--- title: "List input items" method: GET path: "/responses/{response_id}/input_items" tags: ["Responses"] --- # List input items `GET /responses/{response_id}/input_items` Returns a list of input items for a given response. ## Path parameters - `response_id` string, required ## Query parameters - `limit` integer - `order` 'asc' | 'desc' - `after` string - `include` IncludeEnum[] ## Response `200` OK - ResponseItemList — A list of Response items. - `object` 'list', required — The type of object returned, must be `list`. - `data` ItemResource[], required — A list of items used to generate this response. - union — Content item used to generate a response. - InputMessageResource — A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `type` 'message', required — The type of the message input. Always set to `message`. - `role` 'user' | 'system' | 'developer', required — The role of the message input. One of `user`, `system`, or `developer`. - `status` 'in_progress' | 'completed' | 'incomplete' — The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `content` InputContent[], required — A list of one or many input items to the model, containing different content types. - union - InputTextContent — A text input to the model. - … - InputImageContent — An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision). - … - InputFileContent — A file input to the model. - … - `id` string, required — The unique ID of the message input. - OutputMessage — An output message from the model. - `id` string, required — The unique ID of the output message. - `type` 'message', required — The type of the output message. Always `message`. - `role` 'assistant', required — The role of the output message. Always `assistant`. - `content` OutputMessageContent[], required — The content of the output message. - union - OutputTextContent — A text output from the model. - … - RefusalContent — A refusal from the model. - … - `phase` 'commentary' | 'final_answer' — Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `status` 'in_progress' | 'completed' | 'incomplete', required — The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - FileSearchToolCall — The results of a file search tool call. See the [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information. - `id` string, required — The unique ID of the file search tool call. - `type` 'file_search_call', required — The type of the file search tool call. Always `file_search_call`. - `status` 'in_progress' | 'searching' | 'completed' | 'incomplete' | 'failed', required — The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `queries` string[], required — The queries used to search for files. - `results` object[], nullable — The results of the file search tool call. - `file_id` string — The unique ID of the file. - `text` string — The text that was retrieved from the file. - `filename` string — The name of the file. - `attributes` VectorStoreFileAttributes, nullable — Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `score` number, float — The relevance score of the file - a value between 0 and 1. - ComputerToolCall — A tool call to a computer use tool. See the [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information. - `type` 'computer_call', required — The type of the computer call. Always `computer_call`. - `id` string, required — The unique ID of the computer call. - `call_id` string, required — An identifier used when responding to the tool call with output. - `action` union - ClickParam — A click action. - `type` 'click', required — Specifies the event type. For a click action, this property is always `click`. - `button` 'left' | 'right' | 'wheel' | 'back' | 'forward', required - `x` integer, required — The x-coordinate where the click occurred. - `y` integer, required — The y-coordinate where the click occurred. - `keys` string[], nullable — The keys being held while clicking. - DoubleClickAction — A double click action. - `type` 'double_click', required — Specifies the event type. For a double click action, this property is always set to `double_click`. - `x` integer, required — The x-coordinate where the double click occurred. - `y` integer, required — The y-coordinate where the double click occurred. - `keys` string[], nullable, required — The keys being held while double-clicking. - DragParam — A drag action. - `type` 'drag', required — Specifies the event type. For a drag action, this property is always set to `drag`. - `path` CoordParam[], required — An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - … - `keys` string[], nullable — The keys being held while dragging the mouse. - KeyPressAction — A collection of keypresses the model would like to perform. - `type` 'keypress', required — Specifies the event type. For a keypress action, this property is always set to `keypress`. - `keys` string[], required — The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - MoveParam — A mouse move action. - `type` 'move', required — Specifies the event type. For a move action, this property is always set to `move`. - `x` integer, required — The x-coordinate to move to. - `y` integer, required — The y-coordinate to move to. - `keys` string[], nullable — The keys being held while moving the mouse. - ScreenshotParam — A screenshot