npm install x402-agent-tools @x402/fetch @x402/evm viem

import { createClient } from "x402-agent-tools";

const client = createClient("0xYourPrivateKey");

// Crypto: whale positions on Hyperliquid
const whales = await client.call("hyperliquid_whales", { coin: "BTC" });

// B2B: enrich a company from domain
const company = await client.call("company_enrichment", { domain: "stripe.com" });

// Security: trust score any domain
const trust = await client.call("trust_score", { target: "example.com" });

// DeFi: best bridge route across 60+ chains
const route = await client.call("bridge_routes", {
  fromChain: "1", toChain: "8453", token: "USDC", amount: "1000000"
});

import { createClient } from "x402-agent-tools";
import { getX402Tools } from "x402-agent-tools/ai-sdk";
import { generateText } from "ai";
import { anthropic } from "@ai-sdk/anthropic";

const client = createClient("0xYourPrivateKey");

const { text } = await generateText({
  model: anthropic("claude-sonnet-4-20250514"),
  tools: getX402Tools(client),
  prompt: "What are the current funding rates on Hyperliquid for BTC and ETH? Also check if there are any liquidation levels near current prices on Aave.",
});

// Only Hyperliquid + DeFi tools (ideal for trading agents)
const tradingTools = getX402Tools(client, {
  categories: ["hyperliquid", "defi", "crypto"]
});

// Only specific tools you need
const researchTools = getX402Tools(client, {
  tools: ["web_scraper", "web_search", "fact_checker", "research_report"]
});

import { createClient } from "x402-agent-tools";
import { getX402LangChainTools } from "x402-agent-tools/langchain";
import { ChatAnthropic } from "@langchain/anthropic";
import { AgentExecutor, createToolCallingAgent } from "langchain/agents";

const client = createClient("0xYourPrivateKey");
const tools = getX402LangChainTools(client);

const llm = new ChatAnthropic({ model: "claude-sonnet-4-20250514" });
const agent = createToolCallingAgent({ llm, tools, prompt: yourPrompt });
const executor = new AgentExecutor({ agent, tools });

await executor.invoke({
  input: "Find the top whale positions on Hyperliquid BTC, check token safety for the top traded token, then summarize the findings."
});

import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount("0xYourPrivateKey");
const paidFetch = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

// trust_score is POST /api/score. GET tools (e.g. dex_quotes -> /api/quote) take query params.
const response = await paidFetch("https://trust-score.api.klymax402.com/api/score", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ target: "example.com" }),
});
const result = await response.json();

Your Agent                    x402-agent-tools                  API Server
    |                              |                                |
    |-- call("trust_score", {})  ->|                                |
    |                              |-- POST /api/score ------------>|
    |                              ||
    |                              |= 18
- A wallet with USDC on Base L2 (even $1 gets you 100-1000+ calls)
- Private key for signing payments (use a dedicated agent wallet, **not** your main wallet)

## AI Discovery

klymax402 publishes a machine-readable catalog for AI systems and LLM crawlers:

- **llms.txt**: [klymax402.com/llms.txt](https://klymax402.com/llms.txt) — full API catalog in llms.txt format (99 APIs, pricing, MCP install snippets, x402 payment reference)
- **MCP endpoint**: `https://klymax402.com/mcp` — self-hosted MCP gateway, all 99 APIs, Streamable HTTP
- **Live stats**: [klymax402.com/stats](https://klymax402.com/stats/) — 99.9% uptime, P50 57ms, P95 104ms, 766 txs on-chain

Compatible with Claude, Claude Code, Cursor, Codex, and ElizaOS (plugin: `eliza-plugin-klymax402`).

## Links

- [klymax402.com](https://klymax402.com) — marketplace homepage
- [llms.txt](https://klymax402.com/llms.txt) — AI-readable catalog
- [Live stats](https://klymax402.com/stats/) — real-time dashboard
- [GitHub](https://github.com/Br0ski777/x402-agent-tools)
- [x402 Protocol](https://www.x402.org/)
- [x402scan Analytics](https://www.x402scan.com/)

## License

MIT