How to Use the Fireblocks MCP in Claude

Q: How does this integration handle high network fees during execution?

The MCP Server queries estimatenetworkfee to check real-time gas costs before submitting any payload. If fees exceed your parameters, the agent prompts you for confirmation or waits for costs to drop.

Run your Fireblocks treasury operations and sign multi-chain transactions directly from the Claude Desktop chat interface.

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Connect Fireblocks MCP to Claude Desktop

Create your Vinkius account to connect Fireblocks to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Fireblocks with Claude Desktop

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Provision Vaults inside Claude Desktop

The `create_vault_account` tool allows your agent to spin up secure vault accounts inside your Fireblocks workspace. You don't need to click through a web dashboard to configure your treasury structure. Once the vault exists, the agent triggers `create_vault_account_asset` to assign specific tokens to that vault. It then runs `create_vault_account_asset_address` to generate deposit addresses, letting you manage your inventory without opening the web console.

Execute and track transactions in chat

The `create_transaction` tool allows your agent to draft, initiate, and submit asset transfers across any supported blockchain. It takes your instructions and translates them into precise API payloads. If gas spikes or a transfer gets stuck, you tell the agent to run `cancel_transaction` or `drop_transaction` right in the chat. It keeps tabs on execution status by checking `get_transaction` at regular intervals.

Validate travel rules and estimate fees

The `validate_travel_rule` tool in this MCP Server verifies that outbound transfers comply with regulatory requirements before they hit the blockchain. Your agent runs this check to verify counterparty VASP information against current compliance databases. To avoid overpaying for gas during network congestion, the agent calls `estimate_network_fee` to pull real-time pricing. It then updates your auto-fueling thresholds using `update_gas_station` to keep your operations moving efficiently.

Setup guide

Set up Fireblocks MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The Fireblocks MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the Fireblocks MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under fireblocks-mcp.

json

{
  "mcpServers": {
    "fireblocks-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Fireblocks. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Fireblocks MCP in Claude Desktop

You add the configuration for this MCP Server to your local `claude_desktop_config.json` file. Provide your Fireblocks API credentials as environment variables in the file. Restart Claude Desktop to let the hammer icon appear in your chat input.

Yes, you can instruct your agent to abort pending transfers. The agent invokes `cancel_transaction` or `drop_transaction` directly through the chat interface. You will see the updated status immediately without needing to open the web portal.

Yes, the integration supports custom ERC-20 and other token types. Your agent can run `register_asset` to track your proprietary smart contracts. It then manages them alongside standard mainnet assets.

The MCP Server queries `estimate_network_fee` to check real-time gas costs before submitting any payload. If fees exceed your parameters, the agent prompts you for confirmation or waits for costs to drop.

All API keys and transaction payloads remain local to your machine when running on Claude Desktop. This MCP integration uses an ephemeral V8 sandbox to process data safely. Your raw private keys never leave your secure local storage.

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