getGasPrice
Retrieve current gas prices for Ethereum transactions to optimize transaction costs and timing across different networks.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| provider | No | Optional. Either a network name or custom RPC URL. Use getAllNetworks to see available networks and their details, or getNetwork to get info about a specific network. You can use any network name returned by these tools as a provider value. | |
| chainId | No | Optional. The chain ID to use. If provided with a named network and they don't match, the RPC's chain ID will be used. |
Implementation Reference
- src/tools/core.ts:84-97 (handler)The async handler function that executes the getGasPrice tool. It retrieves the current gas price in wei using ethersService, converts it to gwei, and returns a formatted text response. Handles errors using createErrorResponse.
async ({ provider, chainId }) => { try { const gasPriceWei = await ethersService.getGasPrice(provider, chainId); const gasPriceGwei = ethers.formatUnits(gasPriceWei, "gwei"); return { content: [{ type: "text", text: `Current gas price: ${gasPriceGwei} gwei (${gasPriceWei.toString()} wei)` }] }; } catch (error) { return createErrorResponse(error, 'getting gas price'); } } - src/tools/core.ts:78-83 (schema)Zod schema defining the input parameters for the getGasPrice tool: optional provider (network name or RPC URL) and chainId.
{ provider: z.string().optional().describe(PROVIDER_DESCRIPTION), chainId: z.number().optional().describe( "Optional. The chain ID to use. If provided with a named network and they don't match, the RPC's chain ID will be used." ) }, - src/tools/core.ts:76-98 (registration)Complete registration of the getGasPrice MCP tool using server.tool(name, inputSchema, handler), within the registerCoreTools function.
server.tool( "getGasPrice", { provider: z.string().optional().describe(PROVIDER_DESCRIPTION), chainId: z.number().optional().describe( "Optional. The chain ID to use. If provided with a named network and they don't match, the RPC's chain ID will be used." ) }, async ({ provider, chainId }) => { try { const gasPriceWei = await ethersService.getGasPrice(provider, chainId); const gasPriceGwei = ethers.formatUnits(gasPriceWei, "gwei"); return { content: [{ type: "text", text: `Current gas price: ${gasPriceGwei} gwei (${gasPriceWei.toString()} wei)` }] }; } catch (error) { return createErrorResponse(error, 'getting gas price'); } } );