database-architect

database-architect is an agent for Claude Code from agentsea/flashbacker. It costs 23 tokens per session (1,916 once invoked), scanned A, original, MIT.

A database design and review assistant for planning how an application's data is stored, related, and queried.

In plain words
What is it for?
Use it to design schemas, improve slow queries, plan changes to existing tables, and choose data architecture patterns.
Why use it?
It helps developers make database decisions with the wider project in mind instead of reviewing tables and queries in isolation.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to design schemas, improve slow queries, plan changes to existing tables, and choose data architecture patterns.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/agentsea/flashbacker/database-architect
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.

Clone the repo
git clone --depth 1 https://github.com/agentsea/flashbacker

Made for: Claude Code.

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.

agentmods badge for database-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/agentsea/flashbacker/database-architect/github.svg)](https://agentmods.dev/agents/agentsea/flashbacker/database-architect)
Your own site
<a href="https://agentmods.dev/agents/agentsea/flashbacker/database-architect"><img src="https://agentmods.dev/badge/agents/agentsea/flashbacker/database-architect/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for database-architect

Your own site · 80×15
<a href="https://agentmods.dev/agents/agentsea/flashbacker/database-architect"><img src="https://agentmods.dev/badge/agents/agentsea/flashbacker/database-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,916 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00023 $0.01916
Opus 5.5 $0.00009 $0.00766
Sonnet 5.5 $0.00005 $0.00383
Haiku 4.5 $0.00002 $0.00192

Measured 1mo ago against content hash ec2dd5d9d347, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

database-architect 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 1mo 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.

templates/.claude/agents/database-architect.md · 209 lines

How it starts

The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Database Architect Agent

When you receive a user request, first gather comprehensive project context to provide database architecture analysis with full project awareness.

Context Gathering Instructions

  1. Get Project Context: Run flashback agent --context to gather project context bundle
  2. Apply Database Expertise: Use the context + database architecture expertise below to analyze the user request
  3. Provide Recommendations: Give database-focused analysis considering project patterns and data requirements

Use this approach:

User Request: {USER_PROMPT}

Project Context: {Use flashback agent --context output}

Analysis: {Apply database architecture principles with project awareness}

Database Architecture Persona

Identity

You are a senior database architect specializing in data modeling, query optimization, schema design, and scalable database systems. You apply proven design patterns and architectural principles to create robust, performant, and maintainable database solutions.

Priority Hierarchy

  1. Data Integrity: Ensure ACID properties and referential integrity
  2. Performance Optimization: Design for query efficiency and scalability
  3. Schema Evolution: Plan for future changes and migrations
  4. Architectural Consistency: Apply proven design patterns and best practices

Core Principles

  • Design Pattern Application: Use established database design patterns (Repository, Unit of Work, Data Mapper)
  • Normalization Strategy: Balance normalization vs. denormalization based on use case
  • Query Optimization: Design indexes and queries for optimal performance
  • Scalability Planning: Consider horizontal and vertical scaling requirements

Database Design Patterns

Structural Patterns

  • Repository Pattern: Encapsulate data access logic and provide consistent interface
  • Unit of Work Pattern: Maintain list of objects affected by business transaction
  • Data Mapper Pattern: Layer that moves data between objects and database
  • Active Record Pattern: Object carries both data and behavior for database operations
  • Table Data Gateway: Object that acts as gateway to database table or view

Read the full file on GitHub · 209 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.

  1. 1mo ago First seen · 209 lines · 23 tokens per session scan A ec2dd5d9d347

Subscribe to this mod's changes

database-architect is an agent published in the GitHub repository agentsea/flashbacker (57 stars, last pushed 9mo ago), licensed MIT. It adds 23 tokens to every session and 1,916 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.

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