How to connect QuickNode MCP to Claude

Connect Claude Web, Desktop and Cowork to QuickNode MCP. List latest blocks and transactions, get pending transactions for address, and more using natural language, with authentication handled for you.

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QuickNode MCP

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QuickNode MCP is a managed platform for live blockchain data and RPC endpoint management. It centralizes security, rate limits, monitoring, and billing for your nodes.

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Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your QuickNode account to Claude via Composio Connect, enabling it to list latest blocks and transactions, get pending transactions for address, create RPC endpoint with rate limits, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate QuickNode MCP with

ChatGPT Hermes Atomic Agent

Connecting QuickNode to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash

https://connect.composio.dev/mcp

Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your QuickNode account

Back in Claude, ask it to connect to QuickNode or give it any QuickNode-related task.

For example, ask Claude to:

"List latest blocks and transactions"
"Get pending transactions for address"
"Create RPC endpoint with rate limits"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your QuickNode account is ready to use.

What is the QuickNode Claude Connector, and what's possible with it?

The QuickNode MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your QuickNode account. It provides structured and secure access so your agent can perform QuickNode operations on your behalf.

Troubleshooting

1. Why does Claude not use the Composio connector for QuickNode?

The connector can show as connected, but Claude must use it in each QuickNode conversation.

Click + at the lower left of the chat, or type /.
Hover Connectors.
Turn on Composio.
Ask Claude to connect to QuickNode again.

2. Why does Claude show an MCP server error before QuickNode connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for QuickNode.

Check that the connector URL is https://connect.composio.dev/mcp.
Connectors run from Anthropic's cloud, so your device network is usually not the problem.
Add the connector again from Customize > Connectors, then ask Claude to connect QuickNode.
If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the QuickNode authorization link not work?

The Composio connector is one server. Your QuickNode account connects separately when Claude asks for it.

If the browser does not open, or the link expires, ask Claude to retry the QuickNode connection.
Composio creates a fresh QuickNode authorization link.
Open that link in your browser and finish the QuickNode sign-in.

4. Why do QuickNode actions fail after they worked before?

The QuickNode connection can expire or lose permission.

Ask Claude to inspect the QuickNode connection.
If the connection is unhealthy, disconnect it when Claude prompts you.
Reconnect the QuickNode account and retry the action.
If Claude shows a permission prompt, approve it before Claude changes data in QuickNode.
If the action still fails with a permission error, check that the connected account has that permission in QuickNode itself.

5. How do I switch to a different QuickNode account?

Claude can manage the QuickNode connection for you.

Ask Claude to disconnect or delete the current QuickNode account.
Ask Claude to connect QuickNode again.
Open the new Composio authorization link for QuickNode.
Sign in with the other QuickNode account in the browser.
After the account connects, ask Claude to retry the QuickNode task.

6. Why is my QuickNode connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your QuickNode connection works in Claude Web, Desktop, and Cowork.

In Claude Desktop, open Customize > Connectors.
Next to Composio, click ⋮ and click Clear cache.
If QuickNode tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect QuickNode.

TOOLS

Supported Tools

Every QuickNode MCP action and event your agent gets out of the box.

Call-rpc

Call an allowed read-only JSON-RPC method through authenticated Quicknode Tooling Access.

Create-endpoint

Create a new web3 RPC endpoint for a given chain and network under user's Quicknode account.

Create-endpoint-method-rate-limit

Create a new method-specific rate limiter for a Quicknode endpoint

Create-security-rule

Create a security rule for a Quicknode endpoint.

Delete-endpoint

Archive a Quicknode endpoint by its ID.

Delete-endpoint-method-rate-limit

Delete a method-specific rate limit from a Quicknode endpoint.

Delete-security-rule

Delete a security rule from a Quicknode endpoint.

Disable-tooling-access

Disable account-level Quicknode Tooling Access.

Enable-tooling-access

Enable account-level Quicknode Tooling Access.

Get-billing

Get billing data for the user's Quicknode account.

Get-endpoint

Get a specific web3 Quicknode endpoint details by id

Get-endpoint-log-details

Get detailed request and response information for a specific log entry.

Get-endpoint-metrics

Get metrics for a specific Quicknode endpoint.

Get-rpc-usage

Get the usage data for the user's Quicknode RPC account.

List-chains

List all chains and network slugs supported by Quicknode.

List-endpoint-logs

List the request/response logs for a specific Quicknode endpoint

List-endpoint-method-rate-limits

List all method rate limits for a specific Quicknode endpoint

List-endpoints

Get web3 Quicknode endpoints for the user, this is a list of all the endpoints that the user has created across all chains and networks.

List-endpoint-security

List all security options and rules for a Quicknode endpoint.

Update-endpoint-method-rate-limit

Update an existing method-specific rate limit for a Quicknode endpoint

Update-endpoint-rate-limits

Update the general rate limits (RPS, RPM, RPD) for a Quicknode endpoint.

Update-endpoint-security-options

Update security options for a specific Quicknode endpoint

FRAMEWORKS

How to build QuickNode MCP Agent with another framework

ChatGPT

Use QuickNode MCP with ChatGPT

Hermes

Use QuickNode MCP with Hermes

Atomic Agent

Use QuickNode MCP with Atomic Agent

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FAQ

Frequently asked questions

With a standalone QuickNode MCP server, the agents and LLMs can only access a fixed set of QuickNode tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from QuickNode and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right QuickNode tools.

Yes, absolutely. You can configure which QuickNode scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your QuickNode data and credentials are handled as safely as possible.

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