

Replace boto3 put_object with Fastio upload.

S3 example:

s3.put_object(Bucket='bucket', Key='file.txt', Body=data)

Fastio:

# Init upload
init_resp = requests.post(f'{FASTIO_BASE}/upload/init/',
    headers=headers,
    data={'profile_type': 'workspace', 'profile_id': ws_id,
          'parent_id': 'root', 'name': 'file.txt', 'size': len(data)})
upload_id = init_resp.json()['response']['id']

# Upload chunk (parallel for large)
requests.put(init_resp.json()['response']['upload_url'], data=data)

# Complete
requests.post(f'{FASTIO_BASE}/upload/{upload_id}/complete/', headers=headers)

Use MCP for agents.

Compare object count/size S3 vs Fastio storage list.

Test reads from Fastio preview URLs.

Update app config to point to Fastio endpoints.

Monitor activity logs. Go live with dual-write during transition.

• Parallelize with 100+ threads
• Use S3 inventory reports for delta sync
• Split >1GB files with ffmpeg or zip
• Throttle requests (Fastio rate limits)
• Dual-read until confident