Use Webhooks
Webhooks are used to notify your application of events that have occurred in the Fordefi platform.
Configure a webhook to have a notification sent each time one of the following triggering events occurs in Fordefi:
- An incoming transaction received by the system
- A status change in an outgoing transaction (such as MINED, COMPLETED, and others)
You can also monitor transactions using webhooks.
Webhooks versions
Currently, Fordefi provides two versions of webhooks:
- The legacy, version 1 webhook format, which delivers a minimal set of transaction data. This format is deprecated and will be phased out soon.
- The newer, more robust version 2 format, which delivers the full set of transaction data as delivered by the Get Transaction endpoint.
Configure webhooks
In the Fordefi web console, click Settings, then click the Webhooks tab.
This screen displays all the webhooks you have created. The following details are shown:
Webhook name
Callback URL
Trigger (currently, transactions only). Indicates webhooks version: v1 or v2.
Created date and author
Date of latest successful call
Webhook status. Can be one of the following:
Active: webhook notifications are being sent successfully.
Active with error: the last webhook was not received but the webhook will continue sending notifications.
Suspended: Fordefi tried sending notifications for five days and failed; further webhook notification was suspended. Right-click on a suspended webhook to display more options for testing, deleting, or reviving the webhook.
Add a webhook
In the Fordefi web console, click Settings, then click the Webhooks tab.
Click Configure webhook.
In the dialog that appears, enter:
- Webhook subscription name: A descriptive name for the webhook.
- Callback URL: The URL to which Fordefi should deliver the notification. For example,
https://your-domain.com/webhook/path. Only HTTPS addresses are permissible. - Trigger: Currently, only Transactions is supported. Choose v1 (deprecated) or v2 (recommended).
Click Configure.
Webhook event structure
Webhook messages sent by the Fordefi platform to your service use JSON structures. See the Fordefi API reference for more information.
Here are examples of webhook events:
This example shows the structure of a webhook v2 for a mined contract call transaction.
{
"timestamp": "2025-07-15T11:17:24.795Z",
"event": {
"webhook_id": "3cfb241c-56bf-411f-ba4a-9a0c8d8bf5f4",
"created_at": "2025-07-15T11:12:32Z",
"event_id": "15e0062c-be33-479c-98b9-5a08a6a42f1a",
"attempt": 8,
"sent_at": "2025-07-15T11:17:24.381233Z",
"event": {
"id": "00daa7e5-f21e-46bd-a5ed-0616af65f397",
"created_at": "2025-07-15T11:12:24.422000Z",
"modified_at": "2025-07-15T11:12:32.325000Z",
"managed_transaction_data": {
"created_by": {
"id": "fb30b30f-eabe-4b7f-a0de-60e64eb1ffcc",
"user_type": "person",
"name": "Dan Jaheny",
"email": "danj@fordefi.com",
"state": "active",
"role": "admin"
},
"device_signing_request": {
"created_by": {
"id": "fb30b30f-eabe-4b7f-a0de-60e64eb1ffcc",
"user_type": "person",
"name": "Dan Jaheny",
"email": "danj@fordefi.com",
"state": "active",
"role": "admin"
},
"signers": [
{
"user": {
"id": "fb30b30f-eabe-4b7f-a0de-60e64eb1ffcc",
"user_type": "person",
"name": "Dan Jaheny",
"email": "danj@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.491000Z",
"has_signed": false
}
]
},
"approval_request": {
"state": "auto_approved",
"quorum_size": 1,
"approvers": [
{
"user": {
"id": "239536f3-6858-40ee-84ee-13ff8a4956d5",
"user_type": "person",
"name": "Daniel Bellmas",
"email": "danielb@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "b8d89e21-e44a-4f13-8338-739ae50a22ad",
"user_type": "person",
"name": "Daniel Katzan",
"email": "danielkatzan@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "fb30b30f-eabe-4b7f-a0de-60e64eb1ffcc",
"user_type": "person",
"name": "Dan Jaheny",
"email": "danj@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.472000Z",
"decision": "dummy",
"state": "approved"
},
{
"user": {
"id": "894c4207-2990-4c6b-9866-08c69026c732",
"user_type": "person",
"name": "hvbris@protonmail.com",
"email": "hvbris@protonmail.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "353332eb-5bcc-4fd4-a561-966343a44276",
"user_type": "api_user",
"name": "DanBot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "b81120d9-a62b-4191-b0fd-20dc557c81cf",
"user_type": "api_user",
