200_logging_strategy

200_logging_strategy is a cursor rule for Cursor from irskep/persistproc. It costs 253 tokens per session, scanned A, original, MIT.

A project rule for detailed, scoped logging. Logs record what happened during test runs and program executions, including useful debugging details.

In plain words
What is it for?
Use it to define command-line verbosity, module and function log scopes, machine-readable log formats, and complete debug logs for persistproc runs.
Why use it?
It makes failed tests and multi-process runs easier to understand without relying on arbitrary waiting periods or guesswork.

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/irskep/persistproc/200_logging_strategy
Clone the repo
git clone --depth 1 https://github.com/irskep/persistproc

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 200_logging_strategy

README.md
[![agentmods](https://agentmods.dev/badge/rules/irskep/persistproc/200_logging_strategy.svg)](https://agentmods.dev/rules/irskep/persistproc/200_logging_strategy)
Your own site
<a href="https://agentmods.dev/rules/irskep/persistproc/200_logging_strategy"><img src="https://agentmods.dev/badge/rules/irskep/persistproc/200_logging_strategy.svg" alt="Measured on agentmods" height="20"></a>
Per session 253 This file is loaded in full into every session.
When invoked 253 The same file — it is already loaded in full.
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 $0.00253 $0.00253
Opus 5 $0.00127 $0.00127
Sonnet 5 $0.00051 $0.00051
Haiku 4.5 $0.00025 $0.00025

Measured 4d ago against content hash 51e6753c75e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

200_logging_strategy 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 4d 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/200_logging_strategy.mdc · 21 lines

What it actually says

Logging in this project should be detailed, scoped, and extensive. Logs are the primary way to debug test runs, so they should make execution history obvious.

There should be an explicit log scope for command line output. Without -v or -vv, all other logging should be silenced from the command line.

Otherwise, each module and function should have its own log scope. Error, warn, info, and debug levels should be used appropriately.

Each invocation of persistproc should write a complete log with debug verbosity to data_dir/persistproc.run..log. This may require synchronizing across threads or using multiprocessing and a queue, since we're managing multiple processes potentially using threads, but we don't necessarily need to go that far until we know we need it.

The outcome is that after every failed test run, we'll have incredible detail to see exactly what happened and find an appropriate fix that doesn't involve setting arbitrary timeouts.

Prefer scoped log objects over the global logger.

Logging is already configured in logging_utils.py.

LOG FORMAT Debug logs should be machine-readable first, human-readable second. It should be easy to write test cases against these logs because the wording in English will not shift around.

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. 4d ago First seen · 21 lines · 253 tokens per session scan A 51e6753c75e1

Subscribe to this mod's changes

200_logging_strategy is a cursor rule published in the GitHub repository irskep/persistproc (8 stars, last pushed 1y ago), licensed MIT. It adds 253 tokens to every session, about $0.0013 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 2026-08-31.