Changelog

​

Webhook payloads carry the conversation transcript

• session.ended and session.finalized payloads now include messages — the conversation transcript as { role, content, timestamp? } objects (user/assistant turns only). Receivers no longer need to call the session API to fetch it.
• messagesCount is now defined as the length of messages. If you used it as a raw stored-message total (tool traffic included), the number is now smaller.
• session.finalized documents its recordingUrl field, and the docs now reflect that recording processing gates finalization for call sessions — when session.finalized arrives, the recording outcome is settled and a successful recording’s URL is in the payload.
• The webhook settings UI shows all four events in one list.
• See the updated payload reference.

​

Legacy API paths move to /v1 — sunset 2026-07-11

• Chat completions, sessions, webhook subscriptions, and outbound calls now have /v1 paths. The new paths are live today and use the same Developer Key authentication.
• The legacy paths under /project/:projectId/integration/* and /project/:projectId/webhooks/* are deprecated and stop working on 2026-07-11. Until then they keep working and return Deprecation / Sunset response headers.
• Only the path changes — request and response bodies are unchanged. See the migration guide for the full old → new path table.

​

Post Webhooks

• Post-session webhook now supports four events — session.ended, call.ended, session.finalized, and recording.ready — selectable per agent.
• session.finalized fires once every expected step (conversation end + call end, where applicable) has completed, and merges the data from earlier events into one body so receivers only need to handle one callback.
• recording.ready (call sessions only) fires when the call recording finishes processing, carrying a short-lived download URL on success. It is independent of session.finalized and may arrive before or after it. (Superseded — recording processing now gates session.finalized; see the July 2026 update above.)
• Webhook settings UI gains a multi-select with per-event tooltips describing the trigger and payload fields.
• New API reference at Post Webhooks covers configuration, payload schemas, delivery semantics, and an end-to-end receiver example.

​

Legacy API keys deprecated — sunset 2026-05-10

• Legacy project-scoped API keys (sk_ and buzz_live_ prefixes) and the x-api-key header are deprecated and stop working on 2026-05-10.
• The old /knowledgebases/* route is deprecated; use /v1/projects/:projectId/knowledgebases/*.
• All external integrations should migrate to a Developer Key (dk_ prefix) authenticated as Authorization: Bearer dk_.... Developer Keys can be created in Developer Keys from your account menu.
• See the Legacy API Key migration guide for step-by-step instructions.

​

Number Pool management

• Released unified Number Pool management for shared inbound and outbound operations.
• Expanded workflow automation coverage so phone operations can be orchestrated in more scenarios.

​

Admin usage dashboard refinement

• Refactored admin and usage views for clearer cost and credit tracking in daily operations.

​

Inbound reliability hardening

• Fixed anonymous caller-ID mapping and hardened inbound configuration deletion flows.

​

Session lifecycle controls

• Added session termination API and configurable auto-termination controls for voice sessions.
• Introduced Agent Memory to improve continuity across repeated customer interactions.

​

Outbound workflow expansion

• Expanded in-app outbound call workflows and improved end-call messaging behavior.

​

Call flow stability fixes

• Fixed duplicate transfer triggers, early inbound termination handling, and timeout-related failures.

​

Access control and governance

• Launched three-tier RBAC (Admin, Manager, Viewer).
• Integrated call logs directly into session history and added richer post-session data extraction.

​

Session and voice UI refactor

• Refactored session history, voice settings, and agent editor UI for higher operational clarity.

​

Call status consistency fixes

• Fixed hang-up edge cases and improved call status consistency and session close reliability.

​

Outbound calling in app

• Released app-level outbound calling with event-driven sequencing for continuous dialing operations.
• Upgraded call logs and session history with audio playback and collaboration-focused review flows.

​

Integration and variable UI updates

• Refactored integrations and variable-management UI for better support-team usability.

​

Recording and history fixes

• Fixed recording timing, duplicate outbound number handling, and session history loading issues.

​

Real-time phone agent launch

• Launched real-time phone agent operations with a dedicated live call interface.
• Refactored execution modes and before-start initialization for more predictable call behavior.

​

Pathway editor refactor

• Reworked pathway editor and navigation UI, including tabbed flows and a collapsible sidebar.

​

Preview and connection fixes

• Fixed duplicate voice call connections, session ID edge cases, and preview-call stability issues.

​

Speech and SIP expansion

• Expanded speech configuration coverage and improved multilingual handling for phone scenarios.
• Enhanced SIP trunking and session controls with stronger retry, validation, and routing behavior.

​

Operations visibility updates

• Improved session history and phone preview UX with timeline-oriented visibility for operations teams.

​

Session reliability fixes

• Fixed session serialization errors, empty knowledge-base failures, and SIP timeout interruption issues.

​

Core telephony foundations

• Delivered core end-call, end-session, and transfer capabilities for phone-agent workflows.
• Added call log services and recording support to improve QA and support-team traceability.

​

Core product UI refactor

• Refactored core operation screens and shared UI components for better day-to-day usability.

​

Core stability fixes

• Fixed duplicate session creation, first-message latency, and preview/transcription interaction issues.