ActionAnthropicUpdated May 2026

How do I call a Claude model from a workflow?

Short answer: Drop the "Anthropic → Create Message" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 21 Anthropic actions

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
Model model	options	Required	Which Claude model to use
Message message	string	Required	The user message to send to Claude
System Prompt system	string	Optional	Instructions that shape how Claude responds
Max Tokens max_tokens	string	Required	Maximum number of tokens in the response (required by Anthropic API)
Temperature temperature	string	Optional	Controls randomness (0 = deterministic, 1 = creative). Default is 1.

Sample request

{
  "model": "{{trigger.model}}",
  "message": "e.g. Summarize this document...",
  "system": "e.g. You are a helpful assistant that responds concisely.",
  "max_tokens": "1024",
  "temperature": "e.g. 0.7"
}

Returns

{
  "id": "msg_abc123",
  "role": "assistant",
  "type": "message",
  "model": "claude-sonnet-4-20250514",
  "usage": {
    "input_tokens": 10,
    "output_tokens": 25
  },
  "content": [
    {
      "text": "Hello! How can I help you?",
      "type": "text"
    }
  ],
  "stop_reason": "end_turn"
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Create Message.

Any of these apps can fire this action as part of a workflow.

Google Sheets → Anthropic

2 Google Sheets triggers

HubSpot → Anthropic

18 HubSpot triggers

FAQ

Questions about Create Message.

What does the Create Message action do in Anthropic?

Sends a message to a Claude model and gets a response. The core Anthropic action; supports system prompts, multi-turn conversation, temperature, and stop sequences.

What inputs does Create Message require?

Required: Model, Message, Max Tokens. Every input accepts a static value or a variable from any upstream node in your workflow.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Anthropic returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does Create Message support batch operations?

Yes. Run Create Message inside a Loop node to process arrays. Tiny Command handles Anthropic's rate limits automatically so you don't have to throttle manually.

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