Blockchain

Blocknative

Learn how to use Blocknative with Composio

Overview

SLUG: BLOCKNATIVE

Description

Blocknative provides real-time mempool monitoring and transaction management tools for public blockchains.

Authentication Details

generic_api_key
stringRequired

Connecting to Blocknative

Create an auth config

Use the dashboard to create an auth config for the Blocknative toolkit. This allows you to connect multiple Blocknative accounts to Composio for agents to use.

1

Select App

Navigate to the Blocknative toolkit page and click “Setup Integration”.

2

Configure Auth Config Settings

Select among the supported auth schemes of and configure them here.

3

Create and Get auth config ID

Click “Create Integration”. After creation, copy the displayed ID starting with ac_. This is your auth config ID. This is not a sensitive ID — you can save it in environment variables or a database. This ID will be used to create connections to the toolkit for a given user.

Connect Your Account

Using API Key

1from composio import Composio
2from composio.types import auth_scheme
3
4# Replace these with your actual values
5blocknative_auth_config_id = "ac_YOUR_BLOCKNATIVE_CONFIG_ID" # Auth config ID created above
6user_id = "0000-0000-0000"  # UUID from database/app
7
8composio = Composio()
9
10def authenticate_toolkit(user_id: str, auth_config_id: str):
11    # Replace this with a method to retrieve an API key from the user.
12    # Or supply your own.
13    user_api_key = input("[!] Enter API key")
14
15    connection_request = composio.connected_accounts.initiate(
16        user_id=user_id,
17        auth_config_id=auth_config_id,
18        config={"auth_scheme": "API_KEY", "val": user_api_key}
19    )
20
21    # API Key authentication is immediate - no redirect needed
22    print(f"Successfully connected Blocknative for user {user_id}")
23    print(f"Connection status: {connection_request.status}")
24    
25    return connection_request.id
26
27
28connection_id = authenticate_toolkit(user_id, blocknative_auth_config_id)
29
30# You can verify the connection using:
31connected_account = composio.connected_accounts.get(connection_id)
32print(f"Connected account: {connected_account}")

Tools

Executing tools

To prototype you can execute some tools to see the responses and working on the Blocknative toolkit’s playground

Python
1from composio import Composio
2from openai import OpenAI
3import json
4
5openai = OpenAI()
6composio = Composio()
7
8# User ID must be a valid UUID format
9user_id = "0000-0000-0000"  # Replace with actual user UUID from your database
10
11tools = composio.tools.get(user_id=user_id, toolkits=["BLOCKNATIVE"])
12
13print("[!] Tools:")
14print(json.dumps(tools))
15
16def invoke_llm(task = "What can you do?"):
17    completion = openai.chat.completions.create(
18        model="gpt-4o",
19        messages=[
20            {
21                "role": "user",
22                "content": task,  # Your task here!
23            },
24        ],
25        tools=tools,
26    )
27
28    # Handle Result from tool call
29    result = composio.provider.handle_tool_calls(user_id=user_id, response=completion)
30    print(f"[!] Completion: {completion}")
31    print(f"[!] Tool call result: {result}")
32
33invoke_llm()

Tool List

Tool Name: Configure Mempool Filters

Description

Tool to configure filters and abi decoding for ethereum mempool transactions. use after establishing a blocknative websocket connection to set up event filters and decoding.

Action Parameters

categoryCode
stringRequired
config
objectRequired
eventCode
stringRequired

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Get Gas Price Distribution

Description

Tool to retrieve the current mempool gas price distribution breakdown. use when analyzing gas price trends or preparing fee strategies.

Action Parameters

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Get Gas Oracles

Description

Tool to retrieve metadata on supported gas oracles per chain. use when you need to dynamically discover all available on-chain gas estimation oracles across networks.

Action Parameters

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Get Gas Prices

Description

Tool to fetch gas price estimates for specific inclusion probabilities. use when you need gas price ranges for the next block or next ~10 seconds.

Action Parameters

chainid
integerDefaults to 1
confidenceLevels
array
network
string
system
string

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Get Supported Chains

Description

Tool to retrieve supported chains metadata. use when discovering available networks for blocknative gas services.

Action Parameters

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Get Base Fee Estimates

Description

Tool to get real-time predictions for base fee and blob base fee for the next 5 blocks. use when you need both 99% and 50% confidence estimates for upcoming blocks.

Action Parameters

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Subscribe Multichain

Description

Tool to generate websocket subscription details for events across multiple chains. use when preparing to track a transaction hash or account address across chains via blocknative multichain sdk.

Action Parameters

abi
array
chainId
stringRequired
filters
array
id
stringRequired
type
stringRequired

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Subscribe Transaction Hash

Description

Tool to subscribe to transaction state change events of an ethereum transaction hash. use after establishing a blocknative websocket connection to prepare the subscription message.

Action Parameters

hash
stringRequired

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Unsubscribe Multichain

Description

Tool to unsubscribe from events across multiple chains using the multichain sdk. use after stopping monitoring of an address or transaction to clean up resources, e.g., call: blocknative.unsubscribe({ id: '0x..', chainid: '0x1' }).

Action Parameters

chainId
Required
id
Required

Action Response

data
objectRequired
error
string
successful
booleanRequired

Tool Name: Unsubscribe Transaction Hash

Description

Tool to unsubscribe from transaction state change events for an ethereum transaction hash. use after establishing a blocknative websocket connection to prepare the unsubscription message.

Action Parameters

hash
stringRequired

Action Response

data
objectRequired
error
string
successful
booleanRequired