Migrating from v1 to v2

Managing v1 chainhooks

Legacy v1 chainhooks remain read-only in the Platform UI; you manage them through the Platform API.

What you'll learn

Capture and analyze all existing v1 chainhooks.

Convert predicate-based filters into explicit v2 event definitions.

Prerequisites

API access to both the Platform API and Chainhook REST API (same HIRO_API_KEY).
Local SDK (@hirosystems/chainhooks-client) or curl for REST calls.
Environment variable HIRO_API_KEY set for the CLI and code samples.

Inventory v1 chainhooks

Use the Platform API to fetch every chainhook that still fires in production.

CLI

curl -sS "https://api.platform.hiro.so/v1/ext/$HIRO_API_KEY/chainhooks" \
  -H "content-type: application/json"

TypeScript

export async function listV1Chainhooks() {
  const response = await fetch(
    `https://api.platform.hiro.so/v1/ext/${process.env.HIRO_API_KEY}/chainhooks`,
    { headers: { 'content-type': 'application/json' } }
  );

  if (!response.ok) throw new Error(response.statusText);
  return (await response.json()) as any[];
}

const chainhooks = await listV1Chainhooks();
console.log(`Found ${chainhooks.length} v1 chainhooks`);

Inspect a chainhook

Pull the full definition for each UUID so you can convert custom filters and metadata.

CLI

curl -sS \
  "https://api.platform.hiro.so/v1/ext/$HIRO_API_KEY/chainhooks/$CHAINHOOK_UUID" \
  -H "content-type: application/json"

TypeScript

export async function getV1Chainhook(uuid: string) {
  const response = await fetch(
    `https://api.platform.hiro.so/v1/ext/${process.env.HIRO_API_KEY}/chainhooks/${uuid}`,
    { headers: { 'content-type': 'application/json' } }
  );

  if (!response.ok) throw new Error(response.statusText);
  return await response.json();
}

Map configuration to v2

Translate v1 structures to v2 fields before provisioning new hooks.

v1 Concept	v2 Target	Notes
`if_this.scope`	`filters.events[].type`	Replace `scope/action` combos with a single event type.
`if_this.actions`	`type`	`transfer` maps to `*_transfer`.
`then_that.http_post.url`	`action.url`	v2 handles secrets automatically.
`networks.mainnet`	`network: "mainnet"`	Create one v2 hook per network.
`authorization_header`	Webhook secret management	Use `rotateConsumerSecret()` after registration.

Example Conversion

// v1 (Platform API)
{
  "name": "stx-transfers",
  "networks": {
    "mainnet": {
      "if_this": { "scope": "stx_event", "actions": ["transfer"] },
      "then_that": { "http_post": { "url": "https://example.com/webhooks" } }
    }
  }
}

// v2 (SDK)
import { ChainhooksClient, CHAINHOOKS_BASE_URL } from '@hirosystems/chainhooks-client';

const client = new ChainhooksClient({
  baseUrl: CHAINHOOKS_BASE_URL.mainnet,
  apiKey: process.env.HIRO_API_KEY!,
});

await client.registerChainhook({
  version: '1',
  name: 'stx-transfers',
  chain: 'stacks',
  network: 'mainnet',
  filters: {
    events: [{ type: 'stx_transfer' }],
  },
  action: {
    type: 'http_post',
    url: 'https://example.com/webhooks',
  },
  options: {
    decode_clarity_values: true,
    enable_on_registration: true,
  },
});

Create v2 chainhooks

Provision each chainhook with the SDK or REST API, mirroring the mapped filters.

REST

curl -sS -X POST "https://api.mainnet.hiro.so/chainhooks/v1/me/" \
  -H "content-type: application/json" \
  -H "x-api-key: $HIRO_API_KEY" \
  -d @v2-chainhook.json

Chainhook SDK

const client = new ChainhooksClient({
  baseUrl: CHAINHOOKS_BASE_URL[config.network],
  apiKey: process.env.HIRO_API_KEY!,
});
const chainhook = await client.registerChainhook(config);

Validate and retire v1

Stream events through both versions, confirm delivery, then clean up the legacy definitions.

Best practices

Keep both v1 and v2 hooks active until you verify delivery parity.

Enablement Checks

const chainhook = await client.getChainhook(v2Uuid);
console.log(chainhook.status.enabled);

Delete with cURL

curl -sS -X DELETE \
  "https://api.platform.hiro.so/v1/ext/$HIRO_API_KEY/chainhooks/$CHAINHOOK_UUID" \
  -H "content-type: application/json"

Delete with SDK

export async function deleteV1Chainhook(uuid: string) {
  const response = await fetch(
    `https://api.platform.hiro.so/v1/ext/${process.env.HIRO_API_KEY}/chainhooks/${uuid}`,
    { method: 'DELETE', headers: { 'content-type': 'application/json' } }
  );

  if (!response.ok) throw new Error(response.statusText);
  return await response.json();
}

Filter Translation Reference

Common scopes

v1	Typical Actions	v2	Extras
`stx_event`	`transfer`	`stx_transfer`	Include `sender` or `recipient` filters as needed.
`contract_call`	n/a	`contract_call`	Add `contract_identifier` and `function_name`.
`ft_event`	`transfer`	`ft_transfer`	Specify `asset_identifier`.
`nft_event`	`transfer`, `mint`	`nft_transfer` · `nft_mint`	Provide `asset_identifier`.

Example

// v1 filter
{
  "scope": "stx_event",
  "actions": ["transfer"]
}

// v2 filter
{
  "events": [
    {
      "type": "stx_transfer",
      "recipient": "SP3FBR2AGKQX0..."
    }
  ]
}

SDK Documentation→

SDK Documentation

Filter Reference→

Filter Reference

Migrating from v1 to v2

SDK Documentation→

Filter Reference→

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