What is aws-dynamodb?

A guide for designing DynamoDB databases, AWS's cloud database for applications that need fast access at scale.

It helps choose partition and sort keys, plan indexes, use one-table designs when suitable, support transactions and change streams, and avoid inefficient full-table scans.

It helps prevent slow or expensive data access by designing the database around the searches and lookups the application actually needs.

aws-dynamodb — Skill for Claude Code and Codex by eliecer2000

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add eliecer2000/kiro-bootstrap --skill aws-dynamodb

Clone the repo

git clone --depth 1 https://github.com/eliecer2000/kiro-bootstrap

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/eliecer2000/kiro-bootstrap/aws-dynamodb.svg)](https://agentmods.dev/skills/eliecer2000/kiro-bootstrap/aws-dynamodb)

Your own site

<a href="https://agentmods.dev/skills/eliecer2000/kiro-bootstrap/aws-dynamodb"><img src="https://agentmods.dev/badge/skills/eliecer2000/kiro-bootstrap/aws-dynamodb.svg" alt="Measured on agentmods" height="20"></a>

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,820 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00038	$0.01820
Opus 5	$0.00019	$0.00910
Sonnet 5	$0.00008	$0.00364
Haiku 4.5	$0.00004	$0.00182

Measured 8d ago against content hash c9d1bcc0bcf3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

aws-dynamodb scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/aws-dynamodb/SKILL.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS DynamoDB

Skill para modelado de datos DynamoDB, access patterns, diseño de PK/SK, GSIs, LSIs, single-table design, transacciones, costos, DynamoDB Streams y mejores prácticas de rendimiento.

Principios fundamentales

Modelar datos por access patterns, no por entidades. Primero definir las queries, luego diseñar la tabla.
Single-table design cuando los access patterns están bien definidos y el equipo tiene experiencia. Multi-table cuando la simplicidad es prioridad.
Nunca hacer Scan como patrón principal de lectura. Si necesitas Scan frecuente, el modelo de datos está mal diseñado.
Partition key debe distribuir la carga uniformemente. Evitar hot partitions.
Diseñar para el caso de uso más frecuente, optimizar los demás con GSIs.

Proceso de modelado de datos

Listar todas las entidades del dominio.
Definir todos los access patterns (queries que la aplicación necesita).
Diseñar PK/SK para cubrir los access patterns principales.
Agregar GSIs para access patterns secundarios.
Documentar el modelo en una tabla de access patterns.

Tabla de access patterns (ejemplo e-commerce)

Access Pattern	PK	SK	GSI
Obtener usuario por ID	`USER#<userId>`	`PROFILE`	-
Listar pedidos de usuario	`USER#<userId>`	`ORDER#<timestamp>`	-
Obtener pedido por ID	`ORDER#<orderId>`	`METADATA`	-
Listar items de pedido	`ORDER#<orderId>`	`ITEM#<itemId>`	-
Buscar pedidos por estado	`ORDER#<orderId>`	`METADATA`	GSI1: PK=`STATUS#<status>`, SK=`<timestamp>`
Obtener producto por SKU	`PRODUCT#<sku>`	`METADATA`	-

Patrones de PK/SK

Prefijos de tipo (recomendado)

PK: USER#12345          SK: PROFILE
PK: USER#12345          SK: ORDER#2024-01-15T10:30:00Z
PK: ORDER#abc-def       SK: METADATA
PK: ORDER#abc-def       SK: ITEM#001

Composite sort key para queries flexibles

PK: TENANT#acme         SK: USER#active#2024-01-15
                        → begins_with(SK, "USER#active") → usuarios activos
                        → begins_with(SK, "USER#")        → todos los usuarios

Read the full file on GitHub · 188 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

8d ago First seen · 188 lines · 38 tokens per session scan A c9d1bcc0bcf3

Subscribe to this mod's changes

aws-dynamodb is a skill published in the GitHub repository eliecer2000/kiro-bootstrap (9 stars, last pushed 5mo ago), licensed MIT. It adds 38 tokens to every session and 1,820 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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