One API.
One MCP.

// node — issue a USDC-backed virtual card
import { HashDT } from "hashdt";

const client = new HashDT({ apiKey: process.env.HASHDT_KEY });

const card = await client.cards.create({
  customer_id: "cus_8X4Tq",
  type: "virtual",
  currency: "USDC",
  controls: { max_amount_per_day: 2500 }
});

console.log(card.id, card.last4);
// crd_4Hf2  9134

# python — USDC → NGN via M-PESA
import hashdt, os

client = hashdt.Client(api_key=os.environ["HASHDT_KEY"])

payout = client.payouts.create(
    source_currency="USDC",
    destination_currency="NGN",
    rail="mpesa",
    amount=2_400_000,
    beneficiary={
        "name": "Adunni Co.",
        "phone": "+234801234567",
    },
    idempotency_key="po_2026_q1_0048",
)

print(payout.status)  # "settled" in ~6s

// go — lock a quote, settle async
package main

import (
    "context"
    "github.com/hashdt/hashdt-go"
)

func main() {
    c := hashdt.New("sk_live_...")
    q, _ := c.FX.Quote(ctx(), &hashdt.QuoteReq{
        From: "USDC", To: "EUR", Amount: 100_000,
    })
    c.FX.Execute(ctx(), q.ID)
}

// node — verify and handle a signed webhook
app.post("/webhooks/hashdt", (req, res) => {
  const ok = client.webhooks.verify({
    payload: req.rawBody,
    signature: req.headers["x-hashdt-signature"],
    secret: process.env.WH_SECRET,
  });
  if (!ok) return res.status(400).end();

  const evt = JSON.parse(req.rawBody);
  if (evt.type === "payout.settled") {
    // fulfill
  }
  res.status(200).end();
});

// Drop HashDT into any MCP-aware client
{
  "mcpServers": {
    "hashdt": {
      "command": "npx",
      "args": ["-y", "@hashdt/mcp"],
      "env": {
        "HASHDT_KEY": "sk_live_...",
        "HASHDT_SCOPES": "cards.read,payouts.create",
        "HASHDT_HITL": "payouts > 10000"
      }
    }
  }
}

// agent invocation — looks like a tool call
{
  "tool": "hashdt.payouts.create",
  "args": {
    "source_currency": "USDC",
    "destination_currency": "BRL",
    "rail": "pix",
    "amount": 8500,
    "beneficiary_id": "ben_92Lp"
  }
}

// → returns
// { "payout_id": "po_xH4q", "status": "queued",
//   "estimated_settlement": "2026-05-23T14:21Z" }

# scopes are granular, additive, and audited

cards.read         # list / get
cards.create       # issue new cards
cards.freeze       # freeze / unfreeze only

payouts.simulate   # quote / preview only — no money moves
payouts.create     # execute payouts

fx.quote           # pull rates
fx.execute         # execute conversions

# pair with HASHDT_HITL="payouts > 10000" for human approval