These are request fields that affect model/runtime behavior but are not prompt text blocks.
{
"model": "claude-opus-4-8",
"max_tokens": 64000,
"thinking": {
"type": "adaptive"
},
"context_management": {
"edits": [
{
"type": "clear_thinking_20251015",
"keep": "all"
}
]
},
"output_config": {
"effort": "high"
},
"stream": true,
"metadata": {
"user_id": "{\"device_id\":\"b42919dc2f35505e77a6beb07ee5d44b2f1047e6e5e905ebd7b198e6bd56a116\",\"account_uuid\":\"\",\"session_id\":\"fe79bd85-e0f6-4811-b886-8af6dc007e6d\"}"
}
}