Deploys in your AWS account — your data never leaves

Open-source, self-hosted
AWS FinOps with agentic AI

KostOps is the open-source, self-hosted FinOps platform that lives entirely in your AWS account. CUR analytics, AI-powered cost chat, automated findings, and Slack alerts — one unified platform, no vendor fee, no data leaving your infrastructure.

$0
SaaS vendor fee
~$45/mo
Total AWS cost (10 accounts)
1
Unified platform
20 min
Deploy time
Slack — #finops
uday /kostops what's my biggest cost spike this month?
⏳ Analysing your AWS cost data, this may take a few seconds…
Your EC2 spend jumped 47% vs last month — from $12,400 to $18,200.
The increase is driven by 3 r6i.4xlarge instances in us-east-1 launched on Apr 3rd,
currently running with avg CPU of 8%. Potential savings: ~$4,100/month.
Want me to create a finding and investigate further? [Yes / No]
View on GitHub
The problem

Cloud cost tooling problems

💰

Vendor tax on FinOps

Teams pay AWS for the infra and then pay a second platform fee just to inspect their own bill.

📤

Limited control and customization

When the tool is owned by a vendor, your organization has less control over workflows, reporting, and feature priorities.

🧩

Too many Native tools

CUR, Cost Explorer, Compute Optimizer, Slack alerts, and dashboards usually live in separate workflows.

Differentiation

Pay AWS for compute. Pay nobody else.

Open-source foundation

MIT licensed, extensible, and transparent for teams that want control over FinOps workflows and future roadmap.

Self-hosted by design

Ability to customize the platform, reports, and integrations. Runs entirely inside your AWS account — your data never moves.

Agentic AI

AI is embedded into the workflow to guide decisions, automate tasks, and reduce manual effort.

How we address every problem

✗

Vendor tax on FinOps

Teams pay AWS for compute and then pay a second platform fee — $500–$2,000+/month — just to inspect their own bill.

✓

~$45/month. Total. No subscription.

KostOps runs on Lambda, DynamoDB, Bedrock, and API Gateway inside your account. You only pay your existing AWS bill.

✗

Limited control & customization

Vendor-owned tools lock workflows, reporting, and feature priorities. Your roadmap requests go into a backlog you don't control.

✓

MIT licensed. Fork it. Own it.

Open source and deployed via CDK. Add agent tools, customise dashboards, extend integrations. You own every line of code and the roadmap.

✗

Too many fragmented native tools

CUR, Cost Explorer, Compute Optimizer, Slack alerts, and dashboards all live in separate workflows with no single pane of glass.

✓

One platform. One deploy.

KostOps unifies CUR analytics, AI chat, dashboards, Compute Optimizer, Slack alerts, and automated findings — all from a single CDK deploy, single UI.

See It In Action

Watch the demo

A 5-minute walkthrough: deploy, connect billing data, and start asking questions about your AWS costs.

Product screenshots

Chat UI and QuickSight billing dashboards — all running inside your own AWS account.

KostOps — AI Chat Agent
KostOps AI Chat — ask questions about your AWS spend in plain English

AI Chat Agent

Ask "give me last 4 months of spend by service?" — get a structured breakdown instantly.

KostOps — Billing Summary Dashboard
KostOps Billing Summary — QuickSight-powered invoice spend, blended cost, and charge type breakdown

Billing Summary Dashboard

Invoice spend by account, blended cost trends, and charge type breakdown — all in QuickSight SPICE.

Features

One platform. Zero vendor lock-in.

Everything that used to require 4–5 separate tools — unified in a single CDK deploy inside your own AWS account.

💬

AI Chat Agent

Ask questions in plain English from the web UI or Slack. The agent reasons over your real CUR data using Athena and Cost Explorer — no pre-built reports required.

📊

Cost Dashboards

QuickSight-powered interactive dashboards for billing summary, compute, storage, AI/ML, commitments, and rightsizing. Filter by account, region, and date.