"name": "SamBot2",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "06097eff-9fcf-419d-a91c-0d807ea985b0",
"user_type": "api_user",
"name": "Dan Perso",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "1eda3028-96fa-4f65-b951-a7796cb51ff2",
"user_type": "person",
"name": "trad3alert@gmail.com",
"email": "trad3alert@gmail.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "42cafa10-ad04-46f2-867f-6af3d65f2a9b",
"user_type": "api_user",
"name": "KatzieBot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "62ae25ec-9224-4ab8-8a3f-50bf9cf378fa",
"user_type": "api_user",
"name": "HealthCheck Bot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "3d1379e0-53d7-4639-8f21-7376760c77fb",
"user_type": "api_user",
"name": "bot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
}
],
"required_groups": 1,
"approval_groups": [
{
"quorum_size": 1,
"approvers": [
{
"user": {
"id": "239536f3-6858-40ee-84ee-13ff8a4956d5",
"user_type": "person",
"name": "Daniel Bellmas",
"email": "danielb@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "b8d89e21-e44a-4f13-8338-739ae50a22ad",
"user_type": "person",
"name": "Daniel Katzan",
"email": "danielkatzan@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "fb30b30f-eabe-4b7f-a0de-60e64eb1ffcc",
"user_type": "person",
"name": "Dan Jaheny",
"email": "danj@fordefi.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.472000Z",
"decision": "dummy",
"state": "approved"
},
{
"user": {
"id": "894c4207-2990-4c6b-9866-08c69026c732",
"user_type": "person",
"name": "hvbris@protonmail.com",
"email": "hvbris@protonmail.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "353332eb-5bcc-4fd4-a561-966343a44276",
"user_type": "api_user",
"name": "DanBot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "b81120d9-a62b-4191-b0fd-20dc557c81cf",
"user_type": "api_user",
"name": "SamBot2",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "06097eff-9fcf-419d-a91c-0d807ea985b0",
"user_type": "api_user",
"name": "Dan Perso",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "1eda3028-96fa-4f65-b951-a7796cb51ff2",
"user_type": "person",
"name": "trad3alert@gmail.com",
"email": "trad3alert@gmail.com",
"state": "active",
"role": "admin"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "42cafa10-ad04-46f2-867f-6af3d65f2a9b",
"user_type": "api_user",
"name": "KatzieBot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "62ae25ec-9224-4ab8-8a3f-50bf9cf378fa",
"user_type": "api_user",
"name": "HealthCheck Bot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
},
{
"user": {
"id": "3d1379e0-53d7-4639-8f21-7376760c77fb",
"user_type": "api_user",
"name": "bot",
"state": "active",
"role": "trader"
},
"modified_at": "2025-07-15T11:12:24.468000Z",
"decision": "dummy",
"state": "not_participated"
}
]
}
]
},
"policy_match": {
"is_default": true,
"rule_id": "00000000-0000-0000-0000-000000000000",
"rule_name": "",
"action_type": "require_approval"
},
"signer_type": "initiator",
"risks": [],
"vault": {
"id": "81e82853-3c4f-4cd4-b494-78fb4abf168a",
"vault_group_id": "fed9275d-4710-4aeb-b599-82fb9ccd4e33",
"name": "EVM Vault",
"address": "0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73",
"state": "active",
"type": "evm"
},
"has_current_user_vault_permissions": true,
"push_mode": "auto",
"last_pushed_at": "2025-07-15T11:12:32.310174Z",
"sign_mode": "auto"
},
"signatures": [
{
"data": "LEZv9Ob7yarCOdSHaF1zPW2mUfN8WWPouk97HgnbjXpbRnH4ZkYo3A/LweLLZotifmVuVBOQ7g0NN1053R6ESwE=",
"signed_by": {
"id": "fb30b30f-eabe-4b7f-a0de-60e64eb1ffcc",
"user_type": "person",
"name": "Dan Jaheny",
"email": "danj@fordefi.com",
"state": "active",
"role": "admin"
}
}
],
"note": "",
"spam_state": "unset",
"direction": "outgoing",
"signed_externally": false,
"state": "pushed_to_blockchain",
"state_changes": [
{
"changed_at": "2025-07-15T11:12:24.422000Z",
"asset_prices": [],
"prices": {
"token_prices": []
},
"new_state": "waiting_for_approval"
},
{
"changed_at": "2025-07-15T11:12:24.490000Z",
"asset_prices": [],
"prices": {
"token_prices": []
},
"previous_state": "waiting_for_approval",
"new_state": "approved"
},
{
"changed_at": "2025-07-15T11:12:32.279000Z",
"asset_prices": [],
"prices": {
"token_prices": []
},
"previous_state": "approved",
"new_state": "signed"
},
{
"changed_at": "2025-07-15T11:12:32.316000Z",
"asset_prices": [],
"prices": {
"token_prices": []
},
"previous_state": "signed",
