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POST
Create a Claude Messages response

Authorizations

Authorization
string
header
required

API key (sk-xxx)

Headers

anthropic-version
string
required

Anthropic API version

Example:

"2023-06-01"

x-api-key
string

Anthropic API key. Optional; you can also use a Bearer token.

Body

application/json
model
string
required
Example:

"claude-3-opus-20240229"

messages
object[]
required
max_tokens
integer
required
Required range: x >= 1
system
cache_control
object
inference_geo
string
temperature
number
Required range: 0 <= x <= 1
top_p
number
top_k
integer
stream
boolean
stop_sequences
string[]
tools
object[]
tool_choice
object
thinking
object
context_management
object
output_config
object
output_format
object
container
mcp_servers
object[]
metadata
object
speed
enum<string>
Available options:
standard,
fast
service_tier
enum<string>
Available options:
auto,
standard_only

Response

200 - application/json

Response created successfully

id
string
type
string
Example:

"message"

role
string
Example:

"assistant"

content
object[]
model
string
stop_reason
enum<string>
Available options:
end_turn,
max_tokens,
stop_sequence,
tool_use
usage
object