AI assistant that ingests new regulatory/fiscal texts, analyzes their impact on an equity portfolio (S&P-500 reference), and returns portfolio-aware recommendations. Stack: React (Vite) + API Gateway (REST) + AWS Lambda (Python) + Bedrock (Claude Sonnet), optional Amazon Kendra for retrieval.

• 🔼 Upload regulatory docs (CSV/JSON/PDF UI; file metadata currently used, full ingest next)
• 🧠 Prompt includes user context + holdings (from src/data/portfolio.json)
• 🔎 (Planned) Retrieve supporting evidence via Amazon Kendra
• 🌐 Fully CORS-enabled API (browser friendly)
• ☁️ Serverless backend (Lambda) with Bedrock model call

React UI (Vite) ── POST /prod/ ──► API Gateway (REST) │ └─► Lambda (Python) │ └─► Bedrock Runtime (Claude 3.5 Sonnet) (Optional) Kendra for retrieval S3 ──(Kendra data source)──► Kendra Index 

UI/ src/pages/ingestion/index.tsx # Ingestion page (frontend) src/data/portfolio.json # Sample holdings used in prompts lambda/ lambda_function.py # Backend handler (Bedrock + CORS) 

• API Gateway (REST): 1pixxoj603 → Stage: prod

  • Methods on root /: OPTIONS (Mock), POST (Lambda)
  • Important: Frontend must call https://1pixxoj603.execute-api.us-east-1.amazonaws.com/prod/ (note trailing /)

• Lambda: indorex-ai-backend (role: indorex-ai-backend-role-v9qcn1bg)

• Bedrock Model: anthropic.claude-3-5-sonnet-20240620-v1:0 (us-east-1)

• Kendra Index: datathon-polyfinances-index-b9b3e5fc Data source (S3): datathon-polyfinances-s3-source

• S3 examples: 2025-09-26_stocks-performance.csv, 2025-08-15_composition_sp500.csv

• Node 18+

• AWS account with access to:

  • Bedrock in us-east-1 (Model Access enabled for Claude 3.5 Sonnet)
  • Lambda, API Gateway, S3, Kendra (optional)

cd UI npm i npm run dev # Open http://localhost:5173/dashboard

Keep the trailing slash to avoid MissingAuthenticationToken.

• Package lambda/lambda_function.py as a ZIP and upload, or use your pipeline.
• Runtime: Python 3.10+ (compatible with boto3/botocore in AWS runtime)

Bedrock → Model access → enable Claude 3.5 Sonnet in us-east-1.

Attach an inline policy to indorex-ai-backend-role-v9qcn1bg:

{ "Version": "2012-10-17", "Statement": [ { "Sid": "AllowClaudeInvoke", "Effect": "Allow", "Action": [ "bedrock:InvokeModel", "bedrock:InvokeModelWithResponseStream" ], "Resource": "arn:aws:bedrock:us-east-1::foundation-model/anthropic.claude-3-5-sonnet-20240620-v1:0" }, { "Sid": "AllowMarketplaceSubsView", "Effect": "Allow", "Action": "aws-marketplace:ViewSubscriptions", "Resource": "*" } ] }

If you just added this, give IAM/STS a few minutes, then redeploy the Lambda once.

POST https://1pixxoj603.execute-api.us-east-1.amazonaws.com/prod/

{ "message": "You are a financial analysis assistant...\nInput JSON: { context, portfolio, files }" }

Frontend composes message including:

• context (textarea)
• portfolio (from src/data/portfolio.json)
• files (array of file metadata; full upload pipeline pending)

{ "answer": "Model-generated analysis..." }

OPTIONS /prod/ returns:

Access-Control-Allow-Origin: * Access-Control-Allow-Methods: GET,POST,OPTIONS Access-Control-Allow-Headers: Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token 

Preflight:

curl -i -X OPTIONS https://1pixxoj603.execute-api.us-east-1.amazonaws.com/prod/ \ -H "Origin: http://localhost:5173" \ -H "Access-Control-Request-Method: POST"

Invoke:

curl -i -X POST https://1pixxoj603.execute-api.us-east-1.amazonaws.com/prod/ \ -H "Content-Type: application/json" \ -d '{"message":"AI portfolio analysis"}'

• Index: datathon-polyfinances-index-b9b3e5fc (Active)
• Data Source: datathon-polyfinances-s3-source (S3 sync working)
• Next: Add a Lambda step to query Kendra and inject top passages into the Bedrock prompt.

Failed to fetch (browser) / CORS

• Verify preflight returns 200 with the headers above.
• Ensure API URL has trailing slash (/prod/).

MissingAuthenticationToken

• Usually hitting /prod (no trailing slash). Use /prod/.

AccessDeniedException bedrock:InvokeModel or aws-marketplace:ViewSubscriptions

• Attach the IAM policy above and ensure Bedrock Model Access is enabled for the account.
• Wait ~5–15 minutes for STS cache; redeploy Lambda.

NoneType has no attribute get in Lambda

• Ensure you parse event["body"] safely before using.

• Lock down IAM to least privilege once stabilized (narrow resources where possible).
• Bedrock/Kendra incur usage costs—monitor in Cost Explorer.

• ✅ CORS stable, UI ↔ API ↔ Lambda OK
• 🚧 Bedrock invocation: finish permissions + model access, return real AI analysis
• 🔜 Wire Kendra retrieval (RAG)
• 🔜 Real file uploads to S3 + parsing pipeline
• 🔜 Better output formatting (risk metrics, sector exposure, recs)

• Indorex AI / Datathon Polyfinances team
• AWS stack: us-east-1
• Primary Lambda: indorex-ai-backend
• API: 1pixxoj603 (stage prod)