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tool-use-patterns

Coordinate Claude tool calls across sequential, parallel workflows with robust error handling.

88|108|Updated Apr 7, 2026
Search Tags:#error handling#claude#parallel execution#tool use#function calling#agentic loop#tool_result
One-click install
npx skills add https://github.com/grandamenium/cortextos --skill tool-use-patterns-grandamenium
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: tool-use-patterns
Source: https://github.com/grandamenium/cortextos/tree/main/skills/tool-use-patterns
Command: npx skills add https://github.com/grandamenium/cortextos --skill tool-use-patterns-grandamenium

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Tool-using agents can fail or behave unpredictably when they need to call tools sequentially, run multiple tools in parallel, recover from tool errors, or continue an agentic loop until completion.

Core Features & Use Cases

  • Agentic loop control: Repeatedly call Claude with tool definitions until the model signals it’s done, then apply tool results back into the conversation.
  • Robust error handling: Return tool results marked with an error flag so the agent can gracefully adapt when a tool fails (e.g., missing file, invalid input).
  • Parallel tool execution: Enable the model to request multiple tools in a single turn and execute them concurrently, returning all tool outputs together.
  • Best-practice tool specs: Keep tool descriptions concise, encode parameter constraints in the schema, and prefer structured tool outputs for reliable downstream reasoning.

Quick Start

Instruct your agent to “Plan a tool-assisted task using these tool-use patterns, run any requested tools (including parallel calls), and continue the agentic loop until you reach an end_turn response.”

Frequently Asked Questions about tool-use-patterns

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

FAQPage Schema
How do I handle tool errors in a Claude agentic loop?▼

Implement parallel tool execution by allowing the model to request multiple tools in a single turn. You execute these tool calls concurrently and return all structured tool outputs together in one tool_result payload for the next model turn.

What is an agentic loop for multi-tool workflows?▼

An agentic loop for multi-tool workflows repeatedly calls Claude with tool definitions until the model signals completion. You apply tool results back into the conversation to drive sequential, parallel, or iterative task execution autonomously.

How do I design tool schemas for reliable function calling?▼

Design tool schemas for reliable function calling by keeping descriptions concise and encoding parameter constraints directly in the schema. Prefer structured tool outputs to ensure dependable downstream reasoning by the model.

Why does my Claude tool use workflow stop unexpectedly?▼

Claude tool use workflows stop unexpectedly if tool_result payloads are not fed back into subsequent model turns. You must implement proper tool_use handling and continue the agentic loop until an end_turn response is reached.

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