Hosted MCP server · #79 most used on Smithery
Boar blockchain MCP (basic)
boar-network/blockchain-basic
Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required - just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.
- Uses
- 6.5k
- Tools
- 37
- Runs
- Hosted
- Listed
- 7mo ago
Get started
Add it to your agent
npx -y @smithery/cli@latest install boar-network/blockchain-basic --client claudeSwap --client claude for cursor, vscode, windsurf or another client. The CLI asks for any required settings.
claude mcp add --transport http boar-blockchain-mcp-basic https://server.smithery.ai/boar-network/blockchain-basic/mcpA hosted server: nothing to install. Run /mcp in Claude Code to sign in if it asks.
[mcp_servers.boar-blockchain-mcp-basic]
url = "https://server.smithery.ai/boar-network/blockchain-basic/mcp"Add to ~/.codex/config.toml.
{
"mcpServers": {
"boar-blockchain-mcp-basic": {
"url": "https://server.smithery.ai/boar-network/blockchain-basic/mcp"
}
}
}Add to ~/.cursor/mcp.json.
{
"servers": {
"boar-blockchain-mcp-basic": {
"type": "http",
"url": "https://server.smithery.ai/boar-network/blockchain-basic/mcp"
}
}
}Add to .vscode/mcp.json.
gemini mcp add --transport http boar-blockchain-mcp-basic https://server.smithery.ai/boar-network/blockchain-basic/mcpSaved to .gemini/settings.json.
What it can do
37 tools
eth_get_balance1 paramGet native token balance for an address on Ethereum mainnet. Returns balance in wei (hex and decimal) and in ether.
| Parameter | Type | Description |
|---|---|---|
address | string |
eth_get_block1 paramGet block data by number or tag on Ethereum mainnet. Use hex block number (e.g. "0x1") or "latest". Returns full block object with transa…
Get block data by number or tag on Ethereum mainnet. Use hex block number (e.g. "0x1") or "latest". Returns full block object with transaction hashes.
| Parameter | Type | Description |
|---|---|---|
block | string | Block number as hex (e.g. "0x1") or tag ("latest", "earliest", "pending") |
eth_get_transaction1 paramGet transaction details by hash on Ethereum mainnet. Returns full transaction object including from, to, value, input data, and status.
| Parameter | Type | Description |
|---|---|---|
hash | string | Transaction hash (32 bytes, hex-encoded with 0x prefix) |
eth_get_logs4 paramsGet event logs matching a filter on Ethereum mainnet. Requires at least fromBlock and toBlock. Optionally filter by contract address and …
Get event logs matching a filter on Ethereum mainnet. Requires at least fromBlock and toBlock. Optionally filter by contract address and topics.
| Parameter | Type | Description |
|---|---|---|
topics | array | Array of topic filters. Each element is a topic hash, null for wildcard, or an array of topic hashes for OR matching. |
address | string | Contract address to filter logs |
toBlock | string | Block number as hex (e.g. "0x1") or tag ("latest", "earliest", "pending") |
fromBlock | string | Block number as hex (e.g. "0x1") or tag ("latest", "earliest", "pending") |
eth_gas_priceGet current gas price on Ethereum mainnet in wei (hex string). Use to estimate transaction costs.
eth_estimate_gas4 paramsEstimate gas required for a transaction on Ethereum mainnet. Returns gas estimate as hex string.
| Parameter | Type | Description |
|---|---|---|
to | string | Destination address |
data | string | ABI-encoded call data |
from | string | Sender address |
value | string | Value to send in wei (hex) |
eth_get_transaction_receipt1 paramGet transaction receipt by hash on Ethereum mainnet. Returns status (0x1=success, 0x0=fail), gasUsed, contractAddress (for contract deplo…
Get transaction receipt by hash on Ethereum mainnet. Returns status (0x1=success, 0x0=fail), gasUsed, contractAddress (for contract deployments), and event logs.
