AWS Cloudformation Dynamodb

What it does

When your agent uses it

• Creating DynamoDB tables with CloudFormation
• Configuring primary keys
• Local/global secondary indexes
• Capacity modes (on-demand/provisioned)

Example prompts

• “Use the aws-cloudformation-dynamodb skill to provide AWS CloudFormation patterns for DynamoDB tables, GSIs, LSIs, auto-scaling, and streams”
• “/aws-cloudformation-dynamodb”

Requirements

• Pre-approved tools (allowed-tools): Read, Write, Bash

Workflow steps

12 steps, taken from the first numbered list in SKILL.md.

1. 1Define Table Parameters: Specify table name and billing mode
2. 2Configure Primary Key: Set partition key and optional sort key
3. 3Add Secondary Indexes: Create GSIs for alternative access patterns
4. 4Configure Encryption: Enable encryption using KMS keys
5. 5Set Up TTL: Define timestamp attribute for automatic deletion
6. 6Enable Streams: Configure stream for change data capture
7. 7Add Auto Scaling: Implement Application Auto Scaling for provisioned capacity
8. 8Create Backup: Enable point-in-time recovery
9. 9Validate Template: Run aws cloudformation validate-template before deployment
10. 10Deploy Stack: Use aws cloudformation create-stack or update-stack
11. 11Monitor Events: Check aws cloudformation describe-stack-events for failures or ROLLBACK status
12. 12Handle Rollback: On failure, review events for resource errors, fix the template, and re-deploy

What it can do on your machine

Read from SKILL.md and the folder at commit fe73fb3. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Write
  • Bash

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • aws

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use aws, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

AWS Cloudformation Dynamodb loads about 2k tokens when it runs, and up to ~14k if it reads all its reference files. Until then it costs about 107 tokens; SKILL.md has 595 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~107

When it runs · the whole SKILL.md, loaded when a task matches

~2k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~14k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Read, Write, Bash

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from giuseppe-trisciuoglio/developer-kit at commit fe73fb3, republished under its MIT licence (© giuseppe-trisciuoglio). 595 words, ~1,953 tokens.

name

aws-cloudformation-dynamodb

description

Provides AWS CloudFormation patterns for DynamoDB tables, GSIs, LSIs, auto-scaling, and streams. Use when creating DynamoDB tables with CloudFormation, configuring primary keys, local/global secondary indexes, capacity modes (on-demand/provisioned), point-in-time recovery, encryption, TTL, and implementing template structure with Parameters, Outputs, Mappings, Conditions, cross-stack references.

allowed-tools

Read, Write, Bash

DynamoDBTable:
  Type: AWS::DynamoDB::Table
  Properties:
    TableName: !Sub "${AWS::StackName}-table"
    BillingMode: PAY_PER_REQUEST
    AttributeDefinitions:
      - AttributeName: pk
        AttributeType: S
    KeySchema:
      - AttributeName: pk
        KeyType: HASH

DynamoDBTable:
  Type: AWS::DynamoDB::Table
  Properties:
    TableName: !Sub "${AWS::StackName}-table"
    BillingMode: PAY_PER_REQUEST
    AttributeDefinitions:
      - AttributeName: pk
        AttributeType: S
      - AttributeName: gsi-pk
        AttributeType: S
    KeySchema:
      - AttributeName: pk
        KeyType: HASH
    GlobalSecondaryIndexes:
      - IndexName: gsi-index
        KeySchema:
          - AttributeName: gsi-pk
            KeyType: HASH
        Projection:
          ProjectionType: ALL

SessionTable:
  Type: AWS::DynamoDB::Table
  Properties:
    TableName: !Sub "${AWS::StackName}-sessions"
    BillingMode: PAY_PER_REQUEST
    AttributeDefinitions:
      - AttributeName: sessionId
        AttributeType: S
    KeySchema:
      - AttributeName: sessionId
        KeyType: HASH
    TimeToLiveSpecification:
      AttributeName: expiresAt
      Enabled: true

ScalableTarget:
  Type: AWS::ApplicationAutoScaling::ScalableTarget
  Properties:
    MaxCapacity: 100
    MinCapacity: 5
    ResourceId: !Sub "table/${DynamoDBTable}"
    RoleARN: !GetAtt AutoScalingRole.Arn
    ScalableDimension: dynamodb:table:ReadCapacityUnits
    ServiceNamespace: dynamodb

AWSTemplateFormatVersion: 2010-09-09
Description: DynamoDB table with GSI and auto-scaling

Parameters:
  TableName:
    Type: String
    Default: my-table
  BillingMode:
    Type: String
    Default: PAY_PER_REQUEST

Resources:
  DynamoDBTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: !Ref TableName
      BillingMode: !Ref BillingMode

Outputs:
  TableName:
    Value: !Ref DynamoDBTable
  TableArn:
    Value: !GetAtt DynamoDBTable.Arn

© giuseppe-trisciuoglio, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (references) in plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-dynamodb of giuseppe-trisciuoglio/developer-kit.

• SKILL.md
• references/advanced-configuration.md
• references/complete-examples.md
• references/examples.md
• references/reference.md

Open the folder on GitHubat commit fe73fb3