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Boar Blockchain MCP

This repository is the source of truth for Boar blockchain MCP - a free, keyless remote MCP server exposing 50 read-only blockchain tools across Bitcoin, Ethereum, and Mezo. No local installation required.

The server runs on Cloudflare Workers and is available at:

  • Basic endpoint (37 tools): https://mcp.boar.network/basic
  • Advanced endpoint (13 tools): https://mcp.boar.network/advanced

All tools are strictly read-only. No transaction signing, no wallet access, no state mutation.

Repository Structure

  • clients/ - setup guides for Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Gemini CLI, OpenCode
  • docs/ - tool references, basic vs advanced guide, prompt cookbook
  • .mcp.json - MCP server configuration for Claude Code (project-level auto-detection)
  • opencode.json - MCP server configuration for OpenCode (project-level auto-detection)
  • .claude-plugin/ - Claude plugin standard files (see below)
  • .plugin/ - Open Plugin Standard files (see below)

Plugin Standards

Claude Plugin Standard

The .claude-plugin/ directory follows the Claude plugin standard for Claude Code and Claude Desktop.

Relevant files:

  • .claude-plugin/plugin.json - plugin manifest referencing the MCP server config
  • .claude-plugin/mcp.json - MCP server configuration (referenced by plugin.json via "mcpServers": "./mcp.json")
  • .claude-plugin/marketplace.json - marketplace manifest enabling installation via /plugin install

To install via Claude Code:

/plugin install boar-blockchain-mcp@boar-network/blockchain-mcp

OpenCode

The opencode.json file in the repo root is auto-detected by OpenCode as a project-level MCP config.

Relevant files:

  • opencode.json - MCP server configuration using "type": "remote" and top-level "mcp" key (OpenCode's format)
  • clients/opencode.md - setup guide

Open Plugin Standard

The .plugin/ directory follows the Open Plugin Standard.

Relevant files:

  • .plugin/plugin.json - plugin manifest

Working with This Repository

  • Documentation changes go in clients/ or docs/ depending on scope
  • When bumping the version, update it consistently across .plugin/plugin.json, .claude-plugin/plugin.json, .claude-plugin/marketplace.json, and CHANGELOG.md
  • The MCP server itself is not hosted in this repo - this repo is documentation and plugin configuration only