# surya-moorthy/llm-gateway-ai architecture

> Architecture diagram of the GitHub repository surya-moorthy/llm-gateway-ai, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-08-12). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/surya-moorthy/llm-gateway-ai
- Repository: https://github.com/surya-moorthy/llm-gateway-ai

## Overview

#### Purpose and entry point

This is a small Python package for making basic AI chat API calls through a gateway abstraction. The executable application entry point is `src/basic_ai_api_call/main.py`; package initialization is in `src/basic_ai_api_call/__init__.py`.

#### Application orchestration

`src/basic_ai_api_call/main.py` coordinates runtime startup: it obtains configuration, constructs or invokes the gateway client, and drives the chat-call workflow. It is the boundary between command/application execution and reusable gateway code.

#### Gateway client boundary

`src/basic_ai_api_call/gateway/client.py` is the likely transport-facing client layer. It centralizes communication with the external AI API so application code does not directly manage request mechanics, authentication, or provider interaction.

`src/basic_ai_api_call/gateway/chat.py` represents the chat-specific API operation or domain interface. It separates chat request/response behavior from generic client setup and makes chat the primary external capability exposed by the gateway.

#### Configuration and secrets

`src/basic_ai_api_call/gateway/config.py` owns runtime configuration needed by the API client, likely including endpoint, model, and credential settings. `.env.example` documents the expected environment-variable contract; actual secrets should remain outside the repository.

The configuration boundary flows into `client.py` and/or `chat.py`, keeping environment-dependent values out of `main.py` and API-operation logic.

#### Logging and operational visibility

`src/basic_ai_api_call/gateway/logger.py` provides the gateway’s logging setup or logging interface. Gateway execution should route operational events and failures through this module rather than embedding logging policy in chat or client code.

#### Primary flow

1. Runtime begins in `src/basic_ai_api_call/main.py`.
2. Configuration is loaded through `src/basic_ai_api_call/gateway/config.py`.
3. The chat operation in `src/basic_ai_api_call/gateway/chat.py` uses the API client in `src/basic_ai_api_call/gateway/client.py`.
4. The client crosses the external-service boundary to an AI/chat API.
5. Logging from `src/basic_ai_api_call/gateway/logger.py` records execution and failures; results return to the main application layer.

#### Runtime and dependency model

The project targets Python, with the required version indicated by `.python-version`. Dependency and packaging metadata are defined in `pyproject.toml`, while `uv.lock` pins the resolved dependency graph. The material external dependency is an AI API reachable through the gateway client; credentials/configuration are supplied via environment variables rather than source-controlled files.

Main entry points: [`src/basic_ai_api_call/gateway/client.py`](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/client.py) (Gateway client), [`src/basic_ai_api_call/main.py`](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/main.py) (Runtime entry point), [`src/basic_ai_api_call/gateway/chat.py`](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/chat.py) (Chat operation), [`src/basic_ai_api_call/gateway/config.py`](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/config.py) (Configuration)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_app["Application"]
  node_main["Runtime entry point<br/>Python module<br/>[main.py]"]
  node_package["Package initialization<br/>Python package<br/>[__init__.py]"]
end

subgraph group_gateway["Gateway"]
  node_config["Configuration<br/>config loader<br/>[config.py]"]
  node_chat["Chat operation<br/>chat API interface<br/>[chat.py]"]
  node_client["Gateway client<br/>API client<br/>[client.py]"]
  node_logger["Gateway logging<br/>logging interface<br/>[logger.py]"]
end

subgraph group_runtime["Runtime Contract"]
  node_env_example["Environment contract<br/>environment template<br/>[.env.example]"]
  node_environment["Runtime environment<br/>secret/config source"]
  node_python_version["Python version<br/>runtime version<br/>[.python-version]"]
  node_pyproject["Package metadata<br/>build metadata<br/>[pyproject.toml]"]
  node_uv_lock["Resolved dependencies<br/>dependency lockfile<br/>[uv.lock]"]
end

node_ai_api{{"External AI chat API<br/>external service"}}

node_main -->|"loads"| node_config
node_main -->|"invokes"| node_chat
node_chat -->|"uses"| node_client
node_config -->|"configures"| node_client
node_client -->|"API requests"| node_ai_api
node_ai_api -->|"chat responses"| node_client
node_client -->|"logs events and failures"| node_logger
node_chat -->|"logs operation events"| node_logger
node_client -->|"returns chat result"| node_main
node_env_example -.->|"documents variables"| node_environment
node_environment -->|"supplies settings"| node_config
node_python_version -.->|"selects runtime"| node_main
node_pyproject -.->|"packages application"| node_main
node_uv_lock -.->|"pins dependencies"| node_pyproject

click node_main "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/main.py"
click node_package "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/__init__.py"
click node_config "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/config.py"
click node_chat "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/chat.py"
click node_client "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/client.py"
click node_logger "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/logger.py"
click node_env_example "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/.env.example"
click node_python_version "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/.python-version"
click node_pyproject "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/pyproject.toml"
click node_uv_lock "https://github.com/surya-moorthy/llm-gateway-ai/blob/main/uv.lock"

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_main,node_package toneBlue
class node_config,node_chat,node_client,node_logger toneAmber
class node_env_example,node_environment,node_python_version,node_pyproject,node_uv_lock toneMint
class node_ai_api toneNeutral
```

## Components

### Application

- [Runtime entry point](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/main.py): Python module · Coordinates configuration and chat workflow. · `src/basic_ai_api_call/main.py`
- [Package initialization](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/__init__.py): Python package · `src/basic_ai_api_call/__init__.py`

### Gateway

Reusable AI API boundary.

- [Configuration](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/config.py): config loader · Supplies endpoint, model, and credentials. · `src/basic_ai_api_call/gateway/config.py`
- [Chat operation](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/chat.py): chat API interface · Encapsulates chat request and response behavior. · `src/basic_ai_api_call/gateway/chat.py`
- [Gateway client](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/client.py): API client · Centralizes provider communication and request mechanics. · `src/basic_ai_api_call/gateway/client.py`
- [Gateway logging](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/src/basic_ai_api_call/gateway/logger.py): logging interface · Records gateway execution and failures. · `src/basic_ai_api_call/gateway/logger.py`

### Runtime Contract

- [Environment contract](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/.env.example): environment template · Documents required environment variables. · `.env.example`
- **Runtime environment**: secret/config source · Provides non-versioned credentials and settings.
- [Python version](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/.python-version): runtime version · `.python-version`
- [Package metadata](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/pyproject.toml): build metadata · Defines packaging and dependencies. · `pyproject.toml`
- [Resolved dependencies](https://github.com/surya-moorthy/llm-gateway-ai/blob/main/uv.lock): dependency lockfile · `uv.lock`

### Other components

- **External AI chat API**: external service

## Connections

- Runtime entry point → Configuration: loads
- Runtime entry point → Chat operation: invokes
- Chat operation → Gateway client: uses
- Configuration → Gateway client: configures
- Gateway client → External AI chat API: API requests
- External AI chat API → Gateway client: chat responses
- Gateway client → Gateway logging: logs events and failures
- Chat operation → Gateway logging: logs operation events
- Gateway client → Runtime entry point: returns chat result
- Environment contract → Runtime environment: documents variables
- Runtime environment → Configuration: supplies settings
- Python version → Runtime entry point: selects runtime
- Package metadata → Runtime entry point: packages application
- Resolved dependencies → Package metadata: pins dependencies