Anthropic-compatible Messages endpoint at /v1/messages.
/v1/messages to send Anthropic Messages API payloads through the gateway. The gateway normalizes your request into its internal IR, routes it to a compatible provider surface, and emits Anthropic-formatted responses.
stream: true to receive server-sent events in Anthropic format (message_start, content_block_*, message_delta, message_stop).
X-AIStats-Strictness header controls how unsupported parameters are handled.Bearer token authentication
1x >= 10 <= x <= 20 <= x <= 1x >= 1Gateway debug controls. These flags are never forwarded upstream.
Provider routing preferences for gateway selection.