| Parameter | Type | Description |
|---|---|---|
hash | string | Transaction hash (32 bytes, hex-encoded with 0x prefix) |
eth_get_code2 paramsGet bytecode at an address on Ethereum mainnet. Returns "0x" for EOAs (wallets), non-empty hex for contracts. Use to determine if an addr…
Get bytecode at an address on Ethereum mainnet. Returns "0x" for EOAs (wallets), non-empty hex for contracts. Use to determine if an address is a contract or EOA, and to retrieve deployed bytecode.
| Parameter | Type | Description |
|---|---|---|
block | string | Block to query (default: "latest") |
address | string |
eth_get_token_balance2 paramsGet ERC-20 token balance for a wallet address on Ethereum mainnet. Returns raw balance, formatted balance with decimals, and token symbol…
Get ERC-20 token balance for a wallet address on Ethereum mainnet. Returns raw balance, formatted balance with decimals, and token symbol. Calls balanceOf, decimals, and symbol on the token contract.
| Parameter | Type | Description |
|---|---|---|
token | string | ERC-20 token contract address |
wallet | string | Wallet address to check balance for |
eth_get_token_info1 paramGet ERC-20 token metadata for a token address on Ethereum mainnet. Returns name, symbol, decimals, and total supply (raw and formatted). …
Get ERC-20 token metadata for a token address on Ethereum mainnet. Returns name, symbol, decimals, and total supply (raw and formatted). Degrades gracefully — any individual call failure returns null for that field.
| Parameter | Type | Description |
|---|---|---|
token | string | ERC-20 token contract address |
mezo_get_balance1 paramGet native token balance for an address on Mezo. Returns balance in wei (hex and decimal) and in ether.
| Parameter | Type | Description |
|---|---|---|
address | string |
mezo_get_block1 paramGet block data by number or tag on Mezo. Use hex block number (e.g. "0x1") or "latest". Returns full block object with transaction hashes.
| Parameter | Type | Description |
|---|---|---|
block | string | Block number as hex (e.g. "0x1") or tag ("latest", "earliest", "pending") |
mezo_get_transaction1 paramGet transaction details by hash on Mezo. Returns full transaction object including from, to, value, input data, and status.
| Parameter | Type | Description |
|---|---|---|
hash | string | Transaction hash (32 bytes, hex-encoded with 0x prefix) |
mezo_get_logs4 paramsGet event logs matching a filter on Mezo. Requires at least fromBlock and toBlock. Optionally filter by contract address and topics.
| Parameter | Type | Description |
|---|---|---|
topics | array | Array of topic filters. Each element is a topic hash, null for wildcard, or an array of topic hashes for OR matching. |
address | string | Contract address to filter logs |
toBlock | string | Block number as hex (e.g. "0x1") or tag ("latest", "earliest", "pending") |
fromBlock | string | Block number as hex (e.g. "0x1") or tag ("latest", "earliest", "pending") |
mezo_gas_priceGet current gas price on Mezo in wei (hex string). Use to estimate transaction costs.
mezo_get_transaction_receipt1 paramGet transaction receipt by hash on Mezo. Returns status (0x1=success, 0x0=fail), gasUsed, contractAddress (for contract deployments), and…
Get transaction receipt by hash on Mezo. Returns status (0x1=success, 0x0=fail), gasUsed, contractAddress (for contract deployments), and event logs.
| Parameter | Type | Description |
|---|---|---|
hash | string | Transaction hash (32 bytes, hex-encoded with 0x prefix) |
mezo_get_code2 paramsGet bytecode at an address on Mezo. Returns "0x" for EOAs (wallets), non-empty hex for contracts. Use to determine if an address is a con…
Get bytecode at an address on Mezo. Returns "0x" for EOAs (wallets), non-empty hex for contracts. Use to determine if an address is a contract or EOA, and to retrieve deployed bytecode.
| Parameter | Type | Description |
|---|---|---|
block | string | Block to query (default: "latest") |
address | string |
mezo_get_token_balance2 paramsGet ERC-20 token balance for a wallet address on Mezo. Returns raw balance, formatted balance with decimals, and token symbol. Calls bala…
Get ERC-20 token balance for a wallet address on Mezo. Returns raw balance, formatted balance with decimals, and token symbol. Calls balanceOf, decimals, and symbol on the token contract.
