Minor Changes

• c523063: feat: add the agents.conversations.* methods for Slack Code (create, archive, setProperties, setView, setCommands, listViews, removeView, getCanvas, setCanvasContent).

Patch Changes

• Updated dependencies [ca6f416]
• Updated dependencies [abf184e]
• Updated dependencies [d420d00]
• Updated dependencies [52eeb05]
  • @slack/types@3.2.0

Minor Changes

• ca6f416: feat(types): add ContainerBlock block interface
• abf184e: feat: add the data_table Block Kit block type (DataTableBlock)
• d420d00: feat: allow raw_number cells in TableBlock rows (adds RawNumberElement)
• 52eeb05: feat(types): add optional action_id property to the WorkflowButton block element

Minor Changes

• 334e6a6: Support undici@^8 as a peer dependency in addition to undici@^7. undici@^8 requires Node.js >=22.19; undici@^7 continues to support Node.js >=20.

  The default dispatcher now pins the WebSocket connection to HTTP/1.1, since undici@^8 offers HTTP/2 by default. To do the same with a custom ProxyAgent dispatcher, pass requestTls: { allowH2: false }.

Patch Changes

• e22facd: fix(socket-mode): stop spurious ping/pong WARN from other undici WebSockets (#2743). Route diagnostics frames by reference identity instead of instanceof, which failed across undici copies (e.g. Node's global WebSocket).
• Updated dependencies [c523063]
  • @slack/web-api@8.2.0

Patch Changes

• 0ee1d99: fix: revert internal packages requiring esm loading for backward compatible support (#2711)

Patch Changes

• 3a459f6: fix: stop WebhookTrigger.send() from retrying after a successful delivery

  A 2xx response with an empty or non-JSON body no longer throws. It now resolves to { ok: true }. Before this fix that body threw a parse error, which was retried as a request error and caused duplicate Workflow Builder runs. A valid { ok: false, error } body is still surfaced to the caller.

• Updated dependencies [916d8e9]

• Updated dependencies [f5e9a01]

  • @slack/types@3.1.0

Patch Changes

• 0ee1d99: fix: revert internal packages requiring esm loading for backward compatible support (#2711)

Minor Changes

• 955e6b9: feat(web-api): add support for admin.users.getExpiration

• 4322e14: feat(web-api): add agents.sessions.rename and agents.sessions.setStatus

• 4ba30a1: feat(web-api): add session_status to chat.stopStream arguments

• bff3398: feat(web-api): add webapi response changes as of 2026-08-21

  Regenerate response types with new stable response properties (e.g. agent_session on message-bearing responses, ListView grouping/sort/filter fields, bots.info connector/workflow flags).

  Two fields are removed from UsersListResponse, neither of which is a real success-response property:

  • Member.is_connector_bot — not returned by users.list; this flag is surfaced on bots.info (added here to BotsInfoResponse).
  • arg — an error-response echo field, not part of a successful users.list body.

• f5fd35a: feat(web-api): add blocks.validate method

Patch Changes

• Updated dependencies [916d8e9]
• Updated dependencies [f5e9a01]
  • @slack/types@3.1.0

Minor Changes

• 916d8e9: feat(types): add agent_session_stopped and agent_session_title_changed events
• f5e9a01: feat(types): add optional min_lines and max_lines properties to RichTextInput element

Patch Changes

• 5c2362c: Fix leaked TCP sockets on disconnect (#2709). Moving from ws to undici's WebSocket in 3.0.0 dropped every force-close mechanism, so ESTABLISHED sockets were never torn down and accumulated toward Slack's per-app connection cap.

  • disconnect() now arms a 30s close-handshake timeout, so a peer that never replies to the close frame no longer leaves the socket stuck in CLOSING indefinitely.
  • On the default dispatcher path, the underlying TCP socket is now captured and force-destroyed during cleanup. A user-supplied dispatcher owns its own socket and instead relies on the close-handshake timeout — this limitation is documented on the dispatcher option.
  • The close handler no longer schedules a reconnect on stale or overlapping close events, so at most one reconnect is scheduled per disconnect.

Major Changes

• fc98c8c: Drop Node.js 18 support. The minimum supported Node.js version is now 20.

• fc98c8c: Restructured error classes to use proper Error subclasses extending a new SlackWebhookError base class.

  Breaking changes to IncomingWebhookHTTPError:

  • The original property has been removed. HTTP response details are now direct properties:
    • statusCode: number
    • statusMessage: string
    • body: string
  • Migrate from error.original.response.status to error.statusCode, error.original.response.data to error.body, etc.

  Breaking changes to IncomingWebhookRequestError:

  • The original property is now a standard Error (previously it was an AxiosError). The original error is also available via the standard cause property.

  Removed factory functions (use new with the corresponding class instead):

  • requestErrorWithOriginal() → new IncomingWebhookRequestError(original)
  • httpErrorWithOriginal() → new IncomingWebhookHTTPError(statusCode, statusMessage, body)
  • errorWithCode() — Use the specific error class directly.

  Migration: Replace if (error.code === ErrorCode.HTTPError) with if (error instanceof IncomingWebhookHTTPError). You can also catch all webhook errors with if (error instanceof SlackWebhookError).

  The CodedError interface is deprecated — use instanceof checks with the SlackWebhookError base class or specific error subclasses instead.

• fc98c8c: Replaced axios with the standard Fetch API for HTTP transport.

  Removed options from IncomingWebhookDefaultArguments:

  • agent — Use the new fetch option to provide a custom fetch implementation with proxy or TLS support. For proxies, prefer the built-in http.setGlobalProxyFromEnv() or NODE_USE_ENV_PROXY=1 (Node.js 24+). For advanced use cases:

    import { fetch, Agent } from "undici";
    const webhook = new IncomingWebhook(url, {
      fetch: (url, init) =>
        fetch(url, {
          ...init,
          dispatcher: new Agent({ connect: { ca: myCA } }),
        }),
    });

  The axios dependency has been removed. The default fetch implementation is globalThis.fetch (available in Node.js 20+). The timeout option remains available and is implemented via AbortController.

Minor Changes

• fc98c8c: feat: add WebhookTrigger class for Workflow Builder triggers and opt-in retries for IncomingWebhook and WebhookTrigger

  WebhookTrigger surfaces its own WebhookTriggerHTTPError and WebhookTriggerRequestError (subclasses of SlackWebhookError), so trigger failures can be distinguished from IncomingWebhook failures via instanceof.

Patch Changes

• Updated dependencies [fc98c8c]
  • @slack/types@3.0.0