DALP webhook event token.transfer.pending reference

A token transfer was observed before block inclusion and may later finalize or retract.

Delivery contract

Field	Value
Event type	`token.transfer.pending`
Version	`1`
Lifecycle state	`pending`
Counter-signed receipt required	`false`
SDK type	`Webhook.TokenTransferPendingV1`

Related references:

idxr_token
mempool_transfer

Payload schema

{
  "type": "object",
  "properties": {
    "tokenAddress": {
      "type": "string",
      "pattern": "^0x[a-fA-F0-9]{40}$"
    },
    "chainId": {
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 9007199254740991
    },
    "from": {
      "type": "string",
      "pattern": "^0x[a-fA-F0-9]{40}$"
    },
    "to": {
      "type": "string",
      "pattern": "^0x[a-fA-F0-9]{40}$"
    },
    "amount": {
      "type": "string"
    },
    "transactionHash": {
      "type": "string",
      "pattern": "^0x[a-fA-F0-9]{64}$"
    }
  },
  "required": ["tokenAddress", "chainId", "from", "to", "amount", "transactionHash"],
  "additionalProperties": false
}

TypeScript SDK example

import { verifyWebhook, type Webhook } from "@settlemint/dalp-sdk";

const result = verifyWebhook({
  rawBody,
  headers,
  secret: process.env.DALP_WEBHOOK_SECRET!,
});

if (!result.ok) {
  throw new Error(`Webhook verification failed: ${result.code}`);
}

if (result.event.type === "token.transfer.pending") {
  const event: Webhook.Event<"token.transfer.pending"> = result.event;
  console.log(event.payload);
}

curl example

curl -X POST https://consumer.example.com/dalp/webhooks \
  -H "content-type: application/json" \
  -H "webhook-id: evt_docs_token_transfer_pending_001" \
  -H "webhook-timestamp: 1778112000" \
  -H "webhook-signature: v1,docs-example-signature" \
  --data '{"evt_id":"evt_docs_token_transfer_pending_001","type":"token.transfer.pending","version":1,"lifecycle_state":"pending","request":{"idempotency_key":"idem_01JZP7R5W8M9N0P1Q2R3S4T5"},"related":{"idxr_token":"idxr_token_example","mempool_transfer":"mempool_transfer_example"},"payload":{"tokenAddress":"0x8888888888888888888888888888888888888888","chainId":537001,"from":"0x9999999999999999999999999999999999999999","to":"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","amount":"1000000000000000000","transactionHash":"0xdddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"}}'

Version history

v1: Initial registry entry for token.transfer.pending.

Deprecation

This event type is not deprecated.

Manifest

The machine-readable AsyncAPI entry is published in the DALP events manifest.

token.transfer.pending