Bankless Onchain MCP Server
官方查詢鏈上數據,例如ERC20代幣、交易歷史、智能合約狀態。
文件
Bankless Onchain MCP 伺服器
本專案已不再接收更新
用於透過 Bankless API 與區塊鏈資料互動的 MCP(模型上下文協定)伺服器。
概述
Bankless Onchain MCP 伺服器提供了一個框架,用於透過 Bankless API 與鏈上資料互動。它實作了模型上下文協定(MCP),讓 AI 模型能以結構化的方式存取區塊鏈狀態和事件資料。
https://github.com/user-attachments/assets/95732dff-ae5f-45a6-928a-1ae17c0ddf9d
功能特色
此伺服器提供下列鏈上資料操作:
合約操作
-
讀取合約狀態 (
read_contract):從各種區塊鏈網路讀取智慧合約的狀態。- 參數:網路、合約地址、方法、輸入、輸出
- 回傳:包含型別化值的合約呼叫結果
-
取得代理合約 (
get_proxy):擷取代理實作合約地址。- 參數:網路、合約地址
- 回傳:實作合約地址
-
取得 ABI (
get_abi):取得合約的 ABI(應用程式二進位介面)。- 參數:網路、合約地址
- 回傳:JSON 格式的合約 ABI
-
取得原始碼 (
get_source):擷取已驗證合約的原始碼。- 參數:網路、合約地址
- 回傳:原始碼、ABI、編譯器版本及其他合約中繼資料
事件操作
-
取得事件 (
get_events):根據主題取得合約的事件日誌。- 參數:網路、地址、主題、可選的額外主題
- 回傳:篩選後的事件日誌
-
建立事件主題 (
build_event_topic):從事件名稱和引數型別產生事件主題簽章。- 參數:網路、事件名稱、引數型別
- 回傳:事件主題雜湊值
交易操作
-
取得交易歷史 (
get_transaction_history):擷取使用者地址的交易歷史。- 參數:網路、使用者地址、可選的合約、可選的方法 ID、可選的起始區塊、包含資料旗標
- 回傳:包含雜湊值、資料、網路和時間戳的交易清單
-
取得交易資訊 (
get_transaction_info):取得特定交易的詳細資訊。- 參數:網路、交易雜湊值
- 回傳:交易詳細資訊,包含區塊號碼、時間戳、發送/接收地址、金額、Gas 資訊、狀態和收據資料
工具
-
read_contract
- 從區塊鏈讀取合約狀態
- 輸入:
network(字串,必要):區塊鏈網路(例如 "ethereum"、"polygon")contract(字串,必要):合約地址method(字串,必要):要呼叫的合約方法inputs(陣列,必要):方法呼叫的輸入參數,每個參數包含:type(字串):輸入參數的型別(例如 "address"、"uint256")value(任意):輸入參數的值
outputs(陣列,必要):預期的輸出型別,每個包含:type(字串):預期的輸出型別
- 回傳合約呼叫結果的陣列
-
get_proxy
- 取得指定網路和合約的代理合約地址
- 輸入:
network(字串,必要):區塊鏈網路(例如 "ethereum"、"base")contract(字串,必要):合約地址
- 回傳代理合約的實作地址
-
get_events
- 根據指定網路和篩選條件取得事件日誌
- 輸入:
network(字串,必要):區塊鏈網路(例如 "ethereum"、"base")addresses(陣列,必要):用於篩選事件的合約地址清單topic(字串,必要):用於篩選事件的主要主題optionalTopics(陣列,可選):可選的額外主題(可包含 null 值)
- 回傳符合篩選條件的事件日誌物件
-
build_event_topic
- 根據事件名稱和引數建立事件主題簽章
- 輸入:
network(字串,必要):區塊鏈網路(例如 "ethereum"、"base")name(字串,必要):事件名稱(例如 "Transfer(address,address,uint256)")arguments(陣列,必要):事件引數型別,每個包含:type(字串):引數型別(例如 "address"、"uint256")
- 回傳包含事件簽章 keccak256 雜湊值的字串
安裝
npm install @bankless/onchain-mcp
使用方式
環境設定
使用伺服器前,請設定您的 Bankless API 權杖。有關如何取得 Bankless API 權杖的詳細資訊,請前往 https://docs.bankless.com/bankless-api/other-services/onchain-mcp
export BANKLESS_API_TOKEN=your_api_token_here
執行伺服器
伺服器可直接從命令列執行:
npx @bankless/onchain-mcp
與 LLM 工具搭配使用
此伺服器實作了模型上下文協定(MCP),使其可作為相容 AI 模型的工具提供者。以下是每個工具的範例呼叫:
read_contract
// Example call
{
"name": "read_contract",
"arguments": {
"network": "ethereum",
"contract": "0x1234...",
"method": "balanceOf",
"inputs": [
{ "type": "address", "value": "0xabcd..." }
],
"outputs": [
{ "type": "uint256" }
]
}
}
// Example response
[
{
"value": "1000000000000000000",
"type": "uint256"
}
]
get_proxy
// Example call
{
"name": "get_proxy",
"arguments": {
"network": "ethereum",
"contract": "0x1234..."
