roboto.ai.core

What the caller had open: attached datasets, files, and visualizer state.

What the caller was looking at when they composed the message this block sits on.

Superseded shape: the same payload used to be persisted as a whole ROBOTO-role message whose text was a <ctx>...</ctx> marker (ENG-2185). Readers still accept that form for threads written before this type existed; nothing emits it any more.

Stand-in block kept in a message the deletion pass emptied entirely.

A message reduced to nothing but tombstones would break user/assistant alternation if it dropped from the payload. Replacing its content with this single filler keeps the message — and its role — in place. The model sees it as <Deleted in compression>. Only the cross-message deletion pass produces it, so it appears only inside a DELETED-tier compressed variant, never in the verbatim original thread the SDK and UI read.

Tombstone marking a content block elided by compression.

Appears only inside a DELETED-tier compressed variant. Both producers — message-tier compression dropping a pure-filler text run, and the cross-message deletion pass dropping a whole tool exchange — store their output at the DELETED tier, so a message carrying one is always a DELETED-tier variant. Never in the verbatim original thread the SDK and UI read.

Error information when message generation fails.

Plain text content from users or AI responses.

Results returned from tool executions.

Tool invocation requests from the AI assistant.

Optional error code for programmatic handling.

User-friendly error message describing what went wrong.

Optional error code for programmatic handling.

User-friendly error message describing what went wrong.

List of content blocks that make up this message.

Timestamp when this message was created.

The role of the message sender (user, assistant, or roboto).

Current generation status of this message.

Message generation was cancelled by the user.

Message generation has finished and content is complete.

Message generation failed due to an error.

Message content is currently being generated.

Message has been queued but generation has not begun.

AI agent responding to user queries and requests.

Roboto system providing tool results and system information.

Human user sending messages to the agent.

The actual text content of the message.

Text fragment from the streaming response.

Updated token for the next incremental synchronization.

Latest snapshot of every goal declared in the thread, ordered by allocation. None means there has been no change since the previous delta — clients should retain the snapshot they already hold. An empty list means the thread has no declared goals. A non-empty list is the authoritative current snapshot and replaces any prior value.

New or updated messages indexed by their position in the conversation.

Discard held messages from this index onward before applying this delta.

A delta’s messages normally extend what a client already holds, because the server sends only content the client has not seen. That breaks when a turn is abandoned partway and regenerated: the replacement message reuses the same index, so what the client holds at that index is text from an attempt that no longer exists, and appending to it would splice the real reply onto a discarded draft.

When this field is set, the client must truncate its held messages to indices strictly below it, then apply messages_by_idx and adopt continuation_token as usual — the server has rewound the stream to that point and will resend it. None (the common case) means append as normal.

Updated status of the agent thread.

Latest snapshot of the thread’s task list, ordered by position. None means no change since the previous delta — clients should retain the snapshot they already hold. An empty list means the thread has no tasks. A non-empty list is the authoritative current snapshot and replaces any prior value.

Updated title of the agent thread.

Token used for incremental updates and synchronization.

Timestamp when this agent thread was created.

User ID of the person who created this agent thread.

Serialized RobotoPrincipal ("ptype:id") that started this thread, e.g. "user:jo@example.com" or "invocation:iv_123". Unlike created_by, this preserves whether the thread was driven by a person, a device, or an action invocation. None on threads created before this field existed.

If this thread was started via the agent launch flow, the id of the agent that produced it. None for threads started directly through POST /v1/ai/threads. Forks do not inherit this field — a fork is its own thread.

If a trigger’s start_agent target launched this thread, the id of that trigger. None for every other thread, including one launched from the same agent by a person. Set alongside created_from_agent_id, which names the agent; this names what decided to run it. Forks do not inherit this field — a fork is its own thread.

Message sequence number in the source thread that this fork was taken from.

Populated in tandem with forked_from_thread_id; both are None for threads that were not created as a fork.

If this thread was forked, the id of the source thread. None otherwise.

Deserialization also accepts the legacy forked_from_session_id spelling for backward compatibility.

Goals declared across this thread’s turns, ordered by the turn that declared them. None means goals were not loaded for this record; an empty list means they were loaded but the thread never declared any.

Complete list of messages in the conversation.

Configuration for the model, should be a dictionary conforming to [ConfigDict][pydantic.config.ConfigDict].

Model profile used for this agent thread (e.g., ‘standard’, ‘advanced’).

Organization ID that owns this agent thread.

The surface that owns this thread.

Set by Roboto when the thread is created; it cannot be supplied by a caller. A thread owned by a surface outside Roboto refuses new messages over the API, raising RobotoThreadReadOnlyException; reading, cancelling, and rating it stay open, and a fork does not inherit the origin, so the copy is writable.

None on threads created before this field existed, and equivalent to ThreadOrigin.API — every surface that predates the field was Roboto’s own. It stays nullable until those rows are backfilled.