"new_state": "pushed_to_blockchain"
}
],
"aml_check": {
"results": {
"scan_status": "skipped"
}
},
"aml_results": {
"scan_status": "skipped"
},
"is_cancelation": false,
"is_acceleration": false,
"type": "evm_transaction",
"evm_transaction_type_details": {
"type": "contract_call"
},
"chain": {
"chain_type": "evm",
"named_chain_id": "ethereum_mainnet",
"chain_id": 1,
"unique_id": "evm_ethereum_mainnet",
"name": "Ethereum",
"native_currency_symbol": "ETH",
"native_currency_name": "Ether",
"blockchain_explorer": {
"transaction_url": "https://etherscan.io/tx/",
"address_url": "https://etherscan.io/address/",
"root_url": "https://etherscan.io/",
"transaction_format_url": "https://etherscan.io/tx/%s",
"address_format_url": "https://etherscan.io/address/%s",
"asset_format_url": "https://etherscan.io/address/%s"
},
"logo_url": "https://logos.fordefi.com/chains/evm/default/1.svg",
"is_testnet": false,
"is_enabled": true,
"gas_type": "dynamic",
"supports_secure_node": true,
"source": "default"
},
"from": {
"vault": {
"id": "81e82853-3c4f-4cd4-b494-78fb4abf168a",
"vault_group_id": "fed9275d-4710-4aeb-b599-82fb9ccd4e33",
"name": "EVM Vault",
"address": "0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73",
"state": "active",
"type": "evm"
},
"explorer_url": "https://etherscan.io/address/0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73",
"contact": {
"id": "13cd529a-7461-4e22-8386-0a7380731ff7",
"name": "Self",
"address_ref": {
"chain_type": "evm",
"address": "0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73",
"chains": [
{
"chain_type": "evm",
"named_chain_id": "ethereum_mainnet",
"chain_id": 1,
"unique_id": "evm_ethereum_mainnet"
}
]
}
},
"type": "evm",
"address": "0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73"
},
"to": {
"explorer_url": "https://etherscan.io/address/0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af",
"type": "evm",
"address": "0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af",
"contract": {
"name": "UniversalRouter",
"dapp": {
"id": "a44c28f3-d09d-5d4c-9d3e-4aba83d34c2f",
"name": "Uniswap V4",
"url": "https://app.uniswap.org/",
"logo_url": "https://logos.fordefi.com/dapps/a44c28f3-d09d-5d4c-9d3e-4aba83d34c2f.png"
},
"is_verified": true
}
},
"value": "1000000000000000",
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"hex_data": "0x3593564c000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000068763e960000000000000000000000000000000000000000000000000000000000000003100604000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000044000000000000000000000000000000000000000000000000000000000000004c000000000000000000000000000000000000000000000000000000000000003c0000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000003070b0e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000022000000000000000000000000000000000000000000000000000000000000002a000000000000000000000000000000000000000000000000000000000000001a000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000038d7ea4c68000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4800000000000000000000000000000000000000000000000000000000000001f4000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000060000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4800000000000000000000000027213e28d7fda5c57fe9e5dd923818dbccf71c4700000000000000000000000000000000000000000000000000000000000000190000000000000000000000000000000000000000000000000000000000000060000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb480000000000000000000000008bfcf9e2764bc84de4bbd0a0f5aaf19f47027a7300000000000000000000000000000000000000000000000000000000002ae61a0c",
"parsed_data": {
"method": "execute",
"method_arguments": [
{
"name": "commands",
"type": "bytes",
"value": "[16 6 4]"
},
{
"name": "inputs",
"type": "bytes[]",
