--- title: "Read Session" method: GET path: "/sessions/{session_id}" tags: ["authenticated", "sessions"] --- # Read Session `GET /sessions/{session_id}` ## Request - Base URL: `https://api-docs.upsmith.com` (the document declares no server; this is the origin it was published from) - URL: `https://api-docs.upsmith.com/sessions/{session_id}` - Auth: one of: - API key in header `x-api-key` - HTTP bearer ## Path parameters - `session_id` string, required ## Query parameters - `cursor` string, nullable ## Headers - `organization-id` string, nullable - `x-user-id` string, nullable - `timezone` string - `x-actor-email` string, nullable - `x-request-source` string, nullable - `x-operation-id` string, nullable - `x-commit-message` string, nullable - `x-confirmation-id` string, nullable - `x-chat-id` string, nullable ## Response `200` Successful Response - SessionDetailPublic - `session_id` string, required - `in_progress` boolean, required - `last_event` TimelineEventPublic - `id` string, required - `organization_id` string, required - `engagement_id` string, required - `origin` 'internal' | 'external', required - `role` 'user' | 'agent' | 'contact' | 'provider', required - `type` 'action' | 'interaction' | 'llm_response', required - `user_id` string, nullable - `created_at` string, date-time, required - `updated_at` string, date-time, required - `deleted_at` string, date-time, nullable - `user_initials` string, nullable - `interaction` TimelineEventInteractionPublic - `id` string, required - `channel_id` string, required - `contact_method_id` string, nullable - `image_id` string, nullable - `external_id` string, nullable - `twilio_message_status` string, nullable - `twilio_error_code` string, nullable - `telnyx_message_status` string, nullable - `telnyx_error_code` string, nullable - `metadata_json` object, nullable - `status` 'pending' | 'delivered' | 'received' | 'failed', required - `content` string, required - `translated_content` string, nullable - `deliver_after` string, date-time, nullable - `image` string, nullable - `image_content_type` string, nullable - `contact_method` ContactMethodPublic - `id` string, required - `type` 'phone' | 'email' | 'fax' | 'social', required - `social_platform` 'meta_messenger' | 'google_lsa' | 'instagram' | 'yelp' | 'thumbtack' - `phone_number` string, nullable - `email` string, nullable - `person_name` string, nullable - `person_role` string, nullable - `action` TimelineEventActionPublic - `id` string, required - `tool_module_id` string, required - `success` boolean, nullable - `type` 'booking' | 'booking_request' - `invocation_source` 'llm' | 'precall': Who invoked the tool that produced this action. ``LLM`` — the agent's model chose to call the tool mid-conversation. ``PRECALL`` — the system/operator ran the tool up front (before-turn hooks / pre-agent preload) and injected the result into the prompt; the model did not choose it. ``NULL`` means **legacy / unknown** — the row predates reliable tagging (ENG-4234) and is NOT necessarily LLM-invoked. Precalled tools were saved as actions before #4213 (2026-04-04), then not saved at all until ENG-4234, so historical rows are a mix we deliberately don't reconstruct. Readers must treat NULL as its own bucket, never fold it into ``LLM``. Only rows written after ENG-4234 shipped carry a trustworthy value. - `input` string, required - `output` string, required - `tool_module` ToolModulePublic - `id` string, required - `created_at` string, date-time, nullable - `updated_at` string, date-time, nullable - `deleted_at` string, date-time, nullable - `title` string, required - `description` string, required - `function` string, required - `disabled_reason` string, nullable - `read_only` boolean, required - `llm_response` EventLLMResponsePublic - `id` string, required - `phase` 'ModelRequest' | 'ModelResponse', required: Phase for persisted LLM transcript rows. Like other engagement ``StrEnum`` + ``sa.Enum(native_enum=False)`` columns, PostgreSQL stores the member **name** (``REQUEST`` / ``RESPONSE``) for ``llmphase``. The **value** strings are pydantic-ai message kinds (``ModelRequest`` / ``ModelResponse``) and are not written to this column. - `model` string, required - `content` union - object - unknown[] - unknown - string - `duration_ms` integer, nullable - `timeline` PageTimelineEventPublic, required - `items` TimelineEventPublic[], required - `id` string, required - `organization_id` string, required - `engagement_id` string, required - `origin` 'internal' | 'external', required - `role` 'user' | 'agent' | 'contact' | 'provider', required - `type` 'action' | 'interaction' | 'llm_response', required - `user_id` string, nullable - `created_at` string, date-time, required - `updated_at` string, date-time, required - `deleted_at` string, date-time, nullable - `user_initials` string, nullable - `interaction` TimelineEventInteractionPublic - `id` string, required - `channel_id` string, required - `contact_method_id` string, nullable - `image_id` string, nullable - `external_id` string, nullable - `twilio_message_status` string, nullable - `twilio_error_code` string, nullable - `telnyx_message_status` string, nullable - `telnyx_error_code` string, nullable - `metadata_json` object, nullable - `status` 'pending' | 'delivered' | 'received' | 'failed', required - `content` string, required - `translated_content` string, nullable - `deliver_after` string, date-time, nullable - `image` string, nullable - `image_content_type` string, nullable - `contact_method` ContactMethodPublic - `id` string, required - `type` 'phone' | 'email' | 'fax' | 'social', required - `social_platform` 'meta_messenger' | 'google_lsa' | 'instagram' | 'yelp' | 'thumbtack' - `phone_number` string, nullable - `email` string, nullable - `person_name` string, nullable - `person_role` string, nullable - `action` TimelineEventActionPublic - `id` string, required - `tool_module_id` string, required - `success` boolean, nullable - `type` 'booking' | 'booking_request' - `invocation_source` 'llm' | 'precall': Who invoked the tool that produced this action. ``LLM`` — the agent's model chose to call the tool mid-conversation. ``PRECALL`` — the system/operator ran the tool up front (before-turn hooks / pre-agent preload) and injected the result into the prompt; the model did not choose it. ``NULL`` means **legacy / unknown** — the row predates reliable tagging (ENG-4234) and is NOT necessarily LLM-invoked. Precalled tools were saved as actions before #4213 (2026-04-04), then not saved at all until ENG-4234, so historical rows are a mix we deliberately don't reconstruct. Readers must treat NULL as its own bucket, never fold it into ``LLM``. Only rows written after ENG-4234 shipped carry a trustworthy value. - `input` string, required - `output` string, required - `tool_module` ToolModulePublic - `id` string, required - `created_at` string, date-time, nullable - `updated_at` string, date-time, nullable - `deleted_at` string, date-time, nullable - `title` string, required - `description` string, required - `function` string, required - `disabled_reason` string, nullable - `read_only` boolean, required - `llm_response` EventLLMResponsePublic - `id` string, required - `phase` 'ModelRequest' | 'ModelResponse', required: Phase for persisted LLM transcript rows. Like other engagement ``StrEnum`` + ``sa.Enum(native_enum=False)`` columns, PostgreSQL stores the member **name** (``REQUEST`` / ``RESPONSE``) for ``llmphase``. The **value** strings are pydantic-ai message kinds (``ModelRequest`` / ``ModelResponse``) and are not written to this column. - `model` string, required - `content` union - object - unknown[] - unknown - string - `duration_ms` integer, nullable - `total` integer, nullable - `cursor` string, nullable ## Other responses - `422`: Validation Error --- [API](https://skmtc.dev/upsmith/apis/upsmith-api.md) - [All operations](https://skmtc.dev/upsmith/apis/upsmith-api/llms.txt) - [OpenAPI document](https://skmtc.dev/upsmith/apis/upsmith-api/revisions/cce8b07a5787?raw)