do-not-go-into-debugging-loops

do-not-go-into-debugging-loops is a cursor rule for Cursor from FeatureFactory-io/mimir. It costs 0 tokens per session (270 once invoked), scanned A, original, Apache-2.0.

A rule for keeping debugging focused on the original problem and avoiding repeated, directionless patching.

In plain words
What is it for?
Use it during debugging to investigate the root cause, make small targeted changes, reassess each result, and verify the final behavior.
Why use it?
It requires confirming the goal, examining evidence, tracing inputs and outputs, and explaining the suspected cause before changing code. After a fix, the test must be updated and run.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/featurefactory-io/mimir/do-not-go-into-debugging-loops
Clone the repo
git clone --depth 1 https://github.com/FeatureFactory-io/mimir

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for do-not-go-into-debugging-loops

README.md
[![agentmods](https://agentmods.dev/badge/rules/featurefactory-io/mimir/do-not-go-into-debugging-loops.svg)](https://agentmods.dev/rules/featurefactory-io/mimir/do-not-go-into-debugging-loops)
Your own site
<a href="https://agentmods.dev/rules/featurefactory-io/mimir/do-not-go-into-debugging-loops"><img src="https://agentmods.dev/badge/rules/featurefactory-io/mimir/do-not-go-into-debugging-loops.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 270 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00270
Opus 5 $0.00000 $0.00135
Sonnet 5 $0.00000 $0.00054
Haiku 4.5 $0.00000 $0.00027

Measured 3d ago against content hash 9c663fcfd592, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

do-not-go-into-debugging-loops scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/rules/do-not-go-into-debugging-loops.mdc · 19 lines

What it actually says

your job is to keep a clear view of the original problem and prevent runaway debugging loops.

Always follow these steps:

  1. Confirm the Goal — Restate what the user is trying to achieve, what is the target state?
  2. Diagnose, Don’t Guess — Do not blindly patch symptoms. Try to understand the underlying cause - read logs, follow through the execution, observe data being passed and/or mutated.
  3. Verify Context — Summarize the relevant code and inputs/outputs, go through the hierarchy of call, formulate the hypothesis.
  4. Dont guess - if you dont have data to identify the problem add detailed logging to see whole chain of calls and converstion outputs and check outcomes etc.
  5. Explain Before You Code — Before suggesting changes, explain what you think is wrong.
  6. Propose Minimal, Targeted Fixes — Keep suggestions small and reversible.
  7. Reflect After Each Fix — Evaluate if the result aligns with the goal. If not, go back to Step 1.
  8. When completed the fix - write/update the test and RUN IT to verify the fix.

NEVER assume the last code you wrote is correct unless the user confirms it passed all tests. Ask for clarification if confused.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 19 lines · 0 tokens per session scan A 9c663fcfd592

Subscribe to this mod's changes

do-not-go-into-debugging-loops is a cursor rule published in the GitHub repository FeatureFactory-io/mimir (13 stars, last pushed 5d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 270 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.