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Hedera Hcs Mcp Server

io.github.mountainmystic/hedera-hcs-mcp-server ยท v1.0.1

AI-powered Hedera HCS topic intelligence for agents. Pay per call in HBAR.

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add hedera-hcs-mcp-server -e HEDERA_ACCOUNT_ID=<HEDERA_ACCOUNT_ID> -e HEDERA_PRIVATE_KEY=<HEDERA_PRIVATE_KEY> -e HEDERA_NETWORK=<HEDERA_NETWORK> -e OPENAI_API_KEY=<OPENAI_API_KEY> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "hedera-hcs-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "HEDERA_ACCOUNT_ID": "<HEDERA_ACCOUNT_ID>",
        "HEDERA_PRIVATE_KEY": "<HEDERA_PRIVATE_KEY>",
        "HEDERA_NETWORK": "<HEDERA_NETWORK>",
        "OPENAI_API_KEY": "<OPENAI_API_KEY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "hedera-hcs-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "HEDERA_ACCOUNT_ID": "<HEDERA_ACCOUNT_ID>",
        "HEDERA_PRIVATE_KEY": "<HEDERA_PRIVATE_KEY>",
        "HEDERA_NETWORK": "<HEDERA_NETWORK>",
        "OPENAI_API_KEY": "<OPENAI_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "hedera-hcs-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "HEDERA_ACCOUNT_ID": "<HEDERA_ACCOUNT_ID>",
        "HEDERA_PRIVATE_KEY": "<HEDERA_PRIVATE_KEY>",
        "HEDERA_NETWORK": "<HEDERA_NETWORK>",
        "OPENAI_API_KEY": "<OPENAI_API_KEY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
HEDERA_ACCOUNT_ID
Required		Hedera account ID in format 0.0.XXXXXXX
HEDERA_PRIVATE_KEY
Required, secret		Hedera account private key (ECDSA hex format)
HEDERA_NETWORK
Required		Hedera network: testnet or mainnet
OPENAI_API_KEY
Required, secret		OpenAI API key for GPT-4o Mini powered analysis

Details

Package[email protected] (NPM, stdio)
First published25 Feb 2026
Last updated25 Feb 2026
Registry nameio.github.mountainmystic/hedera-hcs-mcp-server

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