Blocknative Integration for AI Agents

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Blocknative MCP or direct API to monitor mempool activity, track pending transactions, analyze gas fees, and detect transaction status changes through natural language.
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Supported Tools

Tools
Configure Mempool FiltersTool to configure filters and abi decoding for ethereum mempool transactions.
Get Gas Price DistributionTool to retrieve the current mempool gas price distribution breakdown.
Get Gas OraclesTool to retrieve metadata on supported gas oracles per chain.
Get Gas PricesTool to fetch gas price estimates for specific inclusion probabilities.
Get Supported ChainsTool to retrieve supported chains metadata.
Get Base Fee EstimatesTool to get real-time predictions for base fee and blob base fee for the next 5 blocks.
Subscribe MultichainTool to generate websocket subscription details for events across multiple chains.
Subscribe Transaction HashTool to subscribe to transaction state change events of an ethereum transaction hash.
Unsubscribe MultichainTool to unsubscribe from events across multiple chains using the multichain sdk.
Unsubscribe Transaction HashTool to unsubscribe from transaction state change events for an ethereum transaction hash.

Connect Blocknative MCP Tool with your Agent

Python
TypeScript

Install Composio

python
pip install composio claude-agent-sdk
Install the Composio SDK and Claude Agent SDK

Create Tool Router Session

python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
Initialize the Composio client and create a Tool Router session

Connect to AI Agent

python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Blocknative tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Get gas price estimates for Ethereum mainnet')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
Use the MCP server with your AI agent

Connect Blocknative API Tool with your Agent

Python
TypeScript

Install Composio

python
pip install composio_openai
Install the Composio SDK

Initialize Composio and Create Tool Router Session

python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
Import and initialize Composio client, then create a Tool Router session

Execute Blocknative Tools via Tool Router with Your Agent

python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Show me the real-time gas price distribution for Ethereum mainnet right now.'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
Get tools from Tool Router session and execute Blocknative actions with your Agent

Why Use Composio?

AI Native Blocknative Integration

  • Supports both Blocknative MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your Blocknative data

Managed Auth

  • Central place to manage, scope, and revoke Blocknative API key access
  • No more hard-coded secrets—Composio handles credentials for every user and environment
  • API key securely stored and rotated when needed

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Blocknative
  • Scoped, least privilege access to Blocknative resources
  • Full audit trail of agent actions to support review and compliance

Use Blocknative with any AI Agent Framework

Choose a Framework you want to connect Blocknative with

Frequently Asked Questions

Do I need my own developer credentials to use Blocknative with Composio?

Yes, Blocknative requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Used by agents from

Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.

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