| Parameter | Type | Description |
|---|---|---|
token | string | ERC-20 token contract address |
wallet | string | Wallet address to check balance for |
mezo_get_token_info1 paramGet ERC-20 token metadata for a token address on Mezo. Returns name, symbol, decimals, and total supply (raw and formatted). Degrades gra…
Get ERC-20 token metadata for a token address on Mezo. Returns name, symbol, decimals, and total supply (raw and formatted). Degrades gracefully — any individual call failure returns null for that field.
| Parameter | Type | Description |
|---|---|---|
token | string | ERC-20 token contract address |
btc_get_balance1 paramGet confirmed and unconfirmed balance for a Bitcoin address on Bitcoin mainnet. Returns balance in satoshis.
| Parameter | Type | Description |
|---|---|---|
address | string | Bitcoin address (P2PKH, P2SH, P2WPKH, P2WSH, or P2TR) |
btc_get_history1 paramGet transaction history for a Bitcoin address on Bitcoin mainnet. Returns list of transactions with heights and tx hashes.
| Parameter | Type | Description |
|---|---|---|
address | string | Bitcoin address (P2PKH, P2SH, P2WPKH, P2WSH, or P2TR) |
btc_get_utxos1 paramGet unspent transaction outputs (UTXOs) for a Bitcoin address on Bitcoin mainnet. Returns list of unspent outputs with tx hash, position,…
Get unspent transaction outputs (UTXOs) for a Bitcoin address on Bitcoin mainnet. Returns list of unspent outputs with tx hash, position, height, and value in satoshis.
| Parameter | Type | Description |
|---|---|---|
address | string | Bitcoin address (P2PKH, P2SH, P2WPKH, P2WSH, or P2TR) |
btc_get_transaction1 paramGet full transaction details by txid on Bitcoin mainnet. Returns verbose transaction data including inputs, outputs, confirmations, and b…
Get full transaction details by txid on Bitcoin mainnet. Returns verbose transaction data including inputs, outputs, confirmations, and block hash.
| Parameter | Type | Description |
|---|---|---|
txid | string | Transaction ID (64 hex characters) |
btc_get_block1 paramGet block header data by height on Bitcoin mainnet. Returns parsed header with hash, version, previous block hash, merkle root, timestamp…
Get block header data by height on Bitcoin mainnet. Returns parsed header with hash, version, previous block hash, merkle root, timestamp, bits, and nonce.
| Parameter | Type | Description |
|---|---|---|
height | integer | Block height |
btc_get_fee_estimate1 paramGet fee rate estimate on Bitcoin mainnet for a target number of blocks. Returns estimated fee in BTC/kB and sat/byte. Use target=1 for ne…
Get fee rate estimate on Bitcoin mainnet for a target number of blocks. Returns estimated fee in BTC/kB and sat/byte. Use target=1 for next-block, target=6 for ~1 hour. Returns -1 if no estimate available.
| Parameter | Type | Description |
|---|---|---|
target | integer | Target number of blocks for confirmation (default: 6) |
btc_get_mempool_infoGet mempool fee histogram on Bitcoin mainnet. Returns array of [fee_rate, cumulative_vsize] pairs showing the distribution of transaction…
Get mempool fee histogram on Bitcoin mainnet. Returns array of [fee_rate, cumulative_vsize] pairs showing the distribution of transactions in the mempool by fee rate (sat/vB).
btc_testnet_get_balance1 paramGet confirmed and unconfirmed balance for a Bitcoin address on Bitcoin testnet3. Returns balance in satoshis.
| Parameter | Type | Description |
|---|---|---|
address | string | Bitcoin address (P2PKH, P2SH, P2WPKH, P2WSH, or P2TR) |
btc_testnet_get_history1 paramGet transaction history for a Bitcoin address on Bitcoin testnet3. Returns list of transactions with heights and tx hashes.
