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Tool Context

ToolContext dataclass

Bases: RunContextWrapper[TContext]

The context of a tool call.

Source code in src/agents/tool_context.py 
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@dataclass
class ToolContext(RunContextWrapper[TContext]):
    """The context of a tool call."""

    tool_name: str = field(default_factory=_assert_must_pass_tool_name)
    """The name of the tool being invoked."""

    tool_call_id: str = field(default_factory=_assert_must_pass_tool_call_id)
    """The ID of the tool call."""

    tool_arguments: str = field(default_factory=_assert_must_pass_tool_arguments)
    """The raw arguments string of the tool call."""

    tool_call: ResponseFunctionToolCall | None = None
    """The tool call object associated with this invocation."""

    tool_namespace: str | None = None
    """The Responses API namespace for this tool call, when present."""

    agent: AgentBase[Any] | None = None
    """The active agent for this tool call, when available."""

    run_config: RunConfig | None = None
    """The active run config for this tool call, when available."""

    def __init__(
        self,
        context: TContext,
        usage: Usage | object = _MISSING,
        tool_name: str | object = _MISSING,
        tool_call_id: str | object = _MISSING,
        tool_arguments: str | object = _MISSING,
        tool_call: ResponseFunctionToolCall | None = None,
        *,
        tool_namespace: str | None = None,
        agent: AgentBase[Any] | None = None,
        run_config: RunConfig | None = None,
        turn_input: list[TResponseInputItem] | None = None,
        _approvals: dict[str, _ApprovalRecord] | None = None,
        tool_input: Any | None = None,
    ) -> None:
        """Preserve the v0.7 positional constructor while accepting new context fields."""
        resolved_usage = Usage() if usage is _MISSING else cast(Usage, usage)
        super().__init__(
            context=context,
            usage=resolved_usage,
            turn_input=list(turn_input or []),
            _approvals={} if _approvals is None else _approvals,
            tool_input=tool_input,
        )
        self.tool_name = (
            _assert_must_pass_tool_name() if tool_name is _MISSING else cast(str, tool_name)
        )
        self.tool_arguments = (
            _assert_must_pass_tool_arguments()
            if tool_arguments is _MISSING
            else cast(str, tool_arguments)
        )
        self.tool_call_id = (
            _assert_must_pass_tool_call_id()
            if tool_call_id is _MISSING
            else cast(str, tool_call_id)
        )
        self.tool_call = tool_call
        self.tool_namespace = (
            tool_namespace
            if isinstance(tool_namespace, str)
            else get_tool_call_namespace(tool_call)
        )
        self.agent = agent
        self.run_config = run_config

    @property
    def qualified_tool_name(self) -> str:
        """Return the tool name qualified by namespace when available."""
        return tool_trace_name(self.tool_name, self.tool_namespace) or self.tool_name

    @classmethod
    def from_agent_context(
        cls,
        context: RunContextWrapper[TContext],
        tool_call_id: str,
        tool_call: ResponseFunctionToolCall | None = None,
        agent: AgentBase[Any] | None = None,
        *,
        tool_namespace: str | None = None,
        run_config: RunConfig | None = None,
    ) -> ToolContext:
        """
        Create a ToolContext from a RunContextWrapper.
        """
        # Grab the names of the RunContextWrapper's init=True fields
        base_values: dict[str, Any] = {
            f.name: getattr(context, f.name) for f in fields(RunContextWrapper) if f.init
        }
        tool_name = tool_call.name if tool_call is not None else _assert_must_pass_tool_name()
        tool_args = (
            tool_call.arguments if tool_call is not None else _assert_must_pass_tool_arguments()
        )
        tool_agent = agent
        if tool_agent is None and isinstance(context, ToolContext):
            tool_agent = context.agent
        tool_run_config = run_config
        if tool_run_config is None and isinstance(context, ToolContext):
            tool_run_config = context.run_config

        tool_context = cls(
            tool_name=tool_name,
            tool_call_id=tool_call_id,
            tool_arguments=tool_args,
            tool_call=tool_call,
            tool_namespace=(
                tool_namespace
                if isinstance(tool_namespace, str)
                else (
                    getattr(tool_call, "namespace", None)
                    if tool_call is not None
                    and isinstance(getattr(tool_call, "namespace", None), str)
                    else None
                )
            ),
            agent=tool_agent,
            run_config=tool_run_config,
            **base_values,
        )
        set_agent_tool_state_scope(tool_context, get_agent_tool_state_scope(context))
        return tool_context

tool_name class-attribute instance-attribute 

tool_name: str = (
    _assert_must_pass_tool_name()
    if tool_name is _MISSING
    else cast(str, tool_name)
)

The name of the tool being invoked.

tool_arguments class-attribute instance-attribute 

tool_arguments: str = (
    _assert_must_pass_tool_arguments()
    if tool_arguments is _MISSING
    else cast(str, tool_arguments)
)

