CustomToolCallItem Type | OpenRouter TypeScript SDK | OpenRouter

The TypeScript SDK and docs are currently in beta. Report issues on GitHub.

A call to a custom (freeform-grammar) tool created by the model — distinct from function_call. Used for tools like Codex CLI’s apply_patch whose payload is opaque text rather than JSON arguments.

Example Usage

1 import { CustomToolCallItem } from "@openrouter/sdk/models";
2 
3 let value: CustomToolCallItem = {
4   callId: "call-abc123",
5   input: "*** Begin Patch\n*** End Patch",
6   name: "apply_patch",
7   type: "custom_tool_call",
8 };

Fields

Field	Type	Required	Description
`callId`	string	✔️	N/A
`id`	string	➖	N/A
`input`	string	✔️	N/A
`name`	string	✔️	N/A
`namespace`	string	➖	Namespace qualifier for tools registered as part of a namespace tool group (e.g. an MCP server)
`type`	models.CustomToolCallItemType	✔️	N/A