Crypto.com Agent Plugin – SQLite

The Crypto.com Agent Plugin – SQLite adds support for persistent state storage using SQLite in the Crypto.com Agent Client ecosystem. This plugin allows conversational agents to store, retrieve, and manage session states efficiently using a lightweight, file-based database.

Features

SQLite Integration

• Stores and retrieves agent conversation states using a local SQLite database.
• Supports fast, lightweight persistence — no external DB required.
• Automatically creates the database and schema if they don't exist.
• Ensures thread-safe database access via check_same_thread=False.

Plugin Architecture

• Packaged as a standalone Python plugin.

• Implements the AgentPlugin storage interface with full support for:

  • save_state()
  • load_state()
  • delete_state()
  • list_keys()

• Uses Python entry points and PEP 621 standards (pyproject.toml).

Easy to Install and Extend

• Fully decoupled from the core Agent SDK.
• Compatible with other plugins (e.g., Discord, LangFuse, CLI).
• Automatically discovered and initialized by the SDK.

Installation

Install the plugin into your environment:

pip install cryptocom-agent-plugin-sqlite

Usage

Importing the Plugin

from crypto_com_agent_plugin_sqlite import SQLitePlugin

Using with the Agent SDK

from crypto_com_agent_client import Agent
from crypto_com_agent_plugin_sqlite import SQLitePlugin

sqlite_plugin = SQLitePlugin(db_path="agent_state.db")

agent = Agent.init(
    llm_config={...},
    blockchain_config={...},
    plugins={...},
    plugin_instances=[sqlite_plugin],
)

agent.start()

Plugin Lifecycle

This plugin defines:

• mode = "support" — it does not control the event loop; multiple support plugins can run together.
• save_state(state, key) — stores agent state for a specific session_id:thread_id.
• load_state(key) — retrieves stored state by key.
• delete_state(key) — removes stored state.
• list_keys() — lists all session keys stored in the database.

Example

from crypto_com_agent_plugin_sqlite import SQLitePlugin

# Initialize storage
storage = SQLitePlugin(db_path="agent_state.db")

# Save a sample state
state = {
    "messages": [
        {"type": "HumanMessage", "content": "Hello!"}
    ]
}
storage.save_state(state, key="session1:thread1")

# Load the saved state
loaded = storage.load_state(key="session1:thread1")
print(loaded)

# List all saved keys
print(storage.list_keys())

# Delete the saved state
storage.delete_state("session1:thread1")

Entry Point Declaration

This plugin is auto-discoverable via pyproject.toml:

[tool.poetry.plugins."crypto_com_agent.plugins"]
sqlite = "crypto_com_agent_plugin_sqlite:SQLitePlugin"

This allows the Agent SDK to dynamically discover and initialize your plugin.

File Structure

crypto_com_agent_plugin_sqlite/
├── __init__.py
└── sqlite_plugin.py   # Main plugin implementation

Contributing

We welcome contributions! Please ensure your plugin:

• Adheres to the AgentPlugin storage interface.
• Includes proper type hints, docstrings, and unit tests.
• Handles serialization and deserialization safely.

License

This project is licensed under the MIT License. See the LICENSE file for details.