tool-use-structured-output

Enforce structured outputs from Claude models using Bedrock's tool_use feature.

392|152|Updated Jul 9, 2025
One-click install
npx skills add https://github.com/aws-solutions-library-samples/guidance-for-claude-code-with-amazon-bedrock --skill tool-use-structured-output
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: tool-use-structured-output
Source: https://github.com/aws-solutions-library-samples/guidance-for-claude-code-with-amazon-bedrock/tree/main/assets/claude-code-plugins/plugins/bedrock/skills/tool-use-structured-output
Command: npx skills add https://github.com/aws-solutions-library-samples/guidance-for-claude-code-with-amazon-bedrock --skill tool-use-structured-output

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill enables reliable enforcement of structured outputs from Claude models by leveraging Bedrock's tool_use feature.

Core Features & Use Cases

  • Define tool schemas to force structured outputs that align with your application data models.
  • Invoke Bedrock with tool_choice to guarantee tool use and avoid JSON parsing issues.
  • Validate and parse the tool_use input on receipt to produce deterministic downstream processing.

Quick Start

Use the tool_use capability to enforce a fixed JSON schema when processing a Claude response.

Frequently Asked Questions about tool-use-structured-output

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I force Claude to return structured JSON outputs using Bedrock?

To force structured JSON outputs from Claude, define a tool schema and invoke Bedrock with a tool_choice parameter that guarantees tool usage, ensuring deterministic parsing for downstream processing.

Why does Claude fail to parse JSON schemas in multi-turn prompts?

Claude may fail JSON parsing in multi-turn prompts due to varying input content. Leveraging Bedrock's tool_use feature enforces strict output schemas, avoiding common JSON parsing issues across conversations.

What is the best way to enforce a strict JSON schema with Claude models?

The best way to enforce a strict JSON schema with Claude models is using Bedrock's tool_use feature with a defined tool_choice, which guarantees tool invocation and produces deterministic structured input.

Can I use Bedrock tool_use to enforce structured outputs across varying input content?

Yes, you can use Bedrock tool_use to enforce structured outputs across varying input content. It applies to AI tasks requiring strict output schemas throughout multi-turn prompts, ensuring reliable parsing.

How do I validate tool_use input from Claude for downstream processing?

To validate tool_use input from Claude, parse the structured input received from the Bedrock tool_use response upon receipt, producing deterministic data that aligns with your application data models.