header when making requests to protected resources.
Example:
Authorization: Bearer ********************
Header Params
Body Params application/json
Example
{"model":"claude-sonnet-4-5-20250929","max_tokens":1024,"messages":[{"role":"user","content":"Extract the key information from this email: John Smith (john@example.com) is interested in our Enterprise plan and wants to schedule a demo for next Tuesday at 2pm."}],"output_format":{"type":"json_schema","schema":{"type":"object","properties":{"name":{"type":"string"},"email":{"type":"string"},"plan_interest":{"type":"string"},"demo_requested":{"type":"boolean"}},"required":["name","email","plan_interest","demo_requested"],"additionalProperties":false}}}
Request Code Samples
Shell
JavaScript
Java
Swift
Go
PHP
Python
HTTP
C
C#
Objective-C
Ruby
OCaml
Dart
R
Request Request Example
Shell
JavaScript
Java
Swift
curl--location'/v1/messages' \
--header'Accept: application/json' \
--header'anthropic-beta: structured-outputs-2025-11-13' \
--header'Authorization: Bearer <token>' \
--header'Content-Type: application/json' \
--data-raw'{
"model": "claude-sonnet-4-5-20250929",
"max_tokens": 1024,
"messages": [
{
"role": "user",
"content": "Extract the key information from this email: John Smith (john@example.com) is interested in our Enterprise plan and wants to schedule a demo for next Tuesday at 2pm."
}
],
"output_format": {
"type": "json_schema",
"schema": {
"type": "object",
"properties": {
"name": {"type": "string"},
"email": {"type": "string"},
"plan_interest": {"type": "string"},
"demo_requested": {"type": "boolean"}
},
"required": ["name", "email", "plan_interest", "demo_requested"],
"additionalProperties": false
}
}
}'
Responses
🟢200OK
application/json
Bodyapplication/json
Example
{"id":"chatcmpl-123","object":"chat.completion","created":1677652288,"choices":[{"index":0,"message":{"role":"assistant","content":"\n\nHello there, how may I assist you today?"},"finish_reason":"stop"}],"usage":{"prompt_tokens":9,"completion_tokens":12,"total_tokens":21}}