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Thedougler
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openrouter-function-calling

Implement function and tool calling for OpenRouter-compatible large language models.

Updated Feb 16, 2026
Search Tags:#ai agent#tool use#openrouter#llm integration#function calling#api interaction
One-click install
npx skills add https://github.com/Thedougler/agent-template --skill openrouter-function-calling
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: openrouter-function-calling
Source: https://github.com/Thedougler/agent-template/tree/main/.github/skills/openrouter-function-calling
Command: npx skills add https://github.com/Thedougler/agent-template --skill openrouter-function-calling

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill enables developers to integrate advanced function and tool-calling capabilities with OpenRouter-supported AI models, streamlining complex AI-driven workflows.

Core Features & Use Cases

  • Function Calling Implementation: Demonstrates how to define and utilize functions as tools for AI models.
  • Tool Use Patterns: Covers basic and advanced scenarios, including multiple tools, forced tool use, and parallel execution.
  • Use Case: Building an AI assistant that can interact with external APIs (e.g., weather, calendar, databases) by having the AI intelligently decide which function to call based on user requests.

Quick Start

Use the openrouter-function-calling skill to implement tool use with OpenRouter models by following the instructions in the SKILL.md file.

Frequently Asked Questions about openrouter-function-calling

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

FAQPage Schema
How do I implement function calling with OpenRouter models?▼

To implement function calling with OpenRouter, define your functions as tools and pass them to a compatible model. The AI intelligently decides which function to invoke based on user requests and defined tool schemas.

Can I use OpenRouter API interaction to let an AI agent call external APIs?▼

Yes, OpenRouter API interaction enables an AI agent to call external APIs. The AI evaluates user requests and triggers function invocations for external services like weather, calendars, or databases.

What is AI tool use and how does it work with structured data generation?▼

AI tool use allows models to execute defined functions, facilitating structured data generation. The AI selects appropriate tools based on schemas, returning structured outputs for seamless application integration.

Do I need specific LLM integration models for OpenRouter function calling?▼

Yes, OpenRouter function calling requires specific LLM integration models that natively support tool use. You must select compatible models and adhere to defined tool schemas for seamless execution.

Does OpenRouter tool use support parallel execution and forced tool calling?▼

OpenRouter tool use supports both parallel execution and forced tool calling. These advanced patterns allow multiple simultaneous function invocations and mandatory tool selection during AI workflows.

What are the limitations of AI agent function calling with OpenRouter?▼

AI agent function calling with OpenRouter is limited by model compatibility and strict schema adherence. If a selected model lacks native tool use support, structured data generation and API interaction will fail.

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