{ "openapi": "3.1.1", "info": { "title": "RavingDesk Ethereum EIP-1559 Gas Fee Estimator API", "version": "1.0.0", "summary": "Estimate an Ethereum transaction fee from gas used, base fee, max fee and priority tip (EIP-1559).", "description": "Every endpoint performs the same calculation as the human page and returns inputs, result, units, assumptions, sources, warnings and computedAt. MCP endpoint: /mcp." }, "servers": [ { "url": "https://ravingdeskethgas.usefulweb.app" } ], "paths": { "/api/v1/calculate": { "post": { "operationId": "calculate", "summary": "Estimate an Ethereum transaction fee from gas used, base fee, max fee and priority tip (EIP-1559).", "description": "Applies the EIP-1559 fee rules to the numbers you enter: effective gas price (base fee plus a priority tip capped by the max fee), the estimated execution fee for the gas used and the maximum fee you authorise (gas limit × max fee), optionally converted at your own ETH price. It flags a max fee below the base fee. No network data is fetched; it is the gas estimator of the RavingDesk workspace.\n\nMethodology:\n- EIP-1559: the effective gas price is min(max fee, base fee + max priority fee). A transaction whose max fee is below the current base fee cannot be included until the base fee falls.\n- Estimated execution fee = gas used × effective gas price; the base-fee part (gas used × base fee) is burned and the rest is the validator tip.\n- Maximum fee = gas limit × max fee: the most the transaction can cost; unused gas is not charged.\n- 1 ETH = 10⁹ gwei. Quote amounts use the ETH price you enter. Layer-2 data fees, blob fees and the transferred value are not included.\n\nEstimate from your own numbers; base fees change every block and inclusion is not guaranteed. Not financial advice; no transaction is created or sent.", "tags": [ "apps" ], "x-mcp-tool": "ravingdesk_eth_gas", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/RavingdeskEthGasInput" }, "examples": { "example1": { "summary": "Plain ETH transfer: 21,000 gas, base 30, max 50, tip 2 gwei, ETH at 3,000", "value": { "gasUsed": 21000, "gasLimit": 30000, "baseFeeGwei": 30, "maxFeeGwei": 50, "maxPriorityFeeGwei": 2, "ethQuoteRate": 3000 } }, "example2": { "summary": "Token swap: 150,000 gas, limit 200,000, base 12 gwei", "value": { "gasUsed": 150000, "gasLimit": 200000, "baseFeeGwei": 12, "maxFeeGwei": 20, "maxPriorityFeeGwei": 1.5 } }, "example3": { "summary": "Max fee below the base fee: not includable", "value": { "gasUsed": 21000, "gasLimit": 21000, "baseFeeGwei": 40, "maxFeeGwei": 35, "maxPriorityFeeGwei": 2, "ethQuoteRate": 3000 } } } } } }, "responses": { "200": { "description": "Calculation result envelope.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/RavingdeskEthGasResult" } } } }, "400": { "description": "Malformed JSON body.", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } }, "422": { "description": "Invalid input (see errors[]).", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } }, "429": { "description": "Rate limit exceeded (see Retry-After).", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } } } } }, "/api/v1/tool": { "get": { "operationId": "getToolDefinition", "summary": "Inputs, output schema and examples for this tool", "responses": { "200": { "description": "Tool definition.", "content": { "application/json": { "schema": { "type": "object" } } } } } } } }, "components": { "schemas": { "Problem": { "type": "object", "description": "RFC 9457 problem details. 422 responses include per-field `errors`.", "required": [ "type", "title", "status", "detail" ], "properties": { "type": { "type": "string" }, "title": { "type": "string" }, "status": { "type": "integer" }, "detail": { "type": "string" }, "code": { "type": "string" }, "errors": { "type": "array", "items": { "type": "object", "required": [ "field", "message" ], "properties": { "field": { "type": "string" }, "message": { "type": "string" } } } } } }, "RavingdeskEthGasInput": { "type": "object", "additionalProperties": false, "properties": { "gasUsed": { "title": "Gas used", "description": "21,000 for a plain ETH transfer; contract calls use more.", "type": "integer", "minimum": 1, "maximum": 1000000000, "default": 21000 }, "gasLimit": { "title": "Gas limit", "type": "integer", "minimum": 1, "maximum": 1000000000, "default": 30000 }, "baseFeeGwei": { "title": "Base fee", "type": "number", "minimum": 0, "maximum": 1000000000, "default": 30, "x-unit": "gwei" }, "maxFeeGwei": { "title": "Max fee per gas", "type": "number", "minimum": 0, "maximum": 1000000000, "default": 50, "x-unit": "gwei" }, "maxPriorityFeeGwei": { "title": "Max priority fee (tip)", "type": "number", "minimum": 0, "maximum": 1000000000, "default": 2, "x-unit": "gwei" }, "ethQuoteRate": { "title": "Your ETH price (optional)", "description": "Quote-currency units per 1 ETH, e.g. 3000. Leave empty for ETH only.", "type": "number", "minimum": 1e-8, "maximum": 1000000000000 } }, "required": [ "gasUsed", "gasLimit", "baseFeeGwei", "maxFeeGwei", "maxPriorityFeeGwei" ] }, "RavingdeskEthGasResult": { "type": "object", "additionalProperties": false, "required": [ "schemaVersion", "tool", "computedAt", "inputs", "summary", "result", "units", "assumptions", "sources", "warnings", "presentation", "links" ], "properties": { "schemaVersion": { "type": "string", "const": "1.0" }, "tool": { "type": "object", "additionalProperties": false, "required": [ "id", "name", "version" ], "properties": { "id": { "type": "string" }, "name": { "type": "string" }, "version": { "type": "string" } } }, "computedAt": { "type": "string", "format": "date-time" }, "inputs": { "type": "object", "description": "Normalised inputs actually used, including applied defaults." }, "summary": { "type": "string" }, "result": { "type": "object", "additionalProperties": false, "required": [ "marketable", "effectiveGasPriceGwei", "estimatedFeeEth", "maximumFeeEth", "estimatedFeeQuote", "maximumFeeQuote", "burnedEth", "tipEth" ], "properties": { "marketable": { "type": "boolean" }, "effectiveGasPriceGwei": { "type": [ "number", "null" ] }, "estimatedFeeEth": { "type": [ "number", "null" ] }, "maximumFeeEth": { "type": "number" }, "estimatedFeeQuote": { "type": [ "number", "null" ] }, "maximumFeeQuote": { "type": [ "number", "null" ] }, "burnedEth": { "type": [ "number", "null" ] }, "tipEth": { "type": [ "number", "null" ] } } }, "units": { "type": "object", "additionalProperties": { "type": "string" } }, "assumptions": { "type": "array", "items": { "type": "string" } }, "sources": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "title" ], "properties": { "title": { "type": "string" }, "url": { "type": "string" }, "publisher": { "type": "string" }, "retrievedAt": { "type": "string" }, "note": { "type": "string" } } } }, "warnings": { "type": "array", "items": { "type": "string" } }, "presentation": { "type": "array", "items": { "type": "object" }, "description": "Display blocks used by the human page (same data)." }, "links": { "type": "object", "additionalProperties": false, "required": [ "human", "api", "openapi", "methodology" ], "properties": { "human": { "type": "string", "format": "uri" }, "api": { "type": "string", "format": "uri" }, "openapi": { "type": "string", "format": "uri" }, "methodology": { "type": "string", "format": "uri" } } } } } } } }