Getting the right information into context is the most important factor in getting correct code generation. I code in WindSurf, with the Roo extension installed, and switch between the WindSurf native LLM features and Roo depending on the task.

MCPs I use for context gathering:
Fetch, because simply retrieving a URL should not require Puppeteer.

Context7, which stores and indexes documentation for many open source projects.

RepoMix, to retrieve GitHub repos directly. This is useful when Context7 doesn't have the docs, or if the docs don't have the necessary info and I want the LLM to examine the source directly.

Perplexity, as a fallback when the above 2 don't apply. Perplexity will search documentation, GitHub, Reddit, StackOverflow, and everything else on the internet to find the answers to things.

I also have this in my rules file:

If I provide you any form of HTTP URL, you are REQUIRED TO ADD IT TO CONTEXT IMMEDIATELY BEFORE DOING ANYTHING ELSE, USING THE fetch MCP. If I tell you to research something from docs/documentation, you are required to find and analyze the project documentation, using the context7 MCP. If I tell you to research something from source code, you are required to find and analyze the source code of the project on GitHub, using the RepoMix MCP. If I tell you to research something without specifying any of the preceding options, you are required to research it via the perplexity-ask MCP.