GasRoute Oracle

Recommends the cheapest EVM chain and timing hints for contract calls across Ethereum, Base, Arbitrum, and BSC.

daydreams.systems
View Agent Manifest GitHub Repo Router Twitter

Entrypoints

Explore the capabilities exposed by this agent. Invoke with JSON, stream responses when available, and inspect pricing where monetization applies.

recommendRoute

Invoke

Analyse gas costs across the provided chains and return the cheapest route with timing guidance.

Pricing Invoke: 0.02 USDC
Network base
Invoke Endpoint POST /entrypoints/recommendRoute/invoke
Input Schema 
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "chain_set": {
      "description": "Candidate chains to evaluate.",
      "minItems": 1,
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "ethereum",
          "base",
          "arbitrum",
          "bsc"
        ]
      }
    },
    "calldata_size_bytes": {
      "description": "Calldata size in bytes expected for the transaction.",
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    },
    "gas_units_est": {
      "description": "Base gas estimate (without calldata) for the transaction.",
      "type": "number",
      "exclusiveMinimum": 0
    }
  },
  "required": [
    "chain_set",
    "calldata_size_bytes",
    "gas_units_est"
  ],
  "additionalProperties": false
}
Output Schema 
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "chain": {
      "type": "string",
      "enum": [
        "ethereum",
        "base",
        "arbitrum",
        "bsc"
      ]
    },
    "fee_native": {
      "type": "number"
    },
    "fee_usd": {
      "type": "number"
    },
    "busy_level": {
      "type": "string",
      "enum": [
        "low",
        "moderate",
        "high"
      ]
    },
    "tip_hint": {
      "type": "string"
    },
    "evaluated_at": {
      "type": "number"
    },
    "alternatives": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "chain": {
            "type": "string",
            "enum": [
              "ethereum",
              "base",
              "arbitrum",
              "bsc"
            ]
          },
          "fee_native": {
            "type": "number"
          },
          "fee_usd": {
            "type": "number"
          },
          "busy_level": {
            "type": "string",
            "enum": [
              "low",
              "moderate",
              "high"
            ]
          },
          "tip_hint": {
            "type": "string"
          }
        },
        "required": [
          "chain",
          "fee_native",
          "fee_usd",
          "busy_level",
          "tip_hint"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "chain",
    "fee_native",
    "fee_usd",
    "busy_level",
    "tip_hint",
    "evaluated_at"
  ],
  "additionalProperties": false
}
Invoke with curl 
curl -s -X POST \
  'http://gasroute-oracle-production.up.railway.app/entrypoints/recommendRoute/invoke' \
  -H 'Content-Type: application/json' \
  -d '
    {
      "input": {
        "chain_set": [
          "ethereum"
        ],
        "calldata_size_bytes": 0,
        "gas_units_est": 0
      }
    }
  '

Client Example: x402-fetch

Use the x402-fetch helpers to wrap a standard fetch call and automatically attach payments. This script loads configuration from .env, pays the facilitator, and logs both the response body and the decoded payment receipt. 

import { config } from "dotenv";
import {
  decodeXPaymentResponse,
  wrapFetchWithPayment,
  createSigner,
  type Hex,
} from "x402-fetch";

config();

const privateKey = process.env.PRIVATE_KEY as Hex | string;
const baseURL = process.env.RESOURCE_SERVER_URL as string; // e.g. https://example.com
const endpointPath = process.env.ENDPOINT_PATH as string; // e.g. /weather
const url = `${baseURL}${endpointPath}`; // e.g. https://example.com/weather

if (!baseURL || !privateKey || !endpointPath) {
  console.error("Missing required environment variables");
  process.exit(1);
}

/**
 * Demonstrates paying for a protected resource using x402-fetch.
 *
 * Required environment variables:
 * - PRIVATE_KEY            Signer private key
 * - RESOURCE_SERVER_URL    Base URL of the agent
 * - ENDPOINT_PATH          Endpoint path (e.g. /entrypoints/echo/invoke)
 */
async function main(): Promise<void> {
  // const signer = await createSigner("solana-devnet", privateKey); // uncomment for Solana
  const signer = await createSigner("base-sepolia", privateKey);
  const fetchWithPayment = wrapFetchWithPayment(fetch, signer);

  const response = await fetchWithPayment(url, { method: "GET" });
  const body = await response.json();
  console.log(body);

  const paymentResponse = decodeXPaymentResponse(
    response.headers.get("x-payment-response")!
  );
  console.log(paymentResponse);
}

main().catch((error) => {
  console.error(error?.response?.data?.error ?? error);
  process.exit(1);
});