apex-fusion-agent-sdk 0.1.8

Python Agent SDK for Vector blockchain — PyCardano + Ogmios

apex-fusion-agent-sdk

Python Agent SDK for the Vector blockchain. Built on PyCardano + Ogmios.

Installation

pip install apex-fusion-agent-sdk

Requires Python >= 3.11.

Quick Start

import asyncio
from vector_agent import VectorAgent

async def main():
    async with VectorAgent() as agent:
        address = await agent.get_address()
        print(f"Address: {address}")

        balance = await agent.get_balance()
        print(f"ADA: {balance.ada}")

        tx = await agent.send(to="addr1...", ada=5.0)
        print(f"TX Hash: {tx.tx_hash}")
        print(f"Explorer: {tx.explorer_url}")

asyncio.run(main())

Configuration is read from environment variables by default (see Configuration).

Features

Two Modes of Operation

• VectorAgent — Standalone mode. Talks directly to Ogmios and submit-api via PyCardano. No external server needed.
• VectorAgentMCP — MCP client mode. Connects to a TypeScript MCP server via stdio. Same API surface as VectorAgent.

Wallet Management

• HD Wallets — BIP39 mnemonic with CIP-1852 derivation
• .skey Files — cardano-cli signing key files

Transactions

• Send ADA and native tokens
• Build multi-output transactions
• Dry-run simulation with fee estimates
• Transaction history queries via Koios

Smart Contracts

• Deploy PlutusV1/V2/V3 scripts
• Interact with deployed contracts (lock & spend)

Safety Layer

• Configurable per-transaction and daily spend limits (in lovelace)
• Audit logging of all transactions

API

Query Methods

await agent.get_address()                  # Agent's payment address
await agent.get_balance()                  # ADA + token balances
await agent.get_balance("addr1...")         # Balance of any address
await agent.get_utxos()                    # List UTxOs
await agent.get_protocol_parameters()      # Raw protocol params
await agent.get_spend_limits()             # Current spend limit status
await agent.get_transaction_history()      # TX history via Koios

Transfer Methods

# Send ADA
tx = await agent.send(to="addr1...", ada=5.0)
tx = await agent.send(to="addr1...", lovelace=5_000_000)

# Send native tokens
tx = await agent.send_tokens(
    to="addr1...",
    policy_id="abcd1234...",
    asset_name="MyToken",
    quantity=100,
)

Advanced Transaction Building

# Dry-run (simulate without submitting)
result = await agent.dry_run(to="addr1...", ada=5.0)
print(f"Fee: {result.fee_ada} ADA")

# Multi-output transaction
result = await agent.build_transaction(
    outputs=[
        {"address": "addr1...", "lovelace": 5_000_000},
        {"address": "addr1...", "lovelace": 3_000_000},
    ],
    submit=True,
)

Smart Contracts

# Deploy a script
result = await agent.deploy_contract(
    script_cbor="59...",
    script_type="PlutusV2",
    lovelace=2_000_000,
)
print(f"Script address: {result.script_address}")

# Interact with a deployed contract
result = await agent.interact_contract(
    script_cbor="59...",
    action="spend",
    utxo_ref={"tx_hash": "abcd...", "output_index": 0},
)

MCP Client Mode

from vector_agent import VectorAgentMCP

async with VectorAgentMCP(
    server_command="node",
    server_args=["build/index.js"],
    working_dir="/path/to/mcp-server",
) as agent:
    balance = await agent.get_balance()

VectorAgentMCP has the same API as VectorAgent — it delegates all operations to a TypeScript MCP server over stdio.

Configuration

All settings can be passed as constructor arguments or read from environment variables:

Environment Variable	Description	Default
VECTOR_OGMIOS_URL	Ogmios endpoint	—
VECTOR_SUBMIT_URL	Submit-api endpoint	—
VECTOR_KOIOS_URL	Koios endpoint (for history)	testnet
VECTOR_EXPLORER_URL	Block explorer base URL	testnet
VECTOR_MNEMONIC	BIP39 mnemonic	—
VECTOR_SKEY_PATH	Path to cardano-cli .skey file	—
VECTOR_ACCOUNT_INDEX	HD derivation account index	0
VECTOR_SPEND_LIMIT_PER_TX	Per-transaction limit (lovelace)	100000000 (100 ADA)
VECTOR_SPEND_LIMIT_DAILY	Daily limit (lovelace)	500000000 (500 ADA)

See .env.example for a template.

License

MIT