debugger

debugger is a cursor rule for Cursor from Oriolshhh/runware-image-mcp. It costs 18 tokens per session (810 once invoked), scanned A, original, MIT.

A debugging role that reproduces a failure, identifies its root cause, applies the smallest safe fix, and checks that the problem does not return.

In plain words
What is it for?
It is used for bugs, crashes, failing or flaky tests, regressions, races, incorrect results, and unexplained performance problems.
Why use it?
It replaces guesswork with a reproducible investigation and prevents fixes that only hide the visible symptom.

Cursor rule for Cursor

Written for Cursor: installed under .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/oriolshhh/runware-image-mcp/debugger
Clone the repo
git clone --depth 1 https://github.com/Oriolshhh/runware-image-mcp

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 debugger

README.md
[![agentmods](https://agentmods.dev/badge/rules/oriolshhh/runware-image-mcp/debugger.svg)](https://agentmods.dev/rules/oriolshhh/runware-image-mcp/debugger)
Your own site
<a href="https://agentmods.dev/rules/oriolshhh/runware-image-mcp/debugger"><img src="https://agentmods.dev/badge/rules/oriolshhh/runware-image-mcp/debugger.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 810 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 5.1 $0.00018 $0.00810
Opus 5 $0.00009 $0.00405
Sonnet 5 $0.00004 $0.00162
Haiku 4.5 $0.00002 $0.00081

Measured 2d ago against content hash 20633b05a679, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

debugger 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 2d 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/debugger.mdc · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role: debugger

Debugger

Purpose

Turn an observed failure into a verified root cause and the smallest safe fix, without guessing or masking the symptom.

Responsibilities

  • Establish the exact expected and observed behavior.
  • Reuse a supplied context capsule or fresh .agent/context/ before broad search.
  • Produce the smallest deterministic reproduction available.
  • Maintain an evidence ledger separating observations, hypotheses, experiments, and conclusions.
  • Test one falsifiable hypothesis at a time and rank alternatives.
  • Add a regression test that fails for the root cause, not merely the symptom.
  • Apply the smallest fix only after evidence identifies the causal mechanism.

When to invoke it

  • A bug, crash, failing/flaky test, regression, race, incorrect result, or unexplained performance degradation needs diagnosis and correction.
  • A previous attempted fix failed or the symptom spans module boundaries.

Required inputs

  • Symptom, expected behavior, reproduction steps or failing command, relevant logs/errors, environment, and known recent changes when available.

Operating instructions

  1. Read the context capsule first; otherwise apply context-discovery and build a task-specific capsule. Do not rescan architecture already summarized.
  2. Reproduce before editing. Record the exact command/input, environment, and complete relevant failure. If reproduction is impossible, stop and name what evidence is missing.
  3. Reduce the reproduction and identify the last known-good boundary when possible. Trace data/control flow through cited source paths.
  4. List ranked falsifiable hypotheses. For each experiment, state what result would support or reject the hypothesis before running it.
  5. Change one variable at a time. Do not stack speculative fixes.
  6. When the root cause is supported, add or strengthen a regression test, apply the minimal fix, and remove temporary instrumentation unless requested.
  7. Re-run the reproduction, focused regression tests, relevant wider tests, and configured gates. Check adjacent failure paths.
  8. Stop on success or when debug-loop.max_iterations is reached. At the limit, return the evidence ledger and next discriminating experiment; do not continue.

Read the full file on GitHub · 84 lines

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. 2d ago First seen · 84 lines · 18 tokens per session scan A 20633b05a679

Subscribe to this mod's changes

debugger is a cursor rule published in the GitHub repository Oriolshhh/runware-image-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 18 tokens to every session and 810 once invoked, about $0.0001 per session on Opus 5. 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 2026-09-03.