| Parameter | Type | Description |
|---|---|---|
address | string | Bitcoin address (P2PKH, P2SH, P2WPKH, P2WSH, or P2TR) |
btc_testnet_get_utxos1 paramGet unspent transaction outputs (UTXOs) for a Bitcoin address on Bitcoin testnet3. Returns list of unspent outputs with tx hash, position…
Get unspent transaction outputs (UTXOs) for a Bitcoin address on Bitcoin testnet3. Returns list of unspent outputs with tx hash, position, height, and value in satoshis.
| Parameter | Type | Description |
|---|---|---|
address | string | Bitcoin address (P2PKH, P2SH, P2WPKH, P2WSH, or P2TR) |
btc_testnet_get_transaction1 paramGet full transaction details by txid on Bitcoin testnet3. Returns verbose transaction data including inputs, outputs, confirmations, and …
Get full transaction details by txid on Bitcoin testnet3. Returns verbose transaction data including inputs, outputs, confirmations, and block hash.
| Parameter | Type | Description |
|---|---|---|
txid | string | Transaction ID (64 hex characters) |
btc_testnet_get_block1 paramGet block header data by height on Bitcoin testnet3. Returns parsed header with hash, version, previous block hash, merkle root, timestam…
Get block header data by height on Bitcoin testnet3. Returns parsed header with hash, version, previous block hash, merkle root, timestamp, bits, and nonce.
| Parameter | Type | Description |
|---|---|---|
height | integer | Block height |
btc_testnet_get_fee_estimate1 paramGet fee rate estimate on Bitcoin testnet3 for a target number of blocks. Returns estimated fee in BTC/kB and sat/byte. Use target=1 for n…
Get fee rate estimate on Bitcoin testnet3 for a target number of blocks. Returns estimated fee in BTC/kB and sat/byte. Use target=1 for next-block, target=6 for ~1 hour. Returns -1 if no estimate available.
| Parameter | Type | Description |
|---|---|---|
target | integer | Target number of blocks for confirmation (default: 6) |
btc_testnet_get_mempool_infoGet mempool fee histogram on Bitcoin testnet3. Returns array of [fee_rate, cumulative_vsize] pairs showing the distribution of transactio…
Get mempool fee histogram on Bitcoin testnet3. Returns array of [fee_rate, cumulative_vsize] pairs showing the distribution of transactions in the mempool by fee rate (sat/vB).
eth_lookup_selector1 paramLook up a 4-byte function or error selector against 4byte.directory. Returns matching function/error signatures. Useful for identifying u…
Look up a 4-byte function or error selector against 4byte.directory. Returns matching function/error signatures. Useful for identifying unknown calldata selectors or decoding custom errors.
| Parameter | Type | Description |
|---|---|---|
selector | string | 4-byte selector (0x-prefixed, e.g. 0x70a08231) |
eth_get_abi2 paramsFetch a verified contract's ABI from Sourcify by address. Returns the full ABI array and match type ('full' or 'partial'). Returns match_…
Fetch a verified contract's ABI from Sourcify by address. Returns the full ABI array and match type ('full' or 'partial'). Returns match_type 'none' for unverified contracts. Defaults to Ethereum mainnet (chain_id 1).
| Parameter | Type | Description |
|---|---|---|
address | string | Contract address |
chain_id | integer | EVM chain ID (default: 1 for Ethereum mainnet) |
eth_resolve_ens1 paramResolve an ENS name to its Ethereum address. Returns null if the name is not registered or has no address record. Example: 'vitalik.eth' …
Resolve an ENS name to its Ethereum address. Returns null if the name is not registered or has no address record. Example: 'vitalik.eth' → '0xd8dA6BF26964aF9D68eC99A6d99030B4ec93B700'.
| Parameter | Type | Description |
|---|---|---|
name | string | ENS name to resolve (e.g. 'vitalik.eth') |
eth_lookup_address1 paramReverse-resolve an Ethereum address to its primary ENS name. Returns null if no primary ENS name is set for the address.
| Parameter | Type | Description |
|---|---|---|
address | string | Ethereum address to reverse-resolve |