# Core Concepts

- [Architecture & Parallel Execution](https://docs.substreams.dev/reference-material/core-concepts/architecture.md): Learn about the Substreams architecture
- [RPC Protocol](https://docs.substreams.dev/reference-material/core-concepts/rpc-protocol.md): Substreams RPC protocol versions and performance optimizations
- [Foundational Stores](https://docs.substreams.dev/reference-material/core-concepts/foundational-store-reference.md): Foundational Store architecture, components, and technical reference
- [Module Concepts](https://docs.substreams.dev/reference-material/core-concepts/modules.md): Learn the basics about modules
- [Module Caching](https://docs.substreams.dev/reference-material/core-concepts/module-caching.md): Learn how Substreams modules are cached for efficient execution
- [Reliability Guarantees](https://docs.substreams.dev/reference-material/core-concepts/reliability-guarantees.md)
- [FAQ](https://docs.substreams.dev/reference-material/core-concepts/faq.md): StreamingFast Substreams frequently asked questions


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.substreams.dev/reference-material/core-concepts.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.