The raw arguments string of the tool call.

tool_call_id class-attribute instance-attribute 

tool_call_id: str = (
    _assert_must_pass_tool_call_id()
    if tool_call_id is _MISSING
    else cast(str, tool_call_id)
)

The ID of the tool call.

tool_call class-attribute instance-attribute 

tool_call: ResponseFunctionToolCall | None = tool_call

The tool call object associated with this invocation.

tool_namespace class-attribute instance-attribute 

tool_namespace: str | None = (
    tool_namespace
    if isinstance(tool_namespace, str)
    else get_tool_call_namespace(tool_call)
)

The Responses API namespace for this tool call, when present.

agent class-attribute instance-attribute 

agent: AgentBase[Any] | None = agent

The active agent for this tool call, when available.

run_config class-attribute instance-attribute 

run_config: RunConfig | None = run_config

The active run config for this tool call, when available.

qualified_tool_name property 

qualified_tool_name: str

Return the tool name qualified by namespace when available.

context instance-attribute 

context: TContext

The context object (or None), passed by you to Runner.run()

usage class-attribute instance-attribute 

usage: Usage = field(default_factory=Usage)

The usage of the agent run so far. For streamed responses, the usage will be stale until the last chunk of the stream is processed.

tool_input class-attribute instance-attribute 

tool_input: Any | None = None

Structured input for the current agent tool run, when available.

__init__ 

__init__(
    context: TContext,
    usage: Usage | object = _MISSING,
    tool_name: str | object = _MISSING,
    tool_call_id: str | object = _MISSING,
    tool_arguments: str | object = _MISSING,
    tool_call: ResponseFunctionToolCall | None = None,
    *,
    tool_namespace: str | None = None,
    agent: AgentBase[Any] | None = None,
    run_config: RunConfig | None = None,
    turn_input: list[TResponseInputItem] | None = None,
    _approvals: dict[str, _ApprovalRecord] | None = None,
    tool_input: Any | None = None,
) -> None

Preserve the v0.7 positional constructor while accepting new context fields.

Source code in src/agents/tool_context.py 
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def __init__(
    self,
    context: TContext,
    usage: Usage | object = _MISSING,
    tool_name: str | object = _MISSING,
    tool_call_id: str | object = _MISSING,
    tool_arguments: str | object = _MISSING,
    tool_call: ResponseFunctionToolCall | None = None,
    *,
    tool_namespace: str | None = None,
    agent: AgentBase[Any] | None = None,
    run_config: RunConfig | None = None,
    turn_input: list[TResponseInputItem] | None = None,
    _approvals: dict[str, _ApprovalRecord] | None = None,
    tool_input: Any | None = None,
) -> None:
    """Preserve the v0.7 positional constructor while accepting new context fields."""
    resolved_usage = Usage() if usage is _MISSING else cast(Usage, usage)
    super().__init__(
        context=context,
        usage=resolved_usage,
        turn_input=list(turn_input or []),
        _approvals={} if _approvals is None else _approvals,
        tool_input=tool_input,
    )
    self.tool_name = (
        _assert_must_pass_tool_name() if tool_name is _MISSING else cast(str, tool_name)
    )
    self.tool_arguments = (
        _assert_must_pass_tool_arguments()
        if tool_arguments is _MISSING
        else cast(str, tool_arguments)
    )
    self.tool_call_id = (
        _assert_must_pass_tool_call_id()
        if tool_call_id is _MISSING
        else cast(str, tool_call_id)
    )
    self.tool_call = tool_call
    self.tool_namespace = (
        tool_namespace
        if isinstance(tool_namespace, str)
        else get_tool_call_namespace(tool_call)
    )
    self.agent = agent
    self.run_config = run_config

from_agent_context classmethod 

from_agent_context(
    context: RunContextWrapper[TContext],
    tool_call_id: str,
    tool_call: ResponseFunctionToolCall | None = None,
    agent: AgentBase[Any] | None = None,
    *,
    tool_namespace: str | None = None,
    run_config: RunConfig | None = None,
) -> ToolContext

Create a ToolContext from a RunContextWrapper.