action. - `type` 'screenshot', required — Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - ScrollParam — A scroll action. - `type` 'scroll', required — Specifies the event type. For a scroll action, this property is always set to `scroll`. - `x` integer, required — The x-coordinate where the scroll occurred. - `y` integer, required — The y-coordinate where the scroll occurred. - `scroll_x` integer, required — The horizontal scroll distance. - `scroll_y` integer, required — The vertical scroll distance. - `keys` string[], nullable — The keys being held while scrolling. - TypeParam — An action to type in text. - `type` 'type', required — Specifies the event type. For a type action, this property is always set to `type`. - `text` string, required — The text to type. - WaitParam — A wait action. - `type` 'wait', required — Specifies the event type. For a wait action, this property is always set to `wait`. - `actions` ComputerAction[] — Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - union - ClickParam — A click action. - … - DoubleClickAction — A double click action. - … - DragParam — A drag action. - … - KeyPressAction — A collection of keypresses the model would like to perform. - … - MoveParam — A mouse move action. - … - ScreenshotParam — A screenshot action. - … - ScrollParam — A scroll action. - … - TypeParam — An action to type in text. - … - WaitParam — A wait action. - … - `pending_safety_checks` ComputerCallSafetyCheckParam[], required — The pending safety checks for the computer call. - `id` string, required — The ID of the pending safety check. - `code` string, nullable — The type of the pending safety check. - `message` string, nullable — Details about the pending safety check. - `status` 'in_progress' | 'completed' | 'incomplete', required — The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - ComputerToolCallOutputResource — The output of a computer tool call. - `type` 'computer_call_output', required — The type of the computer tool call output. Always `computer_call_output`. - `id` string, required — The unique ID of the computer call tool output. - `call_id` string, required — The ID of the computer tool call that produced the output. - `acknowledged_safety_checks` ComputerCallSafetyCheckParam[] — The safety checks reported by the API that have been acknowledged by the developer. - `id` string, required — The ID of the pending safety check. - `code` string, nullable — The type of the pending safety check. - `message` string, nullable — Details about the pending safety check. - `output` ComputerScreenshotImage, required — A computer screenshot image used with the computer use tool. - `type` 'computer_screenshot', required — Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `image_url` string, uri — The URL of the screenshot image. - `file_id` string — The identifier of an uploaded file that contains the screenshot. - `status` 'completed' | 'incomplete', required — The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `created_by` string — The identifier of the actor that created the item. - WebSearchToolCall — The results of a web search tool call. See the [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information. - `id` string, required — The unique ID of the web search tool call. - `type` 'web_search_call', required — The type of the web search tool call. Always `web_search_call`. - `status` 'in_progress' | 'searching' | 'completed' | 'failed', required — The status of the web search tool call. - `action` union, required — An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - object — Action type "search" - Performs a web search query. - `type` 'search', required — The action type. - `query` string — The search query. - `queries` string[] — The search queries. - `sources` object[] — The sources used in the search. - … - object — Action type "open_page" - Opens a specific URL from search results. - `type` 'open_page', required — The action type. - `url` string, uri, nullable — The URL opened by the model. - object — Action type "find_in_page": Searches for a pattern within a loaded page. - `type` 'find_in_page', required — The action type. - `url` string, uri, required — The URL of the page searched for the pattern. - `pattern` string, required — The pattern or text to search for within the page. - FunctionToolCallResource — A tool call to run a function. See the [function calling guide](https://platform.openai.com/docs/guides/function-calling) for more information. - `id` string, required — The unique ID of the function tool call. - `type` 'function_call', required — The type of the function tool call. Always `function_call`. - `call_id` string, required — The unique ID of the function tool call generated by the model. - `caller` union — The execution context that produced this tool call. - DirectToolCallCaller - `type` 'direct', required - ProgramToolCallCaller - `type` 'program', required - `caller_id` string, required — The call ID of the program item that produced this tool call. - `namespace` string — The namespace of the function to run. - `name` string, required — The name of the function to run. - `arguments` string, required — A JSON string of the arguments to pass to the function. - `status` 'in_progress' | 'completed' | 