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- [Messages](/docs/ai-gateway/sdks-and-apis/anthropic-messages-api/messages.md): Create messages using the Anthropic Messages API format. Endpoint POST /v1/messages Basic message Create a nonstreaming message. Example request
- [Atleastonce delivery](/docs/queues/concepts.md): Vercel Queues provides atleastonce delivery semantics. Every accepted message is delivered to each consumer group at least one time. In most cases, a
- [Tool Calls](/docs/ai-gateway/sdks-and-apis/anthropic-messages-api/tool-calling.md): The Anthropic Messages API supports function calling, allowing models to call tools and functions. Example request cURLTypeScriptPython toolcalls.sh
- [Fast Mode](/docs/ai-gateway/models-and-providers/fast-mode.md): = anthropic.Anthropic( api_key=os.getenv("AI_GATEWAY_API_KEY"), base_url="https//aigateway.vercel.sh", ) message = client.messages.create(
- [Message format](/docs/ai-gateway/sdks-and-apis/openai-chat-completions/chat-completions.md): Messages support different content typesText messages { "role""user", "content""Hello, how are you?" } Multimodal messages { "role""user", "content"[

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