aws-billing-and-cost-management

Name: aws-billing-and-cost-management
Author: aws

3.3kinstalls190forks

How to install aws-billing-and-cost-management?

aws/agent-toolkit-for-aws/aws-billing-and-cost-management

$npx -y skills add aws/agent-toolkit-for-aws --skill aws-billing-and-cost-management

Installs into the current project.

Summary

Analyze AWS costs, find savings, manage budgets, evaluate Savings Plans and Reserved Instances, right-size EC2/Lambda/RDS/EBS with Compute Optimizer, look up service pricing, query CUR with Athena, detect cost anomalies, scope costs to billing views, and monitor Free Tier usage.

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SKILL.md

1	# Billing and Cost Management
2
3	## Overview
4
5	Analyze, optimize, and manage AWS costs. This skill encodes domain expertise from AWS's cost management products — gotchas, correct API usage patterns, and optimization workflows that models frequently get wrong.
6
7	## Usage
8
9	Use this skill when:
10
11	- Analyzing AWS spending, cost trends, or cost breakdowns
12	- Setting up or managing budget alerts
13	- Evaluating Savings Plans or Reserved Instance purchases
14	- Right-sizing EC2, Lambda, RDS, or EBS resources
15	- Looking up AWS service pricing
16	- Running cost audits or investigating cost spikes
17	- Querying CUR data with Athena
18	- Scoping cost analysis to a specific billing view
19	- Checking Free Tier usage
20
21	## Core Concepts
22
23	- Cost Explorer — query cost/usage data by service, account, tag, or time range
24	- Budgets — set spending thresholds with alerts; supports billing view scoping
25	- Billing Views — scope cost data to a subset of billing (custom view, billing group, or primary)
26	- Compute Optimizer — right-sizing recommendations for EC2, Lambda, EBS, RDS
27	- Cost Optimization Hub — aggregated savings recommendations across services
28	- Savings Plans / Reserved Instances — commitment-based discounts
29	- CUR 2.0 — detailed line-item billing data queryable via Athena
30
31	Recommended setup: Use the AWS MCP server for sandboxed execution, audit logging, and enterprise controls. See: https://docs.aws.amazon.com/aws-mcp/
32
33	Without AWS MCP: All commands use standard AWS CLI syntax and work with any agent that has CLI access.
34
35	## Critical Rule: Always Check the Current Date
36
37	Before making ANY Cost Explorer, Budgets, or Savings Plans API call, you MUST determine the current date. Use a tool to get the current date and time — do NOT assume or guess the year. LLMs frequently default to dates from their training data instead of the actual current date, producing analyses of stale data that appear correct but are completely wrong.
38
39	## Critical Rule: Deterministic Calculations
40
41	You MUST NEVER perform numerical calculations (sums, averages, percentages, comparisons, counts, min/max) by reasoning in your response. LLM arithmetic is unreliable and produces wrong answers on cost data.
42
43	You MUST ALWAYS use a script or calculator tool for any math on data returned from API calls. Write a Python script that performs the calculation and prints the result. If the AWS MCP server's `run_script` tool is available, use it. Otherwise, run the script locally.
44
45	Read `references/deterministic-calculations.md` for patterns and examples.
46
47	## Decision Guide
48
49	\| Question \| Tool \| Reference \|
50	\|----------\|------\|-----------\|
51	\| What am I spending? Where are costs going up? \| Cost Explorer \| `references/cost-explorer.md` \|
52	\| How much does a service cost? \| Price List API \| `references/pricing-lookup.md` \|
53	\| Where can I save money? (start here) \| Cost Optimization Hub \| `references/cost-optimization-hub.md` \|
54	\| Should I buy Savings Plans? \| CE SP Recommendations \| `references/savings-plans.md` \|
55	\| Should I buy Reserved Instances? \| CE RI Recommendations \| `references/reserved-instances.md` \|
56	\| Deep-dive on a specific EC2/Lambda/EBS/RDS rec? \| Compute Optimizer \| `references/ec2-rightsizing.md`, `references/lambda-optimization.md`, `references/rds-optimization.md`, `references/ebs-optimization.md` \|
57	\| How do I set up budget alerts? \| Budgets \| `references/budgets.md` \|
58	\| What's causing a cost spike? \| Cost Anomaly Detection \| `references/cost-explorer.md` \|
59	\| Am I within Free Tier? \| Free Tier API \| `references/free-tier.md` \|
60	\| How do I reduce my bill? \| Cost Audit workflow \| `references/cost-audit.md` \|
61	\| How do I query detailed billing data? \| CUR 2.0 + Athena \| `references/cur-athena.md` \|
62	\| How do I optimize specific services? \| Per-service patterns \| `references/service-optimization.md` \|
63	\| How do I scope costs to a billing view? \| Billing Views \| See [Billing Views](#billing-views) below \|
64
65	## Common Tasks
66
67	### Analyze costs by service
68
69	```bash
70	aws ce get-cost-and-usage \
71	--time-period Start=2026-03-01,End=2026-04-01 \
72	--granularity MONTHLY \
73	--metrics UnblendedCost \
74	--group-by Type=DIMENSION,Key=SERVICE
75	```
76
77	Default to `UnblendedCost`. Exclude Credits/Refunds with `--filter '{"Not":{"Dimensions":{"Key":"RECORD_TYPE","Values":["Credit","Refund"]}}}'`. End date is exclusive.
78
79	### Run a cost audit
80	Read `references/cost-audit.md` for the full 7-step workflow:

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aws-billing-and-cost-management

3.3kinstalls190forks

View on GitHub

How to install aws-billing-and-cost-management?

aws/agent-toolkit-for-aws/aws-billing-and-cost-management

$npx -y skills add aws/agent-toolkit-for-aws --skill aws-billing-and-cost-management

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Billing and Cost Management
2
3	## Overview
4
5	Analyze, optimize, and manage AWS costs. This skill encodes domain expertise from AWS's cost management products — gotchas, correct API usage patterns, and optimization workflows that models frequently get wrong.
6
7	## Usage
8
9	Use this skill when:
10
11	- Analyzing AWS spending, cost trends, or cost breakdowns
12	- Setting up or managing budget alerts
13	- Evaluating Savings Plans or Reserved Instance purchases
14	- Right-sizing EC2, Lambda, RDS, or EBS resources
15	- Looking up AWS service pricing
16	- Running cost audits or investigating cost spikes
17	- Querying CUR data with Athena
18	- Scoping cost analysis to a specific billing view
19	- Checking Free Tier usage
20
21	## Core Concepts
22
23	- Cost Explorer — query cost/usage data by service, account, tag, or time range
24	- Budgets — set spending thresholds with alerts; supports billing view scoping
25	- Billing Views — scope cost data to a subset of billing (custom view, billing group, or primary)
26	- Compute Optimizer — right-sizing recommendations for EC2, Lambda, EBS, RDS
27	- Cost Optimization Hub — aggregated savings recommendations across services
28	- Savings Plans / Reserved Instances — commitment-based discounts
29	- CUR 2.0 — detailed line-item billing data queryable via Athena
30
31	Recommended setup: Use the AWS MCP server for sandboxed execution, audit logging, and enterprise controls. See: https://docs.aws.amazon.com/aws-mcp/
32
33	Without AWS MCP: All commands use standard AWS CLI syntax and work with any agent that has CLI access.
34
35	## Critical Rule: Always Check the Current Date
36
37	Before making ANY Cost Explorer, Budgets, or Savings Plans API call, you MUST determine the current date. Use a tool to get the current date and time — do NOT assume or guess the year. LLMs frequently default to dates from their training data instead of the actual current date, producing analyses of stale data that appear correct but are completely wrong.
38
39	## Critical Rule: Deterministic Calculations
40
41	You MUST NEVER perform numerical calculations (sums, averages, percentages, comparisons, counts, min/max) by reasoning in your response. LLM arithmetic is unreliable and produces wrong answers on cost data.
42
43	You MUST ALWAYS use a script or calculator tool for any math on data returned from API calls. Write a Python script that performs the calculation and prints the result. If the AWS MCP server's `run_script` tool is available, use it. Otherwise, run the script locally.
44
45	Read `references/deterministic-calculations.md` for patterns and examples.
46
47	## Decision Guide
48
49	\| Question \| Tool \| Reference \|
50	\|----------\|------\|-----------\|
51	\| What am I spending? Where are costs going up? \| Cost Explorer \| `references/cost-explorer.md` \|
52	\| How much does a service cost? \| Price List API \| `references/pricing-lookup.md` \|
53	\| Where can I save money? (start here) \| Cost Optimization Hub \| `references/cost-optimization-hub.md` \|
54	\| Should I buy Savings Plans? \| CE SP Recommendations \| `references/savings-plans.md` \|
55	\| Should I buy Reserved Instances? \| CE RI Recommendations \| `references/reserved-instances.md` \|
56	\| Deep-dive on a specific EC2/Lambda/EBS/RDS rec? \| Compute Optimizer \| `references/ec2-rightsizing.md`, `references/lambda-optimization.md`, `references/rds-optimization.md`, `references/ebs-optimization.md` \|
57	\| How do I set up budget alerts? \| Budgets \| `references/budgets.md` \|
58	\| What's causing a cost spike? \| Cost Anomaly Detection \| `references/cost-explorer.md` \|
59	\| Am I within Free Tier? \| Free Tier API \| `references/free-tier.md` \|
60	\| How do I reduce my bill? \| Cost Audit workflow \| `references/cost-audit.md` \|
61	\| How do I query detailed billing data? \| CUR 2.0 + Athena \| `references/cur-athena.md` \|
62	\| How do I optimize specific services? \| Per-service patterns \| `references/service-optimization.md` \|
63	\| How do I scope costs to a billing view? \| Billing Views \| See [Billing Views](#billing-views) below \|
64
65	## Common Tasks
66
67	### Analyze costs by service
68
69	```bash
70	aws ce get-cost-and-usage \
71	--time-period Start=2026-03-01,End=2026-04-01 \
72	--granularity MONTHLY \
73	--metrics UnblendedCost \
74	--group-by Type=DIMENSION,Key=SERVICE
75	```
76
77	Default to `UnblendedCost`. Exclude Credits/Refunds with `--filter '{"Not":{"Dimensions":{"Key":"RECORD_TYPE","Values":["Credit","Refund"]}}}'`. End date is exclusive.
78
79	### Run a cost audit
80	Read `references/cost-audit.md` for the full 7-step workflow:

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Type