Vito API ドキュメント

Authorization: Bearer vito_live_xxxxxxxxxxxxxxxx

POST https://api.vetox.io/public/vito/v1/deduct
Authorization: Bearer vito_live_xxxxxxxxxxxxxxxx
Content-Type: application/json
Idempotency-Key: req_9a1f2b   # optional, dedupes retries for 24h

{
  "discordId": "123456789012345678",
  "amount": 500,
  "guildId": "1470389021162209280",
  "reason": "Unlock premium theme",
  "merchantRef": "ref_1042",
  "product": {
    "type": "feature",
    "name": "Premium theme",
    "description": "Unlocks the premium theme pack",
    "imageUrl": "https://cdn.example.com/theme.png"
  },
  "metadata": { "ref": "1042" }
}

{
  "success": true,
  "data": {
    "confirmationId": "f3c9...e1",
    "confirmUrl": "https://vetox.io/confirm/vito/f3c9...e1",
    "amount": 500,
    "expiresAt": 1735689600000,
    "status": "pending"
  },
  "requestId": "req_abc123",
  "timestamp": 1735689300000
}

POST https://api.vetox.io/public/vito/v1/add
Authorization: Bearer vito_live_xxxxxxxxxxxxxxxx
Content-Type: application/json
Idempotency-Key: credit_7f3a   # optional, dedupes retries for 24h

{
  "discordId": "123456789012345678",
  "amount": 250,
  "reason": "Event reward",
  "merchantRef": "reward_1042",
  "metadata": { "ref": "1042" }
}

{
  "success": true,
  "data": {
    "transactionId": "txn_91b2",
    "toDiscordId": "123456789012345678",
    "amount": 250,
    "ownerBalance": 48250,
    "recipientBalance": 1250,
    "status": "completed"
  },
  "requestId": "req_def456",
  "timestamp": 1735689300000
}

import crypto from 'crypto';
import express from 'express';

const app = express();
// IMPORTANT: verify against the RAW body, before JSON parsing.
app.post('/webhooks/vito', express.raw({ type: '*/*' }), (req, res) => {
  const sig = req.header('X-Vito-Signature') || '';   // "ts=<unix>;h1=<hmac>[;h1=<hmac>]"
  const pairs = sig.split(';').map(p => p.split('='));
  const ts = pairs.find(([k]) => k === 'ts')?.[1];
  const sigs = pairs.filter(([k]) => k === 'h1').map(([, v]) => v);
  const rawBody = req.body.toString('utf8');

  const expected = crypto
    .createHmac('sha256', process.env.VITO_SIGNING_SECRET)     // whsec_...
    .update(`${ts}:${rawBody}`)
    .digest('hex');
  const expectedBuf = Buffer.from(expected, 'hex');

  // During a 24h secret rotation the header carries TWO h1= values — accept ANY.
  // Length-guard FIRST: crypto.timingSafeEqual throws on a length mismatch.
  const ok = sigs.some(h => {
    const got = Buffer.from(h, 'hex');
    return (
      got.length === expectedBuf.length &&
      crypto.timingSafeEqual(got, expectedBuf)
    );
  });
  // Reject anything older than ~5 minutes to stop replays.
  const fresh = ts && Math.abs(Date.now() / 1000 - Number(ts)) < 300;
  if (!ok || !fresh) return res.status(401).end();

  const event = JSON.parse(rawBody);
  if (event.eventType === 'confirmation.completed') {
    grantPremiumTheme(event.data.merchantRef, event.data.fromDiscordId);
  }
  res.status(200).end();   // ack fast; run your action async if slow
});

POST https://your-app.com/webhooks/vito
X-Vito-Signature: ts=1735689600;h1=4f8b2c...e9
X-Vito-Event-Id: evt_3a2b1c
X-Vito-Event-Type: confirmation.completed
Content-Type: application/json

{
  "eventId": "evt_3a2b1c",
  "eventType": "confirmation.completed",
  "timestamp": 1735689600000,
  "data": {
    "confirmationId": "f3c9...e1",
    "type": "deduct",
    "fromDiscordId": "123456789012345678",
    "toDiscordId": null,
    "amount": 500,
    "reason": "Unlock premium theme",
    "merchantRef": "ref_1042",
    "product": { "type": "feature", "name": "Premium theme" },
    "status": "completed",
    "transactionId": "txn_77a2",
    "metadata": { "ref": "1042" },
    "failureReason": null
  }
}

{
  "success": false,
  "error": { "type": "Bad Request", "message": "guildId must be a valid Discord server ID", "code": "VITO_VALIDATION_ERROR" },
  "requestId": "req_abc123",
  "timestamp": 1735689300000
}