Blockchair (Universal Blockchain Search Engine & API) Connector for AI agents.
11 live capabilities
Query real-time blockchain data across 20+ networks including Bitcoin and Ethereum.
Waiting for input…
Why people use Blockchair (Universal Blockchain Search Engine & API)
Blockchair Blockchain Explorer Pain
This Connector puts all that data into your agent. You just ask for the info, and the agent handles the multi-chain queries. You get clean data points without the tab fatigue.
What Vinkius changes
You get a universal blockchain search engine inside your AI client.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Debugging a failed contract
A developer asks the agent to check internal calls for a specific transaction using get_contract_calls to find where a smart contract failed.
- Real-world use case 02
Researching fee trends
An analyst asks for all Bitcoin transactions with fees over 50,000 satoshis from the last 24 hours using filter_transactions.
- Real-world use case 03
Portfolio tracking
A user wants to see the balance of a specific ERC-20 token for a list of addresses using get_erc20_token_address.
Complete set · 11capabilities
The complete Blockchair (Universal Blockchain Search Engine & API) capability set.
These are the exact actions your AI can choose when you ask it to work with Blockchair (Universal Blockchain Search Engine & API).
01—04
4 capabilities in this set.
Part of 11 available through Blockchair (Universal Blockchain Search Engine & API).
- 01 Capability
Get blockchain stats
Pull general network health data like block height and difficulty.
- 02 Capability
Get transaction
Get the specific details of a single transaction hash.
- 03 Capability
Get xpub
Fetch and analyze data for an entire HD wallet using an extended public key.
- 04 Capability
Push transaction
Broadcast a raw hex-encoded transaction directly to the blockchain.
05—08
4 capabilities in this set.
Part of 11 available through Blockchair (Universal Blockchain Search Engine & API).
- 05 Capability
Validate address
Check if a specific address is valid for a chosen blockchain network.
- 06 Capability
Get block
Get the full details of a specific block on the network.
- 07 Capability
Get contract calls
Access internal Ethereum contract transactions for deeper debugging.
- 08 Capability
Get erc20 token address
Check the balance of a specific ERC-20 token for any given address.
09—11
3 capabilities in this set.
Part of 11 available through Blockchair (Universal Blockchain Search Engine & API).
- 09 Capability
Filter blocks
Query blocks using SQL-like filters for things like time ranges or transaction counts.
- 10 Capability
Filter transactions
Filter transactions based on specific criteria like fees, values, or timestamps.
- 11 Capability
Get address
Retrieve the balance, history, and UTXO set for a specific wallet address.
Set up in minutes
One URL. Then ask Blockchair (Universal Blockchain Search Engine & API) to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Blockchair (Universal Blockchain Search Engine & API) from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it Blockchair (Universal Blockchain Search Engine & API), and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable Blockchair (Universal Blockchain Search Engine & API) for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the Blockchair (Universal Blockchain Search Engine & API) URL.
- Step 03
Save and start
Save the connection and enable Blockchair (Universal Blockchain Search Engine & API) in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"blockchair-universal-blockchain-search-engine-api": {
"url": "https://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using Blockchair (Universal Blockchain Search Engine & API)
Open Agent mode in chat and ask: "Using Blockchair (Universal Blockchain Search Engine & API), help me...". 11 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"blockchair-universal-blockchain-search-engine-api": {
"url": "https://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using Blockchair (Universal Blockchain Search Engine & API)
Ask Copilot: "Using Blockchair (Universal Blockchain Search Engine & API), help me...". 11 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"blockchair-universal-blockchain-search-engine-api": {
"url": "https://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using Blockchair (Universal Blockchain Search Engine & API)
Open Cascade and ask: "Using Blockchair (Universal Blockchain Search Engine & API), help me...". 11 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"blockchair-universal-blockchain-search-engine-api": {
"url": "https://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using Blockchair (Universal Blockchain Search Engine & API)
Ask Cline: "Using Blockchair (Universal Blockchain Search Engine & API), help me...". 11 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add blockchair-universal-blockchain-search-engine-api --transport http "https://edge.vinkius.com/vk_preview_5UGquZAtkUXwg20SDzhN0BLiU6oYCsjOeodEugDs/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using Blockchair (Universal Blockchain Search Engine & API)
Ask Claude: "Using Blockchair (Universal Blockchain Search Engine & API), show me...". 11 tools are ready
Where the request belongs
Work Blockchair can move forward.
