Claude Code and Opus used to do a great job a few months ago. It seemed to get it right more often than not. It seemed to be far better at figuring out what has to be done and getting it right on the first attempt. This is likely model related since Claude Code has received some bug fixes since.
The list of bugs and performance problems appears to keep growing: reduced usage quotas, poor performance with numerous attempts at getting things right, cache invalidation bugs, background requests which have to be disabled explicitly to avoid consuming the quota too fast, Opus appears to be quantized even with high thinking mode, poor tool use with tool search disabled, broken tool search with tool search enabled, laziness, poor planning, poor execution, gets stuck when debugging simple code issues, writes code which isn't required, starts making changes and executing whatever it wants when told to simply prepare a plan for something, it doesn't follow instructions to use agents as told and numerous other issues with following the instructions.
The quota story is atrocious. It's difficult to get anything done with Claude Code due to the quota reduction. The cache invalidation bugs don't help either.
The tool use is also a pain to deal with. It appears to choose tools randomly with or without tool search. It keeps running custom CLI commands when it has instructions to use Makefile targets. It often ingests the output of some command with hundreds of lines of output without discrimination. It often uses lots of bash grep and find commands when it has better tools available to search across files and to use MCP tools which are far more efficient. It ignores MCP tools most of the time.
This doesn't appear to be an issue with the prompt itself. I'll try to fix the system prompt next to work around some of the issues. It seems to not follow instructions and to do whatever it feels like doing. It comes off as one of those Q2-Q3 quantized models from huggingface.
The impact of the cache invalidation issue, reduced quota, poor model performance and Claude Code bugs together have rendered this service almost entirely useless for me. The poor model performance means that many more attempts are required and more requests are made to the Anthropic API. The Claude Code bugs and design lead to cache invalidation more often. This makes the impact of the reduced quota even worse. It makes a lot more API requests because the model doesn't get it right on the first 1-2 attempts or because it chooses less than optimal strategies to find what it's looking for.
The communication and Anthropic's overall handling of the reported bugs and problems hasn't been that good either.
As for the session ID and other things you might request for debugging, there's nothing special here that's not reported widely on every Reddit thread from several subreddits. I use 200k context with Opus and Sonnet. I use high thinking mode because anything less appears to be complete garbage with extremely poor results. I avoid compact in favor of knowledge transfer markdown files.
It'd be great to see Anthropic fix the caching issues, to improve the quality of the model, to address the Claude Code bugs, to sort out the quota fiasco, to improve their communication skills, to communicate more with their customers and to be more proactive overall. I'll take my money elsewhere otherwise.