'incomplete', required — The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `created_by` string — The identifier of the actor that created the item. - FunctionToolCallOutputResource — The output of a function tool call. - `id` string, required — The unique ID of the function call tool output. - `type` 'function_call_output', required — The type of the function tool call output. Always `function_call_output`. - `call_id` string, required — The unique ID of the function tool call generated by the model. - `caller` union — The execution context that produced this tool call. - DirectToolCallCallerParam - `type` 'direct', required — The caller type. Always `direct`. - ProgramToolCallCallerParam - `type` 'program', required — The caller type. Always `program`. - `caller_id` string, required — The call ID of the program item that produced this tool call. - `output` union, required — The output from the function call generated by your code. Can be a string or an list of output content. - string — A string of the output of the function call. - FunctionAndCustomToolCallOutput[] — Text, image, or file output of the function call. - union - … - `status` 'in_progress' | 'completed' | 'incomplete', required — The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `created_by` string — The identifier of the actor that created the item. - ToolSearchCall - `type` 'tool_search_call', required — The type of the item. Always `tool_search_call`. - `id` string, required — The unique ID of the tool search call item. - `call_id` string, nullable, required — The unique ID of the tool search call generated by the model. - `execution` 'server' | 'client', required - `arguments` unknown, required - `status` 'in_progress' | 'completed' | 'incomplete', required - `created_by` string — The identifier of the actor that created the item. - ToolSearchOutput - `type` 'tool_search_output', required — The type of the item. Always `tool_search_output`. - `id` string, required — The unique ID of the tool search output item. - `call_id` string, nullable, required — The unique ID of the tool search call generated by the model. - `execution` 'server' | 'client', required - `tools` Tool[], required — The loaded tool definitions returned by tool search. - union — A tool that can be used to generate a response. - FunctionTool — Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - … - FileSearchTool — A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - … - ComputerTool — A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - … - ComputerUsePreviewTool — A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - … - WebSearchTool — Search the Internet for sources related to the prompt. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - … - MCPTool — Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp). - … - CodeInterpreterTool — A tool that runs Python code to help generate a response to a prompt. - … - ProgrammaticToolCallingParam - … - ImageGenTool — A tool that generates images using the GPT image models. - … - LocalShellToolParam — A tool that allows the model to execute shell commands in a local environment. - … - FunctionShellToolParam — A tool that allows the model to execute shell commands. - … - CustomToolParam — A custom tool that processes input using a specified format. Learn more about [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools) - … - NamespaceToolParam — Groups function/custom tools under a shared namespace. - … - ToolSearchToolParam — Hosted or BYOT tool search configuration for deferred tools. - … - WebSearchPreviewTool — This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - … - ApplyPatchToolParam — Allows the assistant to create, delete, or update files using unified diffs. - … - `status` 'in_progress' | 'completed' | 'incomplete', required - `created_by` string — The identifier of the actor that created the item. - AdditionalTools - `type` 'additional_tools', required — The type of the item. Always `additional_tools`. - `id` string, required — The unique ID of the additional tools item. - `role` 'unknown' | 'user' | 'assistant' | 'system' | 'critic' | 'discriminator' | 'developer' | 'tool', required - `tools` Tool[], required — The additional tool definitions made available at this item. - union — A tool that can be used to generate a response. - FunctionTool — Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - … - FileSearchTool — A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - … - ComputerTool — A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - … - ComputerUsePreviewTool — A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - … - WebSearchTool — Search the Internet for sources related to the prompt. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - … - MCPTool — Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp). - … - CodeInterpreterTool — A tool that runs Python code to help generate a response to a prompt. - … - ProgrammaticToolCallingParam - … - ImageGenTool — A tool that generates images using the GPT image models. - … - LocalShellToolParam — A tool that allows the model to execute shell commands in a local environment. - … - FunctionShellToolParam — A tool that allows the model to execute shell commands. - … - CustomToolParam — A custom tool that processes input using a specified format. Learn more about [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools) - … - NamespaceToolParam — Groups function/custom tools under a shared namespace. - … - ToolSearchToolParam — Hosted or BYOT tool search configuration for deferred tools. - … - WebSearchPreviewTool — This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - … - ApplyPatchToolParam — Allows the assistant to create, delete, or update files using unified diffs. - … - ReasoningItem — A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](https://platform.openai.com/docs/guides/conversation-state). - `type` 'reasoning', required — The type of the object. Always `reasoning`. - `id` string, required — The unique identifier of the reasoning content. - `encrypted_content` string, nullable — The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. - `summary` Summary[], required — Reasoning summary content. - `type` 'summary_text', required — The type of the object. Always `summary_text`. - `text` string, required — A summary of the reasoning output from the model so far. - `content` ReasoningTextContent[] — Reasoning text content. - `type` 'reasoning_text', required — The type of the reasoning text. Always `reasoning_text`. - `text` string, required — The reasoning text from the model. - `status` 'in_progress' | 'completed' | 'incomplete' — The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - Program - `type` 'program', required — The type of the item. Always `program`. - `id` string, required — The unique ID of the program item. - `call_id` string, required — The stable call ID of the program item. - `code` string, required — The JavaScript source executed by programmatic tool calling. - `fingerprint` string, required — Opaque program replay fingerprint that must be round-tripped. - ProgramOutput - `type` 'program_output', required — The type of the item. Always `program_output`. - `id` string, required — The unique ID of the program output item. - `call_id` string, required — The call ID of the program item. - `result` string, required — The result produced by the program item. - `status` 'completed' | 'incomplete', required - CompactionBody — A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact). - `type` 'compaction', required — The type of the item. Always `compaction`. - `id` string, required — The unique ID of the compaction item. - `encrypted_content` string, required — The encrypted content that was produced by compaction. - `created_by` string — The identifier of the actor that created the item. - ImageGenToolCall — An image generation request made by the model. - `type` 'image_generation_call', required — The type of the image generation call. Always `image_generation_call`. - `id` string, required — The unique ID of the image generation call. - `status` 'in_progress' | 'completed' | 'generating' | 'failed', required — The status of the image generation call. - `result` string, nullable, required — The generated image encoded in base64. - CodeInterpreterToolCall — A tool call to run code. - `type` 'code_interpreter_call', required — The type of the code interpreter tool call. Always `code_interpreter_call`. - `id` string, required — The unique ID of the code interpreter tool call. - `status` 'in_progress' | 'completed' | 'incomplete' | 'interpreting' | 'failed', required — The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `container_id` string, required — The ID of the container used to run the code. - `code` string, nullable, required — The code to run, or null if not available. - `outputs` union[], nullable, required — The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - union - CodeInterpreterOutputLogs — The logs output from the code interpreter. - … - CodeInterpreterOutputImage — The image output from the code interpreter. - … - LocalShellToolCall — A tool call to run a command on the local shell. - `type` 'local_shell_call', required — The type of the local shell call. Always `local_shell_call`. - `id` string, required — The unique ID of the local shell call. - `call_id` string, required — The unique ID of the local shell tool call generated by the model. - `action` LocalShellExecAction, required — Execute a shell command on the server. - `type` 'exec', required — The type of the local shell action. Always `exec`. - `command` string[], required — The command to run. - `timeout_ms` integer, nullable — Optional timeout in milliseconds for the command. - `working_directory` string, nullable — Optional working directory to run the command in. - `env` object, required — Environment variables to set for the command. - `user` string, nullable — Optional user to run the command as. - `status` 'in_progress' | 'completed' | 'incomplete', required — The status of the local shell call. - LocalShellToolCallOutput — The output of a local shell tool call. - `type` 'local_shell_call_output', required — The type of the local shell tool call output. Always `local_shell_call_output`. - `id` string, required — The unique ID of the local shell tool call generated by the model. - `output` string, required — A JSON string of the output of the local shell tool call. - `status` 'in_progress' | 'completed' | 'incomplete', nullable — The status of the item. One of `in_progress`, `completed`, or `incomplete`. - FunctionShellCall — A tool call that executes one or more shell commands in a managed environment. - `type` 'shell_call', required — The type of the item. Always `shell_call`. - `id` string, required — The unique ID of the shell tool call. Populated when this item is returned via API. - `call_id` string, required — The unique ID of the shell tool call generated by the model. - `caller` union — The execution context that produced this tool call. - DirectToolCallCaller - `type` 'direct', required - ProgramToolCallCaller - `type` 'program', required - `caller_id` string, required — The call ID of the program item that produced this tool call. - `action` FunctionShellAction, required — Execute a shell command. - `commands` string[], required - `timeout_ms` integer, nullable, required — Optional timeout in milliseconds for the commands. - `max_output_length` integer, nullable, required — Optional maximum number of characters to return from each command. - `status` 'in_progress' | 'completed' | 'incomplete', required - `environment` union, required - LocalEnvironmentResource — Represents the use of a local environment to perform shell actions. - `type` 'local', required — The environment type. Always `local`. - ContainerReferenceResource — Represents a container created with /v1/containers. - `type` 'container_reference', required — The environment type. Always `container_reference`. - `container_id` string, required - `created_by` string — The ID of the entity that created this tool call. - FunctionShellCallOutput — The output of a shell tool call that was emitted. - `type` 'shell_call_output', required — The type of the shell call output. Always `shell_call_output`. - `id` string, required — The unique ID of the shell call output. Populated when this item is returned via API. - `call_id` string, required — The unique ID of the shell tool call generated by the model. - `caller` union — The execution context that produced this tool call. - DirectToolCallCaller - `type` 'direct', required - ProgramToolCallCaller - `type` 'program', required - `caller_id` string, required — The call ID of the program item that produced this tool call. - `status` 'in_progress' | 'completed' | 'incomplete', required - `output` FunctionShellCallOutputContent[], required — An array of shell call output contents - `stdout` string, required — The standard output that was captured. - `stderr` string, required — The standard error output that was captured. - `outcome` union, required — Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - FunctionShellCallOutputTimeoutOutcome — Indicates that the shell call exceeded its configured time limit. - … - FunctionShellCallOutputExitOutcome — Indicates that the shell commands finished and returned an exit code. - … - `created_by` string — The identifier of the actor that created the item. - `max_output_length` integer, nullable, required — The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `created_by` string — The identifier of the actor that created the item. - ApplyPatchToolCall — A tool call that applies file diffs by creating, deleting, or updating files. - `type` 'apply_patch_call', required — The type of the item. Always `apply_patch_call`. - `id` string, required — The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id` string, required — The unique ID of the apply patch tool call generated by the model. - `caller` union — The execution context that produced this tool call. - DirectToolCallCaller - `type` 'direct', required - ProgramToolCallCaller - `type` 'program', required - `caller_id` string, required — The call ID of the program item that produced this tool call. - `status` 'in_progress' | 'completed', required - `operation` union, required — One of the create_file, delete_file, or update_file operations applied via apply_patch. - ApplyPatchCreateFileOperation — Instruction describing how to create a file via the apply_patch tool. - `type` 'create_file', required — Create a new file with the provided diff. - `path` string, required — Path of the file to create. - `diff` string, required — Diff to apply. - ApplyPatchDeleteFileOperation — Instruction describing how to delete a file via the apply_patch tool. - `type` 'delete_file', required — Delete the specified file. - `path` string, required — Path of the file to delete. - ApplyPatchUpdateFileOperation — Instruction describing how to update a file via the apply_patch tool. - `type` 'update_file', required — Update an existing file with the provided diff. - `path` string, required — Path of the file to update. - `diff` string, required — Diff to apply. - `created_by` string — The ID of the entity that created this tool call. - ApplyPatchToolCallOutput — The output emitted by an apply patch tool call. - `type` 'apply_patch_call_output', required — The type of the item. Always `apply_patch_call_output`. - `id` string, required — The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id` string, required — The unique ID of the apply patch tool call generated by the model. - `caller` union — The execution context that produced this tool call. - DirectToolCallCaller - `type` 'direct', required - ProgramToolCallCaller - `type` 'program', required - `caller_id` string, required — The call ID of the program item that produced this tool call. - `status` 'completed' | 'failed', required - `output` string, nullable — Optional textual output returned by the apply patch tool. - `created_by` string — The ID of the entity that created this tool call output. - MCPListTools — A list of tools available on an MCP server. - `type` 'mcp_list_tools', required — The type of the item. Always `mcp_list_tools`. - `id` string, required — The unique ID of the list. - `server_label` string, required — The label of the MCP server. - `tools` MCPListToolsTool[], required — The tools available on the server. - `name` string, required — The name of the tool. - `description` string, nullable — The description of the tool. - `input_schema` object, required — The JSON schema describing the tool's input. - `annotations` object, nullable — Additional annotations about the tool. - `error` string, nullable — Error message if the server could not list tools. - MCPApprovalRequest — A request for human approval of a tool invocation. - `type` 'mcp_approval_request', required — The type of the item. Always `mcp_approval_request`. - `id` string, required — The unique ID of the approval request. - `server_label` string, required — The label of the MCP server making the request. - `name` string, required — The name of the tool to run. - `arguments` string, required — A JSON string of arguments for the tool. - MCPApprovalResponseResource — A response to an MCP approval request. - `type` 'mcp_approval_response', required — The type of the item. Always `mcp_approval_response`. - `id` string, required — The unique ID of the approval response - `approval_request_id` string, required — The ID of the approval request being answered. - `approve` boolean, required — Whether the request was approved. - `reason` string, nullable — Optional reason for the decision. - MCPToolCall — An invocation of a tool on an MCP server. - `type` 'mcp_call', required — The type of the item. Always `mcp_call`. - `id` string, required — The unique ID of the tool call. - `server_label` string, required — The label of the MCP server running the tool. - `name` string, required — The name of the tool that was run. - `arguments` string, required — A JSON string of the arguments passed to the tool. - `output` string, nullable — The output from the tool call. - `error` string, nullable — The error from the tool call, if any. - `status` 'in_progress' | 'completed' | 'incomplete' | 'calling' | 'failed' - `approval_request_id` string, nullable — Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - CustomToolCallResource — A call to a custom tool created by the model. - `type` 'custom_tool_call', required — The type of the custom tool call. Always `custom_tool_call`. - `id` string, required — The unique ID of the custom tool call item. - `call_id` string, required — An identifier used to map this custom tool call to a tool call output. - `caller` union — The execution context that produced this tool call. - DirectToolCallCaller - `type` 'direct', required - ProgramToolCallCaller - `type` 'program', required - `caller_id` string, required — The call ID of the program item that produced this tool call. - `namespace` string — The namespace of the custom tool being called. - `name` string, required — The name of the custom tool being called. - `input` string, required — The input for the custom tool call generated by the model. - `status` 'in_progress' | 'completed' | 'incomplete', required - `created_by` string — The identifier of the actor that created the item. - CustomToolCallOutputResource — The output of a custom tool call from your code, being sent back to the model. - `type` 'custom_tool_call_output', required — The type of the custom tool call output. Always `custom_tool_call_output`. - `id` string, required — The unique ID of the custom tool call output item. - `call_id` string, required — The call ID, used to map this custom tool call output to a custom tool call. - `caller` union — The execution context that produced this tool call. - DirectToolCallCallerParam - `type` 'direct', required — The caller type. Always `direct`. - ProgramToolCallCallerParam - `type` 'program', required — The caller type. Always `program`. - `caller_id` string, required — The call ID of the program item that produced this tool call. - `output` union, required — The output from the custom tool call generated by your code. Can be a string or an list of output content. - string — A string of the output of the custom tool call. - FunctionAndCustomToolCallOutput[] — Text, image, or file output of the custom tool call. - union - … - `status` 'in_progress' | 'completed' | 'incomplete', required - `created_by` string — The identifier of the actor that created the item. - `has_more` boolean, required — Whether there are more items available. - `first_id` string, required — The ID of the first item in the list. - `last_id` string, required — The ID of the last item in the list. --- [API](https://skmtc.net/openai/apis/openai-api.md) · [All operations](https://skmtc.net/openai/apis/openai-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/openai/openai-api/versions/dcd35773a322/schema)