---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/ad-library-search/use-cases/find-successful-ad-formats
---
# Find Successful Ad Formats

Not all ad formats perform equally. Carousel ads, video ads, single-image ads, and collection ads each have different strengths depending on your product and audience. By studying what formats successful advertisers in your space use most heavily, you can prioritize the formats most likely to work for you.

ToolRouter's Ad Library Search lets you search Facebook ads by keyword and then drill into specific companies to see their full ad portfolio. By examining which formats a company runs repeatedly, you can infer what is working for them — advertisers keep spending on formats that deliver results.

This research saves you from expensive trial and error. Instead of testing every format from scratch, you start with the formats that are already proven in your category and focus your creative resources where they are most likely to pay off.

**Tool:** [Ad Library Search](https://toolrouter.com/tools/ad-library-search)
**Skills:** search_facebook_ads, get_facebook_company_ads

## Agent Guides

- [How to Find Successful Ad Formats with Claude](https://toolrouter.com/tools/ad-library-search/use-cases/find-successful-ad-formats/claude): Guide for Claude
- [How to Find Successful Ad Formats with ChatGPT](https://toolrouter.com/tools/ad-library-search/use-cases/find-successful-ad-formats/chatgpt): Guide for ChatGPT
- [How to Find Successful Ad Formats with Copilot](https://toolrouter.com/tools/ad-library-search/use-cases/find-successful-ad-formats/copilot): Guide for Copilot
- [How to Find Successful Ad Formats with OpenClaw](https://toolrouter.com/tools/ad-library-search/use-cases/find-successful-ad-formats/openclaw): Guide for OpenClaw
