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Connect Blocknative Ethereum Mempool API to your AI

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get accurate gas price estimates from live mempool data.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 1 capability

We ship only the actions that matter.

Capability set01 / 01

01

1 capability in this set.

Part of 1 available through Blocknative.

  1. 01

    Get gas prices

    This capability fetches real-time gas price suggestions from the Blocknative API. It provides various confidence levels to help you pick the right fee for your transaction.

Real work

What teams actually run

01

Optimizing DeFi Swaps

A trader asks the agent for the 99% confidence gas price to ensure a swap completes during high volatility.

02

Smart Contract Development

A developer checks current congestion to set appropriate gas limits for testing transactions.

03

Network Health Checks

A user asks if the network is congested before attempting a large transfer.

04

Cost Management

An operator compares the 70% and 99% gas tiers to find the cheapest way to send a non-urgent transaction.

Automate a task

Put Blocknative to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Blocknative works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put Blocknative to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

831ms average. Fast in production.

Blocknative is checked daily against the live service.

Daily averagePeak 1159ms
Oct 3Today
Fastest day
663ms
Slowest day
1159ms
14-day trend
Slowing+57%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 1 capability arrives ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Blocknative, so you can see the experience inside your AI.

It does not authenticate your account with Blocknative. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Blocknative Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_r2AOQnNVS8hTVOpsBxtTmhWn6jPoZpIpgPq4J1Jj/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Blocknative capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "blocknative-ethereum-mempool-api-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_r2AOQnNVS8hTVOpsBxtTmhWn6jPoZpIpgPq4J1Jj/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Blocknative in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Blocknative owners hand off.

This MCP is built for anyone interacting with the Ethereum blockchain who needs precise fee data.

  • 01

    Web3 Developers

    They use the agent to check gas estimates to prevent stuck transactions during development.

  • 02

    DeFi Traders

    They monitor gas spikes to time their swaps and liquidity moves.

  • 03

    Crypto Enthusiasts

    They use natural language to check network congestion levels quickly.

FAQ

Questions Blocknative owners ask.

  • 01

    How does this MCP get gas prices?

    It connects to the Blocknative Gas Platform to pull real-time data directly from the Ethereum mempool.

  • 02

    What do the confidence levels mean?

    The confidence levels, such as 99% or 70%, indicate the probability that your transaction will be included in the next block at that price.

  • 03

    Do I need my own Blocknative account?

    Yes, you will need to enter your own Blocknative API Key to use this MCP.

  • 04

    Can I use this with Cursor or VS Code?

    Yes, any MCP-compatible client like Cursor, VS Code, or Claude can use this capability once connected.

  • 05

    Is this data delayed?

    No, the data is derived from live mempool conditions to provide real-time insights.

  • 06

    How can I get the most accurate gas price for an urgent Ethereum transaction?

    Use the get_gas_prices capability. It fetches high-confidence suggestions directly from Blocknative's mempool monitoring, providing you with the exact values needed for rapid inclusion.

  • 07

    What confidence levels does the gas price capability provide?

    The get_gas_prices capability returns estimations for various confidence intervals (typically 99%, 95%, 90%, 80%, and 70%), allowing you to choose the right balance between cost and certainty.

  • 08

    Does this capability monitor the live Ethereum mempool?

    Yes. The get_gas_prices action leverages Blocknative's global node network to analyze pending transactions in the mempool, ensuring the suggestions reflect current network conditions.

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