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Vector MCP Server

by Apex-Fusion
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Vector MCP Server

MCP (Model Context Protocol) server for the Vector blockchain — Apex Fusion's UTXO-based L2. Enables AI agents (Claude, GPT, Gemini, or any MCP client) to interact with Vector natively: query balances, send transactions, deploy and interact with smart contracts, and manage on-chain AI agent identities.

Built on Ogmios + Koios — no Blockfrost dependency.

Features

  • Wallet management — derive addresses from mnemonic, query balances and UTxOs

  • Transactions — send ADA and native tokens, build multi-output transactions, dry-run simulations

  • Smart contracts — deploy Plutus/Aiken validators, lock and spend UTxOs at script addresses

  • Agent registry — register, discover, update, transfer, and deregister on-chain AI agent identities via soulbound NFTs

  • Agent messaging — send on-chain messages between agents via TX metadata

  • Safety controls — per-transaction and daily spend limits, persistent audit log, rate limiting

  • SSE transport — HTTP server with Server-Sent Events for MCP client connectivity

Related MCP server: Somnia MCP Server

MCP Tools

Wallet & Queries

Tool

Description

vector_get_balance

Get ADA and token balances for any address

vector_get_address

Get the wallet address, balance, and holdings from a mnemonic

vector_get_utxos

List UTxOs for an address or wallet

vector_get_spend_limits

Check spend limits, daily usage, and audit log

vector_get_transaction_history

Get transaction history for a wallet

Transactions

Tool

Description

vector_send_apex

Send ADA (respects spend limits)

vector_send_tokens

Send native tokens with optional ADA

vector_build_transaction

Build multi-output transactions (sign+submit or return unsigned CBOR)

vector_dry_run

Simulate a transaction without submitting — estimate fees and validate

Smart Contracts

Tool

Description

vector_deploy_contract

Deploy a Plutus V1/V2/V3 or Aiken validator to the chain

vector_interact_contract

Lock ADA at a script address or spend from it with a redeemer

Agent Registry

Tool

Description

vector_register_agent

Register an agent — mints a soulbound identity NFT and locks a 10 AP3X deposit

vector_discover_agents

Discover registered agents, filter by capability or framework (no wallet needed)

vector_get_agent_profile

Get an agent's full profile by DID (no wallet needed)

vector_update_agent

Update an agent's name, description, capabilities, framework, or endpoint

vector_transfer_agent

Transfer agent ownership to a new address

vector_deregister_agent

Deregister an agent — burns the identity NFT and returns the 10 AP3X deposit

vector_message_agent

Send an on-chain message to an agent via TX metadata (label 674)

Agent DIDs follow the format: did:vector:agent:{policyId}:{nftAssetName}

Quick Start

1. Install and build

npm install
npm run build

2. Configure environment (optional)

cp .env.example .env
# Edit .env with your endpoint URLs (defaults point to Vector testnet)

The mnemonic is passed per-call by the MCP client, not stored in the environment.

3. Run

npm start
# Server listens on port 3000 (configurable via PORT env var)

4. Add to Claude Desktop

Add to your Claude Desktop MCP config (claude_desktop_config.json):

{
  "mcpServers": {
    "vector": {
      "command": "node",
      "args": ["/path/to/vector-mcp-server/build/index.js"],
      "env": {
        "VECTOR_OGMIOS_URL": "https://ogmios.vector.testnet.apexfusion.org",
        "VECTOR_SUBMIT_URL": "https://submit.vector.testnet.apexfusion.org/api/submit/tx",
        "VECTOR_KOIOS_URL": "https://koios.vector.testnet.apexfusion.org/",
        "VECTOR_EXPLORER_URL": "https://vector.testnet.apexscan.org"
      }
    }
  }
}

Docker

npm run build
docker build -t vector-mcp .
docker run -p 3000:3000 vector-mcp

Configuration

Variable

Description

Default

PORT

HTTP server port

3000

VECTOR_OGMIOS_URL

Ogmios HTTP JSON-RPC endpoint

https://ogmios.vector.testnet.apexfusion.org

VECTOR_KOIOS_URL

Koios REST API endpoint

https://koios.vector.testnet.apexfusion.org/

VECTOR_SUBMIT_URL

Transaction submit API

https://submit.vector.testnet.apexfusion.org/api/submit/tx

VECTOR_EXPLORER_URL

Block explorer base URL

https://vector.testnet.apexscan.org

VECTOR_SPEND_LIMIT_PER_TX

Max lovelace per transaction

100000000 (100 ADA)

VECTOR_SPEND_LIMIT_DAILY

Max lovelace per day

500000000 (500 ADA)

VECTOR_AUDIT_LOG_PATH

Persistent audit log file path

./vector-audit-log.json

VECTOR_RATE_LIMIT_PER_MINUTE

Max tool calls per minute

60

Testing

# Set the wallet mnemonic (file or env var)
echo "your mnemonic words here" > mnemonic.txt
# or: export VECTOR_MNEMONIC="your mnemonic words here"

npm test

Tests cover all 18 tools end-to-end against Vector testnet, including the full agent lifecycle: register, discover, profile, update, transfer, message, and deregister.

Architecture

┌──────────────────────┐      ┌──────────────────────────┐
│  Claude / GPT / etc. │◄────►│  vector-mcp-server       │
│  (any MCP client)    │ SSE  │                          │
└──────────────────────┘      │  ┌────────────────────┐  │
                              │  │ Rate Limiter        │  │
                              │  │ (60 calls/min)      │  │
                              │  └────────┬───────────┘  │
                              │           │               │
                              │  ┌────────▼───────────┐  │
                              │  │ Safety Layer        │  │
                              │  │ - Per-tx limits     │  │
                              │  │ - Daily limits      │  │
                              │  │ - Audit log         │  │
                              │  └────────┬───────────┘  │
                              │           │               │
                              │  ┌────────▼───────────┐  │
                              │  │ Lucid + Ogmios     │  │
                              │  │ Provider            │  │
                              │  └────────┬───────────┘  │
                              │           │               │
                              │  ┌────────▼───────────┐  │
                              │  │ Ogmios / Koios /   │  │
                              │  │ Submit API          │  │
                              │  └────────────────────┘  │
                              └──────────────────────────┘

About Vector

Vector is Apex Fusion's UTXO-based L2 blockchain, running with Cardano's mainnet parameters. It provides near-instant finality and 4x Cardano throughput, making it ideal for AI agent interactions.

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