}
}
// Example response
{
"implementation": "0xefgh..."
}
get_events
// Example call
{
"name": "get_events",
"arguments": {
"network": "ethereum",
"addresses": ["0x1234..."],
"topic": "0xabcd...",
"optionalTopics": ["0xef01...", null]
}
}
// Example response
{
"result": [
{
"removed": false,
"logIndex": 5,
"transactionIndex": 2,
"transactionHash": "0x123...",
"blockHash": "0xabc...",
"blockNumber": 12345678,
"address": "0x1234...",
"data": "0x...",
"topics": ["0xabcd...", "0xef01...", "0x..."]
}
]
}
build_event_topic
// Example call
{
"name": "build_event_topic",
"arguments": {
"network": "ethereum",
"name": "Transfer(address,address,uint256)",
"arguments": [
{ "type": "address" },
{ "type": "address" },
{ "type": "uint256" }
]
}
}
// Example response
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
開發
從原始碼建置
# Clone the repository
git clone https://github.com/Bankless/onchain-mcp.git
cd onchain-mcp
# Install dependencies
npm install
# Build the project
npm run build
除錯模式
npm run debug
與 AI 模型整合
若要將此伺服器與支援 MCP 的 AI 應用程式整合,請將以下內容新增至您應用程式的伺服器設定:
{
"mcpServers": {
"bankless": {
"command": "npx",
"args": [
"@bankless/onchain-mcp"
],
"env": {
"BANKLESS_API_TOKEN": "your_api_token_here"
}
}
}
}
錯誤處理
伺服器針對不同情境提供特定的錯誤型別:
BanklessValidationError:無效的輸入參數BanklessAuthenticationError:API 權杖問題BanklessResourceNotFoundError:找不到請求的資源BanklessRateLimitError:超出 API 速率限制
提示技巧
為了引導 LLM 模型使用 Bankless Onchain MCP 伺服器,可以使用以下提示:
ROLE:
• You are Kompanion, a blockchain expert and EVM sleuth.
• You specialize in navigating and analyzing smart contracts using your tools and resources.
HOW KOMPANION CAN HANDLE PROXY CONTRACTS:
• If a contract is a proxy, call your “get_proxy” tool to fetch the implementation contract.
• If that fails, try calling the “implementation” method on the proxy contract.
• If that also fails, try calling the “_implementation” function.
• After obtaining the implementation address, call “get_contract_source” with that address to fetch its source code.
• When reading or modifying the contract state, invoke implementation functions on the proxy contract address (not directly on the implementation).
HOW KOMPANION CAN HANDLE EVENTS:
• Get the ABI and Source of the relevant contracts
• From the event types in the ABI, construct the correct topics for the event relevant to the question
• use the "get_event_logs" tool to fetch logs for the contract
KOMPANION'S RULES:
• Do not begin any response with “Great,” “Certainly,” “Okay,” or “Sure.”
• Maintain a direct, technical style. Do not add conversational flourishes.
• If the user’s question is unrelated to smart contracts, do not fetch any contracts.
• If you navigate contracts, explain each step in bullet points.
• Solve tasks iteratively, breaking them into steps.
• Use bullet points for lists of steps.
• Never assume a contract’s functionality. Always verify with examples using your tools to read the contract state.
• Before responding, consider which tools might help you gather better information.
• Include as much relevant information as possible in your final answer, depending on your findings.
HOW KOMPANION CAN USE TOOLS:
• You can fetch contract source codes, ABIs, and read contract data by using your tools and functions.
• Always verify the source or ABI to understand the contract rather than making assumptions.
• If you need to read contract state, fetch its ABI (especially if the source is lengthy).
FINAL INSTRUCTION:
• Provide the best possible, concise answer to the user’s request. If it's not an immediate question but an instruction, follow it directly.
• Use your tools to gather any necessary clarifications or data.
• Offer a clear, direct response and add a summary of what you did (how you navigated the contracts) at the end.
授權條款
MIT