When the calling user pinned this thread, or None if they have not.

A pin is a personal bookmark, so two users reading the same thread see different values here. Pin and unpin through roboto.ai.agent_thread.AgentThread.set_pinned(). Only GET /v1/ai/threads and POST /v1/ai/threads/search report it; reads of a single thread leave it None whatever the pin state.

Current status of this agent thread.

The thread’s task list, ordered by AgentTask.position. None means tasks were not loaded for this record; an empty list means they were loaded but the thread has none.

Unique identifier for this agent thread.

Deserialization also accepts the legacy session_id and chat_id spellings for backward compatibility; the canonical attribute name is thread_id.

Title of this agent thread.

Who can read this thread. PRIVATE (the default) restricts reads to the created_by user and Roboto admins; ORG opens the thread to every member of org_id.

Client must execute pending tool uses and submit results.

The agent runner exhausted its corrective re-prompt budget without achieving every declared goal for the most-recent turn. Signals to clients that the thread needs human intervention before it can continue.

Thread has been created but no messages have been sent.

Roboto is generating a message.

User has the turn to send a message.

What the tool returned: free-form text, or a JSON object or array of structured data.

Independent of any model provider’s wire format (provider-agnostic, like AgentToolUseContent.input). None on results written before this field existed; use resolve_payload() to read old and new results uniformly.

Legacy provider-formatted response envelope (Bedrock toolResult shape).

Kept so results written before payload existed remain readable; deprecated for new readers, who should call resolve_payload() instead of parsing this field.

Populated only where the server-side envelope is in scope: threads read over the API arrive with this field stripped (and, for legacy rows, with payload synthesized from it server-side before the strip), so API/SDK readers should not expect it.

Wall-clock execution time of the tool in milliseconds.

Outcome of the tool execution (e.g. ‘success’, ‘error’).

Name of the tool that was executed.

Identifier of the tool invocation this result corresponds to.

Name of the tool that was invoked.

Raw tool output payload (from the underlying tool_result’s raw_response). May be None for errored invocations or for tools that return no data.

Wall-clock execution time of the tool in milliseconds, as reported by the tool-result content. None only if the underlying content omits it.

Whether the tool invocation succeeded.

Unique identifier for this tool invocation.

Parsed tool input parameters chosen by the LLM (provider-agnostic).

Raw, unparsed request payload for this tool invocation.

Name of the tool the LLM is requesting to invoke.

Unique identifier for this tool invocation, used to correlate with its result.

Parsed tool input parameters chosen by the LLM.

Name of the tool being invoked.

Unique identifier for this tool invocation.

Upper bound (inclusive) of the analysis window, expressed as nanoseconds since the Unix epoch.

Lower bound (inclusive) of the analysis window, expressed as nanoseconds since the Unix epoch.

IDs of collections the user is currently viewing or has selected.

IDs of datasets the user is currently viewing or has selected.

IDs of devices the user is currently viewing or has selected.

Device IDs are user-chosen rather than minted by Roboto, so unlike the other fields here a value may look like anything at all.

What the client shows the user as the name of that t=0 — “Start of workspace”, or a picked timestamp rendered as local time.

Informational, like every field here: it lets the agent name the instant an offset is counted from, rather than leaving the reader to guess. None whenever display_time_anchor_ns is None.

Epoch nanoseconds the client renders as t=0, set only while the user is reading timestamps as an elapsed count from that instant, and None otherwise.

Informational, like every field here: it lets the agent resolve a bare relative time the user types (“around 65 s”) to an absolute instant, and the agent still reports absolute nanoseconds back.

IDs of files the user is currently viewing or has selected.

Miscellaneous client-supplied context that doesn’t fit the typed fields above. Use sparingly; prefer adding a typed field when a recurring shape emerges.

The resource table on screen, when the user composed the message from one: its target (datasets, files, …) and its live definition – the same shape a View stores: RoboQL text or filter controls, plus visible columns, sort, and page size.

Sent whether or not a View is loaded, so the agent can describe ad-hoc filters and so “save what I’m looking at as a View” names something concrete. Informational, like every field here.

IDs of Views – saved, shareable searches over one resource type – applied to a resource table the user is looking at.

Informational, like every field here: it lets the agent resolve “this View” without the user naming it, and the agent still reads the View through its own tools.

State of the visualizer, when the user composed the message from the visualizer view. A relatively opaque JSON blob.

Short description of the profile’s characteristics.

Profile identifier, e.g. ‘standard’ or ‘advanced’.

Whether this profile is selected by default for new threads.

Human-readable display label.

The legacy value, as carried by AgentToolResultContent.raw_response. None is accepted.

The tool’s text or JSON output, or None when the value is absent, is a malformed envelope, or is an envelope carrying no text or JSON block.