1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@NEXUS list all percolator perpetual markets" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

NEXUS

Q: Which integrations are available for this server?

Provides tools for interacting with Solana DeFi protocols including Percolator perpetuals, Sigma derivatives, Exodus yield vaults, Veil privacy swaps, Stratum orderbooks, and Sovereign identity.

by psyto

Overview Schema Related Servers Score Discussions

TypeScript

Remote

NEXUS

MCP Server + Agent Kit for Solana DeFi Protocols.

Exposes Solana DeFi infrastructure — Percolator perpetuals, Sigma derivatives, Exodus yield vaults, Veil privacy swaps, Stratum orderbooks, and Sovereign identity — to AI agents via the Model Context Protocol.

Packages

Package	Description
`@nexus/core`	Protocol client wrappers (read + write operations)
`@nexus/mcp-server`	MCP server exposing 31 DeFi tools

Related MCP server: AMOCA Solana MCP Server

MCP Tools (31 total)

Sovereign (3 tools)

Tool	Description
`sovereign_get_identity`	Get wallet's identity: dimension scores, composite, tier
`sovereign_get_dimension_score`	Get specific dimension score (trading, civic, developer, infra, creator)
`sovereign_assess_confidence`	Map tier to trust confidence level (high/medium/low/none)

Percolator (6 tools)

Tool	Description
`percolator_list_markets`	List all markets with OI, insurance, risk params
`percolator_get_market`	Full market state (header + config + engine + risk)
`percolator_get_user_position`	User's capital, PnL, position, entry, funding
`percolator_deposit_collateral`	Deposit collateral to user account
`percolator_withdraw_collateral`	Withdraw collateral
`percolator_trade`	Open/adjust position (+long / -short)

Sigma (8 tools)

Tool	Description
`sigma_get_volatility_index`	Current vol index level and SVI parameters
`sigma_get_variance_pool`	Variance swap pool state
`sigma_get_position`	User's variance swap position
`sigma_open_long`	Long variance (profit when vol > strike)
`sigma_open_short`	Short variance
`sigma_close_position`	Close variance swap early
`sigma_get_funding_rate`	Latest funding rate for a symbol
`sigma_get_funding_pool`	Funding swap pool state

Exodus (5 tools)

Tool	Description
`exodus_get_protocol_config`	Protocol config: mints, fees, totals
`exodus_get_user_position`	User deposits, shares, yield, tier
`exodus_get_yield_sources`	Available yields: APY, NAV, allocation
`exodus_deposit_jpy`	Deposit JPY for USDC yield conversion
`exodus_get_portfolio_value`	Total portfolio value (USDC + JPY equiv)

Veil CSR (5 tools)

Tool	Description
`veil_get_solver_config`	CSR solver config: fees, volume
`veil_get_order`	Get specific encrypted order
`veil_get_orders_by_owner`	All orders for a wallet
`veil_submit_encrypted_order`	Submit encrypted swap order
`veil_cancel_order`	Cancel pending encrypted order

Stratum (4 tools)

Tool	Description
`stratum_get_orderbook`	Order book state
`stratum_get_epoch`	Epoch info: merkle root, finalization
`stratum_derive_orderbook_pda`	Derive PDA address
`stratum_get_merkle_proof`	Build merkle proof for settlement

Setup

# Install dependencies
yarn install

# Build
yarn build

# Configure
cp .env.example .env
# Edit .env with your RPC URL and program IDs

Environment Variables

Variable	Description	Default
`SOLANA_RPC_URL`	Solana RPC endpoint	`https://api.devnet.solana.com`
`SOLANA_PRIVATE_KEY`	Wallet private key (base58 or JSON array)	—
`PERCOLATOR_PROGRAM_ID`	Percolator program ID	`F1uxb9kqJg7jv1FoYCjqBm12RYDsTEPnHUbpTopsNVAg`
`SOVEREIGN_PROGRAM_ID`	Sovereign program ID	`2UAZc1jj4QTSkgrC8U9d4a7EM9AQunxMvW5g7rX7Af9T`
`SIGMA_PROGRAM_ID`	Sigma program ID	—
`EXODUS_PROGRAM_ID`	Exodus program ID	—
`VEIL_CSR_PROGRAM_ID`	Veil CSR program ID	—
`STRATUM_PROGRAM_ID`	Stratum program ID	—

Usage

With Claude Desktop

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

{
  "mcpServers": {
    "nexus": {
      "command": "node",
      "args": ["/path/to/nexus/packages/nexus-mcp-server/dist/index.js"],
      "env": {
        "SOLANA_RPC_URL": "https://api.devnet.solana.com"
      }
    }
  }
}

With MCP Inspector

npx @modelcontextprotocol/inspector node packages/nexus-mcp-server/dist/index.js

Architecture

nexus/
├── packages/
│   ├── nexus-core/          # Protocol client wrappers
│   │   └── src/
│   │       ├── config.ts         # NexusConfig + loadConfigFromEnv()
│   │       ├── connection.ts     # createConnection, loadWallet
│   │       ├── types.ts          # TxResult, ToolResponse
│   │       ├── helpers.ts        # jsonContent, errorContent, serializeBigInts
│   │       └── protocols/
│   │           ├── sovereign/    # Raw buffer parsing for identity PDA
│   │           ├── percolator/   # Slab parsing, binary encoding, instructions
│   │           ├── sigma/        # Variance pools, funding swaps, vol indices
│   │           ├── exodus/       # JPY/USDC yield vaults
│   │           ├── veil/         # Encrypted order management
│   │           └── stratum/      # Epoch-based orderbook, merkle proofs
│   └── nexus-mcp-server/   # MCP server
│       └── src/
│           ├── index.ts          # Server + StdioServerTransport entry
│           ├── handler.ts        # Prefix-based dispatch
│           └── tools/            # Per-protocol tool definitions + handlers

License

MIT

This server cannot be installed

license - permissive license

quality - not tested

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

–Release cycle

–Releases (12mo)

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