Aws/cost Estimate

@webframp/aws/cost-estimatev2026.04.22.1· 8d agoMODELS

01README

Calculate AWS infrastructure costs from inventory data or planned specs.

Authentication

Uses the default AWS credential chain. The Pricing API is public data but requires valid AWS credentials.

Usage

From Inventory (existing resources)

First gather inventory using @webframp/aws/inventory, then estimate costs:

# Create models
swamp model create @webframp/aws/inventory aws-inventory --global-arg region=us-east-1
swamp model create @webframp/aws/cost-estimate cost-est

# Gather inventory
swamp model method run aws-inventory list_ec2

# Get inventory data
EC2_DATA=$(swamp data get aws-inventory ec2-us-east-1 --json | jq '.data.resources')

# Estimate costs (pass inventory as JSON)
swamp model method run cost-est estimate_ec2 \
  --input "inventory=${EC2_DATA}"

From Spec (planned resources)

Estimate costs before deployment:

swamp model method run cost-est estimate_from_spec \
  --input 'ec2Instances=[{"name":"web","instanceType":"t3.medium","count":3}]' \
  --input 'rdsInstances=[{"name":"db","dbInstanceClass":"db.t3.medium","engine":"postgres","storageGb":100}]'

Pricing Notes

Uses AWS Pricing API for real-time rates
Assumes On-Demand pricing (no Reserved Instances or Savings Plans)
EC2: Includes compute only (no EBS, transfer)
RDS: Includes compute + storage (gp2 rate default)

02Models1

@webframp/aws/cost-estimatev2026.03.30.4aws/cost_estimate.ts

fn estimate_ec2(instanceId: string, instanceType: string, availabilityZone: string, platform?: string, tags?: record)

Estimate EC2 costs from inventory data

Argument	Type	Required
instanceId	string	yes
instanceType	string	yes
availabilityZone	string	yes
platform?	string	no
tags?	record	no

fn estimate_rds(dbInstanceId: string, dbInstanceClass: string, engine: string, availabilityZone?: string, multiAz: boolean, allocatedStorage: number)

Estimate RDS costs from inventory data

Argument	Type	Required
dbInstanceId	string	yes
dbInstanceClass	string	yes
engine	string	yes
availabilityZone?	string	no
multiAz	boolean	yes
allocatedStorage	number	yes

fn estimate_from_spec(name: string, instanceType: string, region: string, count: number, name: string, dbInstanceClass: string, engine: string, region: string, multiAz: boolean, storageGb: number)

Estimate costs for planned infrastructure (pre-deployment)

Argument	Type	Required	Description
name	string	yes	Instance identifier/name
instanceType	string	yes	EC2 instance type
region	string	yes
count	number	yes	Number of instances
name	string	yes	DB instance identifier
dbInstanceClass	string	yes	RDS instance class
engine	string	yes	Database engine
region	string	yes
multiAz	boolean	yes
storageGb	number	yes

Resources

estimate(1d)— Cost estimate for AWS resources

03Previous Versions6

2026.04.13.1Apr 13, 2026

2026.03.31.1Mar 31, 2026

2026.03.30.4Mar 31, 2026

2026.03.30.3Mar 30, 2026

2026.03.30.2Mar 30, 2026

2026.03.30.1Mar 30, 2026

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Repository

https://github.com/webframp/swamp-extensions

05Platforms

linux · x86_64 linux · aarch64 macOS · x86_64 macOS · aarch64

06Labels

#aws #cost #pricing #finops #estimate #cloud