NVIDIA NIM kimik2.5 returns numeric tool call IDs causing 'expected id to be a string' error

[JoshCLWren]

Describe the bug

When using NVIDIA NIM kimik2.5 model with tool calls, the provider returns tool call IDs as numeric values instead of strings, causing Zod validation errors: expected id to be a string

To Reproduce

1. Configure NVIDIA NIM kimik2.5 as provider
2. Attempt a tool call (e.g., read, write, etc.)
3. Observe validation error in logs

Expected behavior

Tool calls should work seamlessly with NVIDIA NIM kimik2.5, automatically converting numeric IDs to strings.

Root Cause

NVIDIA NIM kimik2.5 returns tool call IDs as numbers (e.g., 123) instead of strings (e.g., "123"), violating OpenAI API specification which requires string IDs.

Environment

• Provider: NVIDIA NIM
• Model: kimik2.5
• OpenCode version: latest