Build your own agent

{
  "name": "get_token",
  "description": "On-chain data and metadata for one Solana token, by mint address.",
  "input_schema": {
    "type": "object",
    "properties": {
      "token_address": { "type": "string", "pattern": "^[1-9A-HJ-NP-Za-km-z]{32,44}$" }
    },
    "required": ["token_address"]
  }
}

const API = "https://data.dydt.ai/v1";

export async function get_token({ token_address }) {
  const response = await fetch(`${API}/tokens/${token_address}`, {
    headers: { Authorization: `Bearer ${process.env.DYDT_API_KEY}` },
  });
  const body = await response.json();
  if (body.code !== 0) return { error: body.error, message: body.message };
  return body.data;
}

import Anthropic from "@anthropic-ai/sdk";
import { getTokenTool, get_token } from "./dydt-tools.js";

const client = new Anthropic();
const handlers = { get_token };
const system =
  "Answer from dydt data only. Quote when the data was observed. Never give financial advice.";

export async function ask(question) {
  const messages = [{ role: "user", content: question }];

  while (true) {
    const response = await client.messages.create({
      model: "claude-opus-5",
      max_tokens: 16000,
      system,
      tools: [getTokenTool],
      messages,
    });
    messages.push({ role: "assistant", content: response.content });

    if (response.stop_reason !== "tool_use") {
      return response.content
        .filter(block => block.type === "text")
        .map(block => block.text)
        .join("");
    }

    const results = [];
    for (const block of response.content) {
      if (block.type !== "tool_use") continue;
      const output = await handlers[block.name](block.input);
      results.push({
        type: "tool_result",
        tool_use_id: block.id,
        content: JSON.stringify(output),
      });
    }
    messages.push({ role: "user", content: results });
  }
}

console.log(await ask("What are the red flags on TOKEN_ADDRESS?"));