"value": "[[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 64 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 128 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 7 11 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 96 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 160 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 160 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 128 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 141 126 164 198 128 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 32 0 0 0 0 0 0 0 0 0 0 0 0 160 184 105 145 198 33 139 54 193 209 157 74 46 158 176 206 54 6 235 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 244 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 160 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 96 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 96 0 0 0 0 0 0 0 0 0 0 0 0 160 184 105 145 198 33 139 54 193 209 157 74 46 158 176 206 54 6 235 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] [0 0 0 0 0 0 0 0 0 0 0 0 160 184 105 145 198 33 139 54 193 209 157 74 46 158 176 206 54 6 235 72 0 0 0 0 0 0 0 0 0 0 0 0 39 33 62 40 215 253 165 197 127 233 229 221 146 56 24 219 204 247 28 71 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25] [0 0 0 0 0 0 0 0 0 0 0 0 160 184 105 145 198 33 139 54 193 209 157 74 46 158 176 206 54 6 235 72 0 0 0 0 0 0 0 0 0 0 0 0 139 252 249 226 118 75 200 77 228 187 208 160 245 170 241 159 71 2 122 115 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 42 230 26]]"
},
{
"name": "deadline",
"type": "uint256",
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"type": "evm"
},
"explorer_url": "https://etherscan.io/address/0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73",
"contact": {
"id": "13cd529a-7461-4e22-8386-0a7380731ff7",
"name": "Self",
"address_ref": {
"chain_type": "evm",
"address": "0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73",
"chains": [
{
"chain_type": "evm",
"named_chain_id": "ethereum_mainnet",
"chain_id": 1,
"unique_id": "evm_ethereum_mainnet"
}
]
}
},
"type": "evm",
"address": "0x8BFCF9e2764BC84DE4BBd0a0f5AAF19F47027A73"
},
"price": {
"price": "100",
"price_float": "99.9899",
"fiat_currency": {
"currency_symbol": "usd",
"decimals": 2
}
}
}
],
"allowances": [],
"bridge": [],
"contract_deployments": []
}
},
"simulation_status_result": {
"simulation_status": "success",
"details": "not reverted"
},
"gas_submitted": {
"max_priority_fee_per_gas": "61630322",
"max_fee_per_gas": "1414388591",
"priority": "medium",
"limit": "232837",
"type": "dynamic"
},
"use_secure_node": false,
"explorer_url": "https://etherscan.io/tx/0x0608fadd2cc9584886cafcc9dafd99cd22721cfbfa15b869f383a63eea42b481",
"raw_transaction": "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"
},
"event_type": "enriched_transaction_state_update"
}
}Validate a webhook
Each webhook notification includes a signature on the payload. This signature is used to validate the webhook message by verifying that it actually came from Fordefi's backend and was not tampered with by any MITM attacks or malicious actors.
The following are code examples in Python and TypeScript that show how to validate the webhook signature:
import base64
import hashlib
import ecdsa
from ecdsa.util import sigdecode_der
from flask import Flask, request
from http import HTTPStatus
app = Flask(__name__)
FORDEFI_PUBLIC_KEY = """
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEQJ0NeDYQqqeCvgDofFsgtgaxk+dx
ybi63YGJwHz8Ebx7YQrmwNWnW3bG65E8wGHqZECjuaK2GKHbZx1EV2ws9A==
-----END PUBLIC KEY-----
"""
signature_pub_key = ecdsa.VerifyingKey.from_pem(FORDEFI_PUBLIC_KEY)
@app.route("/", methods=["POST"])
def handle():
signature = request.headers.get("X-Signature")
if signature is None:
return "Missing signature", HTTPStatus.UNAUTHORIZED
if not signature_pub_key.verify(
signature=base64.b64decode(signature),
data=request.get_data(),
hashfunc=hashlib.sha256,
sigdecode=sigdecode_der,
):
return "Invalid signature", HTTPStatus.UNAUTHORIZED
print(f"Received event: {request.get_data().decode()}")
return "OK", HTTPStatus.OK
if __name__ == "__main__":
app.run(port=8080, debug=True) Resend notifications
Resend all failed webhook notifications
To achieve high reliability and deliverability of event notifications, Fordefi implements a webhook retry when an attempt to send a webhook message has failed. The mechanism employs exponential backoff, where the wait time is increased exponentially after every failure by two seconds, four seconds, eight seconds and so on, until the maximum backoff time of 12 hours is reached. Then, a retry is attempted each 12 hours, until three days after the first attempt, when retries end.
Resend missed notifications for a specific transaction
In the event that you missed a webhook, you can POST a Trigger Transaction Webhook call. It will resend two transaction-state-change events: one, for the first state of the transaction and a second, for the last state of the transaction.