Definecurrency

VerusIDX MCP Servers

7 MCP servers giving AI agents direct, local access to the Verus blockchain — 49 tools, zero cloud dependencies. No API keys. No accounts. No intermediary between the agent and the chain.

Works with Claude Code, Cursor, and any MCP-compatible client.

What Can an Agent Do?

• Identity — create, update, revoke, and recover VerusIDs (protocol-level blockchain identities with on-chain data storage)
• Data — store, retrieve, and decrypt on-chain data; sign and verify with SHA-256, Blake2b, Keccak-256, or Merkle Mountain Range proofs; share decryption access via viewing keys
• Send & convert — move currency, convert through fractional baskets, cross-chain transfers via PBaaS bridges
• Create currencies — define tokens, fractional reserve baskets, centralized currencies, ERC-20 mapped tokens
• Trade — on-chain atomic swaps for currency-for-currency, currency-for-ID, or ID-for-ID
• Privacy — shielded transactions via Sapling zero-knowledge proofs

Quick Start

Prerequisites: a running Verus daemon and Node.js 18+.

Add the foundation server to your MCP client config:

{

"mcpServers": { "verusidx-chain": { "command": "npx", "args": ["-y", "@verusidx/chain-mcp"] } } }

Then tell your AI to call refresh_chains — it discovers your local daemons automatically. That's it.

No separate install step — npx fetches and runs the package on demand. Add more servers as you need them (see below).

Servers

`chain-mcp` is the foundation. It discovers running daemons and writes a registry file that all other servers read. Install it first. Every tool requires a chain parameter (e.g., "VRSC", "vrsctest") — there is no default chain.

Adding More Servers

Each server is independent — add or remove without affecting the others:

{

"mcpServers": { "verusidx-chain": { "command": "npx", "args": ["-y", "@verusidx/chain-mcp"] }, "verusidx-identity": { "command": "npx", "args": ["-y", "@verusidx/identity-mcp"] }, "verusidx-send": { "command": "npx", "args": ["-y", "@verusidx/send-mcp"] }, "verusidx-data": { "command": "npx", "args": ["-y", "@verusidx/data-mcp"] } } }

Same pattern for @verusidx/address-mcp, @verusidx/marketplace-mcp, and @verusidx/definecurrency-mcp. See each package's README for details.

Safety

Giving an AI agent access to a wallet has real consequences. These servers are designed with that in mind.

Architecture

AI Client (Claude Code, Cursor, etc.)

| | stdio (local process, no network) v verusidx MCP servers (7 servers, 49 tools) | | JSON-RPC over localhost v verusd (your local Verus daemon)

• Shared library (@verusidx/shared) — registry reader, RPC client with credential caching, error normalization, audit logging, spending limits, read-only guard. Zero runtime dependencies.
• Chain registry — chains.json written atomically by chain-mcp, read by all other servers via stat()-based cache invalidation.
• Each server runs as a separate process via stdio transport. No shared memory between servers.

Configuration

Environment variables you can set (optional):

Spending Limits

Servers that send funds (send-mcp, marketplace-mcp) enforce per-currency spending limits. A default spending-limits.json is created automatically on first run:

{

"VRSC": 10 }

This caps any single sendcurrency call at 10 VRSC. To adjust limits, edit the file at:

• macOS: ~/Library/Application Support/verusidx-mcp/spending-limits.json
• Linux: ~/.config/verusidx-mcp/spending-limits.json
• Windows: %APPDATA%\verusidx-mcp\spending-limits.json

Add entries for any currency: { "VRSC": 100, "Bridge.vETH": 0.5 }. Currency names are case-insensitive.

Development

# Prerequisites: Node.js >= 18, pnpm

pnpm install pnpm -r build # build all packages pnpm -r test # test all packages

Build a specific server and its dependencies

pnpm --filter @verusidx/chain-mcp... build

Project Structure

verusidx-mcp/

├── packages/ │ ├── shared/ # @verusidx/shared — internal library │ ├── chain/ # @verusidx/chain-mcp — foundation server │ ├── identity/ # @verusidx/identity-mcp │ ├── send/ # @verusidx/send-mcp │ ├── data/ # @verusidx/data-mcp │ ├── definecurrency/ # @verusidx/definecurrency-mcp │ ├── marketplace/ # @verusidx/marketplace-mcp │ └── address/ # @verusidx/address-mcp └── tool-specs/ # Agent-facing tool description specs

Supply Chain Security

• Zero runtime dependencies in the shared library (Node built-ins + built-in fetch)
• MCP servers depend only on @modelcontextprotocol/sdk and zod
• onlyBuiltDependencies: [] blocks dependency install scripts
• All credentials read from daemon .conf files — never stored by the MCP servers

About Verus

Verus is an open-source, fair-launch blockchain — no ICO, no premine, no VC funding. Running since 2018 with hybrid PoW/PoS consensus and a CPU-mineable hash algorithm (VerusHash 2.2).

There are no smart contracts. Identity, data storage, DeFi conversions, atomic swaps, privacy (Sapling zk-proofs), and cross-chain bridges (PBaaS) are all consensus-level protocol features. For AI agents that need to transact reliably, protocol-level guarantees beat contract-level ones.

License

MIT