🔍

Automated Findings

Daily scan surfaces idle EC2 instances, unattached EBS volumes, old snapshots, Savings Plan gaps, and rightsizing opportunities — ranked by estimated monthly savings.

⚡

Slack Integration

Daily digest every morning with top savings opportunities. Use /kostops slash command to ask cost questions from any Slack channel.

🏢

Multi-Account

Payer account + unlimited linked accounts. Cross-account IAM role reads CUR data directly — no S3 replication, no data duplication, no extra storage cost.

🔒

Fully Self-Hosted

Deploys entirely into your AWS account via CDK. No SaaS subscription, no data sent to third parties, no vendor lock-in. You own the infrastructure and the data.

Up and running in four steps

No agents to manage, no data pipelines to build. CDK handles everything.

1

Deploy with CDK (~20 min)

Run two commands — one in your payer account, one in your linked account. CDK provisions all infrastructure: Cognito auth, API Gateway, DynamoDB, the AI agent on AgentCore, and a React UI on CloudFront.

# Step 1: Payer account
$ cdk deploy KostOpsPayerStack --context linkedAccountId=123456789012 ...
# Step 2: Linked account
$ cdk deploy --all --context payerAccountId=... --context adminEmail=you@co.com
2

Connect your CUR

KostOps auto-detects your Cost and Usage Report S3 prefix, starts the Glue crawler, and builds the Athena schema — no manual configuration. If CUR isn't enabled, the setup guide walks you through enabling it in 5 minutes.

3

Invite your team

The React UI is live at the CloudFront URL. Admin receives login credentials by email. Add team members via Cognito — no IAM users or roles needed for non-technical stakeholders.

4

Ask questions, get answers

Chat from the web UI or type /kostops in Slack. The agent reads your real CUR data through Athena and Cost Explorer, surfaces savings opportunities, and delivers a daily digest every morning.

Architecture

Your data, your account, your rules

KostOps runs entirely inside your AWS infrastructure. There is no external SaaS service, no webhook to a third-party server, no billing data transmitted outside your account. The only outbound calls are to AWS APIs — Bedrock, Cost Explorer, Athena — which are already in your VPC trust boundary.

  • ✓ Payer CUR data is read in-place (no S3 replication or duplication)
  • ✓ Claude runs via Amazon Bedrock cross-region inference profiles — stays within AWS
  • ✓ Cognito authentication — no third-party auth provider
  • ✓ All secrets stored in SSM Parameter Store SecureString — never in code or env vars
// architecture at a glance
Payer Account
S3 (CUR Parquet) ← billing service writes daily
cross-account-role ← read-only Cost Explorer access
Linked Account (KostOps runs here)
Glue Crawler → reads payer S3 cross-account (no replication)
Athena → queries Glue catalog, 10 GB scan limit
AgentCore → strands-agents + Claude Sonnet via Bedrock
API Gateway → Cognito JWT auth on all endpoints
CloudFront → React SPA (S3 + OAC, no public bucket)
DynamoDB → findings, conversations, integrations
Total AWS cost: ~$43-50/month for 10 accounts

How KostOps compares

The only self-hosted, AI-native FinOps platform in the market.

Capability
KostOps
~$45/mo AWS cost
CloudHealth / Apptio
$500–$2,000+/mo
AWS Cost Explorer
Free (limited)
Spreadsheets
Free
AI chat interface ✅ Full (web + Slack) ❌ ❌ ❌
Self-hosted / your data ✅ Always ❌ SaaS ✅ AWS-native ✅
Slack slash command ✅ /kostops Some tiers ❌ ❌
Automated findings ✅ Daily scan ✅ Limited ❌ Manual
Custom dashboards ⚡ Phase 3 ✅ Limited ✅
CDK / IaC deploy ✅ Single command ❌ SaaS onboarding ✅ Built-in ❌
Remediation workflows ⚡ Phase 3 ✅ Some tiers ❌ ❌

⚡ = Coming in Phase 3 roadmap

Get in touch

Interested in KostOps, have a question, or want to discuss a custom deployment? Send a message and we'll get back to you within 24 hours.

We'll get back to you within 24 hours.