search_smart_contracts_json
Search smart contracts using JSON parameters to filter by verification status, name, language, proxy type, and optimization settings.
Instructions
JSON search for smart contracts with 50+ parameters
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| is_verified | No | Whether the contract is verified | |
| name | No | Contract name | |
| language | No | Programming language (e.g., "solidity") | |
| proxy_type | No | Proxy type (e.g., "eip1967") | |
| optimization_enabled | No | Whether optimization is enabled | |
| limit | No | Number of results to return (default: 10, max: 50) | |
| offset | No | Number of results to skip for pagination (default: 0) |
Implementation Reference
- index.js:526-565 (registration)Registration of the 'search_smart_contracts_json' tool in the ListTools response, including name, description, and input schema definition.
{ name: 'search_smart_contracts_json', description: 'JSON search for smart contracts with 50+ parameters', inputSchema: { type: 'object', properties: { is_verified: { type: 'boolean', description: 'Whether the contract is verified', }, name: { type: 'string', description: 'Contract name', }, language: { type: 'string', description: 'Programming language (e.g., "solidity")', }, proxy_type: { type: 'string', description: 'Proxy type (e.g., "eip1967")', }, optimization_enabled: { type: 'boolean', description: 'Whether optimization is enabled', }, limit: { type: 'integer', description: 'Number of results to return (default: 10, max: 50)', default: 10, }, offset: { type: 'integer', description: 'Number of results to skip for pagination (default: 0)', default: 0, }, }, required: [], }, }, - index.js:762-763 (handler)Handler case in handleToolCall method that executes the tool by calling makeRequest to proxy the API call to ChainFETCH's json_search endpoint for smart contracts.
case 'search_smart_contracts_json': return await this.makeRequest('/api/v1/ethereum/smart-contracts/json_search', 'GET', args, null, token); - index.js:634-682 (helper)Helper method makeRequest that handles the actual HTTP API calls to ChainFETCH, used by all tool handlers including search_smart_contracts_json.
async makeRequest(endpoint, method = 'GET', params = {}, body = null, token = null) { const chainfetchToken = token || process.env.CHAINFETCH_API_TOKEN; if (!chainfetchToken) { throw new McpError( ErrorCode.InvalidRequest, 'CHAINFETCH_API_TOKEN is required' ); } const url = new URL(`${API_BASE_URL}${endpoint}`); // Add query parameters for GET requests if (method === 'GET' && Object.keys(params).length > 0) { Object.entries(params).forEach(([key, value]) => { if (value !== undefined && value !== null) { if (Array.isArray(value)) { value.forEach(v => url.searchParams.append(`${key}[]`, v)); } else { url.searchParams.append(key, value.toString()); } } }); } const fetchOptions = { method, headers: { 'Authorization': `Bearer ${chainfetchToken}`, 'Content-Type': 'application/json', }, }; if (body && method !== 'GET') { fetchOptions.body = JSON.stringify(body); } const response = await fetch(url.toString(), fetchOptions); if (!response.ok) { const errorText = await response.text(); throw new McpError( ErrorCode.InternalError, `API request failed: ${response.status} ${response.statusText} - ${errorText}` ); } return await response.json(); }