This Connector is for the Web3 developer tired of manual debugging, the data analyst building crypto reports, and the enthusiast who needs to track balances across multiple chains without the friction of switching explorers.
Web3 Developer
Debugging smart contract states and transaction flows in your IDE.
Data Analyst
Extracting specific blockchain datasets for research and reporting.
Crypto Enthusiast
Monitoring network congestion and tracking wallet balances across chains.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
Browse ConnectorsBlockCypher (Multi-chain Blockchain Developer API)
Access multi-chain blockchain data for BTC, ETH, and more. Query blocks, addresses, and transactions or broadcast new ones directly through AI.
Blockchain.com Data
Access real-time Bitcoin blockchain data via Blockchain.com. query blocks, transactions, and addresses directly from any AI agent.
OKLink (Multi-chain Web3 Blockchain Data API)
Access real-time blockchain data across multiple chains—query addresses, tokens, transactions, and blocks directly from your AI agent.
Blockdaemon (Blockchain Infrastructure)
Access institutional-grade blockchain data across multiple protocols. list blocks, track transactions, and retrieve financial reports via Blockdaemon Ubiquity.
Dogechain Explorer (Dogechain Block Explorer API)
Automate Dogecoin blockchain analysis via Dogechain. check address balances, inspect transactions, and query block data directly from any AI agent.
Blockscout
Explore Ethereum-based blockchains directly from your AI agent. Query addresses, tokens, transactions, and smart contracts via Blockscout's open-source API.
Bring your own AI
Change the model, client or framework. Keep Blockchair connected.
-
Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
Kiro -
Roo Code -
Zencoder -
Goose -
Void -
Augment Code -
Amp -
Qodo -
Tabnine -
Pieces -
Sourcegraph Cody -
JetBrains -
Warp -
Amazon Q -
Antigravity -
BoltAI -
Raycast -
Jan -
LM Studio -
AnythingLLM -
Open WebUI -
Msty -
Cherry Studio -
LibreChat -
TypingMind -
Chorus -
5ire -
n8n -
LangChain -
LlamaIndex -
CrewAI -
Vercel AI SDK
Before you connect
Questions about Blockchair.
The practical details behind the request, access and result.
Can Blockchair MCP track both Bitcoin and Ethereum?
Yes, it provides a universal way to query data across 20+ networks, including Bitcoin and Ethereum, from a single interface.
How do I use Blockchair MCP to find high-fee transactions?
You can simply describe the fee requirements and the time range you're interested in, and the agent will filter the blockchain data for you.
Does Blockchair MCP support HD wallets?
Yes, it can retrieve and analyze data for entire HD wallets by using an extended public key (xpub).
Can I use Blockchair MCP to debug smart contracts?
Yes, it can pull internal Ethereum contract calls, which is essential for seeing what's happening inside a smart contract transaction.
Is Blockchair MCP good for data research?
It's excellent for research because it supports SQL-like filtering, allowing you to extract specific datasets based on fees, values, or dates.
How do I get network stats with Blockchair MCP?
Just ask your agent for the stats of a specific chain, and it will return the current block height, difficulty, and other health metrics.
Can I search across different blockchains using this server?
Yes! You can specify the blockchain (e.g., 'bitcoin', 'ethereum', 'dogecoin') in capabilities like get_blockchain_stats or get_address to retrieve data from that specific network.
How do I filter transactions by specific criteria like high fees?
Use the filter_transactions capability. You can provide a query string q such as fee(10000..) to find transactions with fees over 10,000 units, and sort them using the s parameter.
Can I check the balance of a specific ERC-20 token on Ethereum?
Yes, use the get_erc20_token_address capability by providing the token's contract address and the wallet address you want to check.
One connection away
Give your agent a direct line to Blockchair.
Connect Blockchair once. Keep it beside 5,900+ managed Connectors when the next task needs more.
Explore every Connector No credit card required · Free tier available