FibX MCP Server

Swap, transfer, track a portfolio and use Aave V3 on Base, Citrea, HyperEVM and Monad.

Local serverstdio

What is the FibX MCP server?

Swap, transfer, track a portfolio and use Aave V3 on Base, Citrea, HyperEVM and Monad. The fibx mcp server wraps that behind the Model Context Protocol, so an assistant can use it through 7 defined tools rather than through you.

What it actually does

Consolidated cross-chain portfolio view with USD valuations:

  • Multi-Chain Support — Base, Citrea, HyperEVM, and Monad
  • Portfolio — Cross-chain portfolio overview with USD valuations and DeFi positions
  • Token Swaps — Optimal routing via Fibrous aggregation with auto-slippage
  • Transfers — Send ETH or any ERC-20 token
  • Aave V3 — Supply, borrow, repay, withdraw, and browse markets on Base
  • MCP Server — Built-in AI agent integration for Cursor, Claude Desktop, and Antigravity (11 tools, 4 categories)

Its toolset

Everything the assistant can do here goes through one of these:

  • Authentication — The Authentication tool exposed by this server
  • Balance — The Balance tool exposed by this server
  • Portfolio — Consolidated cross-chain portfolio view with USD valuations:
  • Send — The Send tool exposed by this server
  • Quote — The Quote tool exposed by this server
  • Swap — The Swap tool exposed by this server
  • Configuration — Set custom RPC URLs to avoid rate limits on public endpoints:

Adding it to your client

fibx on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Configuration

You will need one environment variable: FIBX_SESSION_SECRET. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

  • Node.js >= 18 - A running fibx-server instance (required for Privy wallet operations; not needed for private key imports)

When to reach for it

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. FibX's toolset — Authentication, Balance, Portfolio and 4 more — is a fair guide to whether it matches your workflow. It is maintained by finance.fibrous; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Caveats

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the fibx mcp server does with a few real requests.

Available tools

ToolWhat it does
AuthenticationThe Authentication tool exposed by this server.
BalanceThe Balance tool exposed by this server.
PortfolioConsolidated cross-chain portfolio view with USD valuations:
SendThe Send tool exposed by this server.
QuoteThe Quote tool exposed by this server.
SwapThe Swap tool exposed by this server.
ConfigurationSet custom RPC URLs to avoid rate limits on public endpoints:

How to install the FibX MCP server

{
  "mcpServers": {
    "fibx": {
      "command": "npx",
      "args": ["-y", "fibx"],
      "env": {
        "FIBX_SESSION_SECRET": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • Node.js >= 18 - A running fibx-server instance (required for Privy wallet operations; not needed for private key imports)
VariableDescriptionRequired
FIBX_SESSION_SECRETCredential the server authenticates with.Yes

Example prompts to try

  • Use FibX to Authentication.
  • Use FibX to Balance.
  • Use FibX to Portfolio.

Frequently asked questions

It connects FibX to MCP-compatible AI assistants such as Claude and Cursor, exposing 7 tools (Authentication, Balance, Portfolio, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with FibX directly.