In my projects there's generally a "developer" way to do things and an "llm agent" way to do things.

For the llm a lot of linting and build/test tools go into simple scripts that the llm can run and get shorthand info out of. Some tools, if you have the llm run them, they're going to ingest a lot from the output (like a big stacktrace or something). I want to keep context clean so I have the llm create the tool to use for build/test/linting and I tell it to create it so the outputs will keep its context clean, then I have it document it in the .md file.

When working with the LLM I have to start out pretty explicit about using the tooling. As we work through things it will start to automatically run the tooling. Sometimes it will want to do something else, I just nudge it back to use the tooling (or I'll ask it why or if there are benefits to the other way and if there are we'll rebuild the tooling to use the other way).

Finally, if the LLM is really having trouble, I kill the session and start a new one. It used to feel bad to do that. I'd feel like I'm losing a lot of info that's in context. But now, I feel like it's not so bad... but I'm not sure if that's because the llms are better or if my workflow has adapted.

Now, let me backup a little bit. I mentioned that I don't have the llm use git. That's the control I maintain. And with that my workflow is: llm builds feature->llm runs linters/tests->I e2e test whatever I'm building by deploying to a dev/staging/local env->once verified I commit. Now I will continue that context window/session until I feel like the llm starts fucking up. Then I kill the session and start a new one. I rarely compact, but it does happen and I generally don't fret about it too much.

I try to keep my units of work small and I feel like it does the best when I do. But then I often find myself surprised at how much it can do from a single prompt, so idk. I do understand some of the skepticism because a lot of this stuff sounds "hand-wavy". I'm hoping we all start to hone in on some general more concrete patterns but with it being so non-deterministic I'm not sure if we will. It feels like everyone is using it differently and people are having successes and failures across different things. People where I work LOVE MCPs but I can't stand them. When I use them it always feels like I have to remind the llm that it has an MCP, then it feels like the MCP takes too much context window and sometimes the llm still trips over how to use it.

Ok, that's a good tip about separate tools/scripts for the LLM, I did something similar less than a year ago so that I kept lint/test output to a minimum but it was still invoked via git hooks. I'll try again with scripts next time I'm doing this. My hope was to let the agent commit to a branch (with code that passed lint/test/prettier/etc), push it, auto-deploys to preview branches, and then that's where I'd do my e2e/QA and once I was happy I could merge it and it get deployed to the main site.