Byte MCP Server

Discover, evaluate, and subscribe to Byte Protocol data feeds. 10 tools, zero API keys.

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What is the Byte MCP server?

Discover, evaluate, and subscribe to Byte Protocol data feeds. 10 tools, zero API keys. Exposed over MCP by the byte mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.

What it actually does

Wire it into your MCP client (Claude Desktop config below), then your agent can:

Configuration

You will need 4 environment variables: PRIVATE_KEY, RPC_URL, INDEXER_URL, BYTE_GATEWAY_URL. 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.

Adding it to your client

The server ships on npm as byte-mcp-server, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

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. It is maintained by 0rkz; 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We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.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 byte mcp server does with a few real requests.

How to install the Byte MCP server

{
  "mcpServers": {
    "payperbyte": {
      "command": "npx",
      "args": ["-y", "byte-mcp-server"],
      "env": {
        "PRIVATE_KEY": "0x...",
        "RPC_URL": "https://sepolia-rollup.arbitrum.io/rpc",
        "INDEXER_URL": "http://localhost:8080"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

VariableDescriptionRequired
PRIVATE_KEYCredential the server authenticates with.Yes
RPC_URLEndpoint or connection string the server talks to.Yes
INDEXER_URLEndpoint or connection string the server talks to.Yes
BYTE_GATEWAY_URLEndpoint or connection string the server talks to.Yes

Frequently asked questions

It connects Byte to MCP-compatible AI assistants such as Claude and Cursor. Instead of copying data back and forth by hand, the assistant works with Byte directly.