Cloud · 1 skill

AWS MCP and Claude skills

Pull daily cost by service and account, cost anomalies, budgets and forecasts from AWS Cost Explorer, and report what you spent and what jumped.

Connect AWS to your agent (MCP)

AWS MCP Server, AWS's managed remote server, at https://aws-mcp.us-east-1.api.aws/mcp (other Regions follow the same pattern, such as aws-mcp.eu-west-1.api.aws). In Claude Code, run claude mcp add aws-mcp https://aws-mcp.us-east-1.api.aws/mcp --transport http and sign in through AWS Sign-in; your IAM user or role needs the AWSMCPSignInOAuthAccessPolicy managed policy for that step. Cursor takes the URL with ?oauth=initialize appended, and Codex uses codex mcp add aws-mcp --url https://aws-mcp.us-east-1.api.aws/mcp?oauth=initialize (setup).
The same server through the MCP Proxy for AWS. With credentials from aws login or an SSO profile, run it as uvx mcp-proxy-for-aws-cli@latest https://aws-mcp.us-east-1.api.aws/mcp --read-only. The proxy signs each request with SigV4, and --read-only hides the tools that may need write permissions. AWS also publishes an open-source Billing and Cost Management MCP server (uvx awslabs.billing-cost-management-mcp-server@latest) focused on Cost Explorer, budgets, anomalies and Savings Plans.
AWS CLI or SDK. aws ce get-cost-and-usage --time-period Start=2026-10-01,End=2026-10-16 --granularity DAILY --metrics UnblendedCost --group-by Type=DIMENSION,Key=SERVICE returns the same data. The skill reads AWS_PROFILE and AWS_REGION; Cost Explorer itself is served from us-east-1.

Run reports under a role that can only read billing data, for example one allowed ce:GetCostAndUsage, ce:GetCostForecast, ce:GetAnomalies and budgets:ViewBudget, or the AWSBillingReadOnlyAccess managed policy: the MCP server can do no more than that role allows.

1 AWS skill

AWS cost anomaly alert

Every morning: new AWS cost anomalies with the service, account, region and dollars above expected, and a question about who owns each one.

DevOpsEvery day at 9:00Asks you

What agents do with AWS

Cost reports start with Cost Explorer's GetCostAndUsage, which takes a TimePeriod, a Granularity (DAILY or MONTHLY), metrics such as UnblendedCost, AmortizedCost or NetUnblendedCost, and up to two GroupBy keys like SERVICE, LINKED_ACCOUNT, REGION or a cost allocation tag. GetCostForecast projects the rest of the month, Cost Anomaly Detection's GetAnomalies returns anomalies with their root causes and dollar impact (a cost monitor has to exist first), and AWS Budgets' DescribeBudgets gives spend against each budget. For the operational side, CloudWatch DescribeAlarms with StateValue=ALARM lists alarms that are firing. Each Cost Explorer API request costs $0.01, and yesterday's costs can still grow after the first refresh, so daily reports mark the latest day as partial.

Finance and platform teams schedule a daily cost report by service against the same day last week, an anomaly alert that names the service, account and Region behind a jump, month-to-date spend against forecast and budget, and a weekly list of the linked accounts whose spend grew fastest.

aws.amazon.com

Teams that use these

Your AWS numbers, on one board with everything else

Skills are free to use with any agent. Briefkin is where their results land: one board for every report, number and question your agents send, with a ping when something needs you.

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