Source code in src/agents/tool_context.py 
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@classmethod
def from_agent_context(
    cls,
    context: RunContextWrapper[TContext],
    tool_call_id: str,
    tool_call: ResponseFunctionToolCall | None = None,
    agent: AgentBase[Any] | None = None,
    *,
    tool_namespace: str | None = None,
    run_config: RunConfig | None = None,
) -> ToolContext:
    """
    Create a ToolContext from a RunContextWrapper.
    """
    # Grab the names of the RunContextWrapper's init=True fields
    base_values: dict[str, Any] = {
        f.name: getattr(context, f.name) for f in fields(RunContextWrapper) if f.init
    }
    tool_name = tool_call.name if tool_call is not None else _assert_must_pass_tool_name()
    tool_args = (
        tool_call.arguments if tool_call is not None else _assert_must_pass_tool_arguments()
    )
    tool_agent = agent
    if tool_agent is None and isinstance(context, ToolContext):
        tool_agent = context.agent
    tool_run_config = run_config
    if tool_run_config is None and isinstance(context, ToolContext):
        tool_run_config = context.run_config

    tool_context = cls(
        tool_name=tool_name,
        tool_call_id=tool_call_id,
        tool_arguments=tool_args,
        tool_call=tool_call,
        tool_namespace=(
            tool_namespace
            if isinstance(tool_namespace, str)
            else (
                getattr(tool_call, "namespace", None)
                if tool_call is not None
                and isinstance(getattr(tool_call, "namespace", None), str)
                else None
            )
        ),
        agent=tool_agent,
        run_config=tool_run_config,
        **base_values,
    )
    set_agent_tool_state_scope(tool_context, get_agent_tool_state_scope(context))
    return tool_context

is_tool_approved 

is_tool_approved(
    tool_name: str, call_id: str
) -> bool | None

Return True/False/None for the given tool call.

Source code in src/agents/run_context.py 
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def is_tool_approved(self, tool_name: str, call_id: str) -> bool | None:
    """Return True/False/None for the given tool call."""
    return self._get_approval_status_for_key(tool_name, call_id)

approve_tool 

approve_tool(
    approval_item: ToolApprovalItem,
    always_approve: bool = False,
) -> None

Approve a tool call, optionally for all future calls.

Source code in src/agents/run_context.py 
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def approve_tool(self, approval_item: ToolApprovalItem, always_approve: bool = False) -> None:
    """Approve a tool call, optionally for all future calls."""
    self._apply_approval_decision(
        approval_item,
        always=always_approve,
        approve=True,
    )

reject_tool 

reject_tool(
    approval_item: ToolApprovalItem,
    always_reject: bool = False,
) -> None

Reject a tool call, optionally for all future calls.

Source code in src/agents/run_context.py 
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def reject_tool(self, approval_item: ToolApprovalItem, always_reject: bool = False) -> None:
    """Reject a tool call, optionally for all future calls."""
    self._apply_approval_decision(
        approval_item,
        always=always_reject,
        approve=False,
    )

get_approval_status 

get_approval_status(
    tool_name: str,
    call_id: str,
    *,
    tool_namespace: str | None = None,
    existing_pending: ToolApprovalItem | None = None,
    tool_lookup_key: FunctionToolLookupKey | None = None,
) -> bool | None

Return approval status, retrying with pending item's tool name if necessary.

Source code in src/agents/run_context.py 
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def get_approval_status(
    self,
    tool_name: str,
    call_id: str,
    *,
    tool_namespace: str | None = None,
    existing_pending: ToolApprovalItem | None = None,
    tool_lookup_key: FunctionToolLookupKey | None = None,
) -> bool | None:
    """Return approval status, retrying with pending item's tool name if necessary."""
    candidates: list[str] = []
    explicit_namespace = (
        tool_namespace if isinstance(tool_namespace, str) and tool_namespace else None
    )
    pending_namespace = (
        self._resolve_tool_namespace(existing_pending) if existing_pending is not None else None
    )
    pending_key = self._resolve_approval_key(existing_pending) if existing_pending else None
    pending_tool_name = self._resolve_tool_name(existing_pending) if existing_pending else None
    pending_keys = (
        list(self._resolve_approval_keys(existing_pending))
        if existing_pending is not None
        else []
    )

    if existing_pending and pending_key is not None:
        candidates.append(pending_key)
    explicit_keys = (
        list(
            get_function_tool_approval_keys(
                tool_name=tool_name,
                tool_namespace=explicit_namespace,
                tool_lookup_key=tool_lookup_key,
                include_legacy_deferred_key=True,
            )
        )
        if explicit_namespace is not None or tool_lookup_key is not None
        else []
    )
    for explicit_key in explicit_keys:
        if explicit_key not in candidates:
            candidates.append(explicit_key)
    if not explicit_keys and pending_namespace and pending_key is not None:
        if pending_key not in candidates:
            candidates.append(pending_key)
    if (
        explicit_namespace is None
        and tool_lookup_key is None
        and existing_pending is None
        and tool_name not in candidates
    ):
        candidates.append(tool_name)
    if existing_pending:
        for pending_candidate in pending_keys:
            if pending_candidate not in candidates:
                candidates.append(pending_candidate)
        if (
            pending_namespace is None
            and pending_tool_name is not None
            and pending_tool_name not in candidates
        ):
            candidates.append(pending_tool_name)

    status: bool | None = None
    for candidate in candidates:
        status = self._get_approval_status_for_key(candidate, call_id)
        if status is not None:
            break
    return status