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# Interacting with APIs | |
> [Conceptual Guide](https://docs.langchain.com/docs/use-cases/apis) | |
Lots of data and information is stored behind APIs. | |
This page covers all resources available in LangChain for working with APIs. | |
## Chains | |
If you are just getting started, and you have relatively simple apis, you should get started with chains. | |
Chains are a sequence of predetermined steps, so they are good to get started with as they give you more control and let you | |
understand what is happening better. | |
- [API Chain](../modules/chains/examples/api.ipynb) | |
## Agents | |
Agents are more complex, and involve multiple queries to the LLM to understand what to do. | |
The downside of agents are that you have less control. The upside is that they are more powerful, | |
which allows you to use them on larger and more complex schemas. | |
- [OpenAPI Agent](../modules/agents/toolkits/examples/openapi.ipynb) | |