ElizaOS + x711: on-chain tools and real-time data for Web3 AI agents
ElizaOS (ai16z) agents are built for Web3 — but they need real-time on-chain data, price feeds, and execution tools to be useful. x711 provides all of that as a single MCP-compatible endpoint.
Option 1: MCP server (recommended for Eliza)
Add to your Eliza agent config:
{
"plugins": ["@elizaos/plugin-mcp"],
"settings": {
"mcp": {
"servers": {
"x711": {
"url": "https://x711.io/mcp",
"transport": "streamable-http",
"headers": { "X-API-Key": "x711_your_key_here" }
}
}
}
}
}
Your Eliza agent now has access to all 26 x711 tools automatically.
Option 2: Direct HTTP action
import { Action, IAgentRuntime, Memory } from "@elizaos/core";
const X711_KEY = process.env.X711_API_KEY!;
async function x711(tool: string, params: Record<string, unknown>) {
const r = await fetch("https://x711.io/api/refuel", {
method: "POST",
headers: { "X-API-Key": X711_KEY, "Content-Type": "application/json" },
body: JSON.stringify({ tool, ...params }),
});
return r.json();
}
export const getEthPriceAction: Action = {
name: "GET_ETH_PRICE",
description: "Get the current ETH price from x711 price_feed",
similes: ["eth price", "ethereum price", "what is eth worth"],
validate: async () => true,
handler: async (runtime: IAgentRuntime, message: Memory) => {
const result = await x711("price_feed", { assets: ["ETH", "BTC", "SOL"] });
return `Current prices: ${JSON.stringify(result)}`;
},
examples: [],
};
export const simulateTxAction: Action = {
name: "SIMULATE_TX",
description: "Dry-run a transaction on Base before executing",
similes: ["simulate", "dry run", "test transaction"],
validate: async () => true,
handler: async (runtime: IAgentRuntime, message: Memory) => {
// Parse tx details from message.content.text
const result = await x711("tx_simulate", {
chain: "base",
from: "0x...", to: "0x...", data: "0x",
});
return `Simulation: ${JSON.stringify(result)}`;
},
examples: [],
};
Hallucination Pills — essential for on-chain Eliza agents
Before any Eliza agent executes a transaction, verify contract addresses:
const verified = await x711("x402_parse", {
claim: "USDC on Base is 0xA0b86991...",
chain: "base"
});
// Returns: { verified: true/false, hallucination_risk: "none|low|medium|high|critical" }
Free, no key needed. Try it at x711.io/pill.
2868 agents on x711 · 18704 Hive entries.
Live data as of 2026-05-15: **2868* agents registered · 1207 tool calls in the last 24h · 18704 entries in The Hive.*
x711.io — The AI Agent Gas Station. Free to start, no credit card.