[bjarn]

What changed

Adds webhooks().deliveries().retry(webhookId, deliveryId[, RequestOptions]), next to deliveries().retrieve(...). It sends a webhook delivery's original payload to the webhook again now. The retry counts as a delivery attempt; if it fails with a retryable error, automatic retries continue. It needs the team token, sends no request body and takes no Idempotency-Key.

The regenerated types also add nextRetryAt() to WebhookDeliveryData and WebhookDeliveryListData.

Non-breaking. Suggested bump: minor (3.1.0 → 3.2.0).

API changes in the regenerated types

Change	Java SDK
New POST /webhooks/{webhookId}/deliveries/{deliveryId}/retry (team token, no body). 202 returns {message, delivery_id}. 409 with WEBHOOK_DISABLED, WEBHOOK_DELIVERY_NOT_RETRYABLE or WEBHOOK_DELIVERY_RETRY_IN_PROGRESS; also 401, 403, 404 and 429 (Retry-After).	Operations.RETRY_WEBHOOK_DELIVERY, new RetryWebhookDeliveryResponse record, webhooks().deliveries().retry(...). A 409 is thrown as the existing ConflictException, with getCode() returning the error code.
next_retry_at on WebhookDeliveryData and WebhookDeliveryListData: when the next automatic retry is due, or null when none is scheduled. Optional and nullable.	New String nextRetryAt() record component and Builder.nextRetryAt(...) on both records.
payload, response_body, response_headers and error_message on WebhookDeliveryData: the description now says they are always included with a team API token.	Javadoc only; the types are unchanged.
The webhook delivery endpoints and regenerate-secret now document 401, 403 and 429 bodies as either {message} or {error: {code, message, ...}}.	Error lists in Operations updated. The error parser already handled both shapes; new tests cover both on the retry endpoint.

Every generated file also has a new spec header.

Compatibility note

WebhookDeliveryData and WebhookDeliveryListData are records, so their canonical constructors gain a nextRetryAt argument. Code that calls new WebhookDeliveryData(...) or new WebhookDeliveryListData(...) directly (for example in test fixtures) must add the argument; builders are unaffected. Earlier minor releases shipped the same kind of change, so this is released as a minor.

Usage

RetryWebhookDeliveryResponse retry = lettermint.webhooks().deliveries().retry(webhookId, deliveryId);
System.out.println(retry.message() + " " + retry.deliveryId());

WebhookDeliveryData delivery = lettermint.webhooks().deliveries().retrieve(webhookId, deliveryId);
System.out.println(delivery.nextRetryAt()); // null when no automatic retry is scheduled

try {
    lettermint.webhooks().deliveries().retry(webhookId, deliveryId);
} catch (ConflictException e) {
    System.out.println(e.getCode()); // e.g. WEBHOOK_DELIVERY_NOT_RETRYABLE
}

Checks

• ./gradlew checkGeneratedTypes: generated files up to date (206 files)
• ./gradlew clean build --no-daemon on JDK 24: BUILD SUCCESSFUL (tests, javadoc, generated types check)
• ./gradlew clean build --no-daemon on JDK 17, run as CI runs it: BUILD SUCCESSFUL; 93 tests, 0 failures
• Build output check from CI: Automatic-Module-Name: co.lettermint present, okhttp not bundled
• New tests in TeamApiTest:
  • everyOperationIsReachable now calls deliveries().retry and covers all operations
  • retriesAWebhookDelivery: path, POST, team bearer token, no body, no content type, no Idempotency-Key, parsed 202 response, path-parameter validation, missing team token
  • retryingADeliveryMapsErrorsToApiExceptions: 409 WEBHOOK_DELIVERY_NOT_RETRYABLE as ConflictException with its code; 429 with a {message} body plus Retry-After, and with an {error} body; 401; 404
  • webhookDeliveriesExposeTheNextRetryAt: value, null and absent, on retrieve and list

Not run locally

• JDK 21 and 25, and Windows from the CI matrix (not installed locally).
• ./gradlew checkstyleMain checkstyleTest: these tasks do not exist in this project (the code-style workflow runs them with || true).

Suggested release tag

v3.2.0. It also covers the unreleased messages resend and per-email batch idempotency keys.

🤖 Generated with Claude Code