# iamakashtechie/ai-agent-crud-todo architecture

> Architecture diagram of the GitHub repository iamakashtechie/ai-agent-crud-todo, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-14). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/iamakashtechie/ai-agent-crud-todo
- Repository: https://github.com/iamakashtechie/ai-agent-crud-todo

## Overview

This is a terminal-based AI todo agent. A user enters natural-language requests; the ReAct loop in index.js sends conversation history to an OpenAI-compatible Gemini endpoint, dispatches requested tools, returns database results as observations, and prints the final answer. The tools implement list, create, search, and delete against PostgreSQL through Drizzle. README documents OpenRouter as an alternative and explains that updates are simulated with search, delete, and recreate. Source excerpts show the loop and database operations; other relationships are omitted where wiring was not shown.

Main entry points: [`index.js`](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js) (ReAct loop), [`db/index.js`](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/db/index.js) (Drizzle client), [`db/schema.js`](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/db/schema.js) (Todo schema)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_agent["Agent interaction"]
  node_agent["ReAct loop<br/>[index.js]"]
  node_llm["LLM provider"]
end

subgraph group_tools["Todo operations"]
  node_list["List todos<br/>[index.js]"]
  node_create["Create todo<br/>[index.js]"]
  node_search["Search todos<br/>[index.js]"]
  node_delete["Delete todo<br/>[index.js]"]
end

subgraph group_data["Persistence"]
  node_dbclient["Drizzle client<br/>[index.js]"]
  node_schema["Todo schema<br/>[schema.js]"]
  node_postgres[("PostgreSQL")]
end

node_user(("User"))

node_user -->|"enters request"| node_agent
node_agent -->|"sends prompt"| node_llm
node_llm -->|"returns response"| node_agent
node_agent -->|"dispatches tool"| node_list
node_agent -->|"dispatches tool"| node_create
node_agent -->|"dispatches tool"| node_search
node_agent -->|"dispatches tool"| node_delete
node_agent -->|"prints answer"| node_user
node_list -->|"queries"| node_dbclient
node_create -->|"inserts row"| node_dbclient
node_search -->|"queries"| node_dbclient
node_delete -->|"deletes row"| node_dbclient
node_list -->|"uses table"| node_schema
node_create -->|"uses table"| node_schema
node_search -->|"uses table"| node_schema
node_delete -->|"uses table"| node_schema
node_dbclient -->|"connects to"| node_postgres

click node_agent "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js"
click node_list "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js"
click node_create "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js"
click node_search "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js"
click node_delete "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js"
click node_dbclient "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/db/index.js"
click node_schema "https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/db/schema.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_agent,node_llm,node_user toneBlue
class node_list,node_create,node_search,node_delete toneAmber
class node_dbclient,node_schema,node_postgres toneMint
```

## Components

### Agent interaction

- [ReAct loop](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js): `index.js`
- **LLM provider**

### Todo operations

- [List todos](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js): `index.js`
- [Create todo](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js): `index.js`
- [Search todos](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js): `index.js`
- [Delete todo](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/index.js): `index.js`

### Persistence

- [Drizzle client](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/db/index.js): `db/index.js`
- [Todo schema](https://github.com/iamakashtechie/ai-agent-crud-todo/blob/main/db/schema.js): `db/schema.js`
- **PostgreSQL**

### Other components

- **User**

## Connections

- User → ReAct loop: enters request (evidence: `index.js`)
- ReAct loop → LLM provider: sends prompt (evidence: `index.js`)
- LLM provider → ReAct loop: returns response (evidence: `index.js`)
- ReAct loop → List todos: dispatches tool (evidence: `index.js`)
- ReAct loop → Create todo: dispatches tool (evidence: `index.js`)
- ReAct loop → Search todos: dispatches tool (evidence: `index.js`)
- ReAct loop → Delete todo: dispatches tool (evidence: `index.js`)
- ReAct loop → User: prints answer (evidence: `index.js`)
- List todos → Drizzle client: queries (evidence: `index.js`)
- Create todo → Drizzle client: inserts row (evidence: `index.js`)
- Search todos → Drizzle client: queries (evidence: `index.js`)
- Delete todo → Drizzle client: deletes row (evidence: `index.js`)
- List todos → Todo schema: uses table (evidence: `index.js`)
- Create todo → Todo schema: uses table (evidence: `index.js`)
- Search todos → Todo schema: uses table (evidence: `index.js`)
- Delete todo → Todo schema: uses table (evidence: `index.js`)
- Drizzle client → PostgreSQL: connects to (evidence: `db/index.js`)