log-ops SKILL.md skillA

log-ops from 0xdarkmatter/claude-mods is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add 0xdarkmatter/claude-mods/log-ops@git:20260410.d221136

Pins git:20260410.d221136 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
0xdarkmatter/claude-mods
Path
skills/log-ops/SKILL.md
Versions recorded
3
Latest version
git:20260410.d221136, committed Apr 10, 2026
First version recorded
Mar 9, 2026
Size
16,139 bytes
Repository stars
68
License
MIT

Log analysis and JSONL processing - structured extraction, cross-log correlation, timeline reconstruction, pattern search.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Log Operations

Practical patterns for analyzing log files -- especially JSONL format used in agent conversation logs, benchmark outputs, and structured application logs.

## Log Format Decision Tree

```
Unknown Log File
│
├─ Is it one JSON object per line?
│  ├─ Yes ──────────────────────── JSONL
│  │  ├─ Small file (<100MB)
│  │  │  └─ jq for extraction, jq -s for aggregation
│  │  ├─ Large file (100MB-1GB)
│  │  │  └─ rg prefilter then pipe to jq
│  │  └─ Huge file (>1GB)
│  │     └─ split + parallel jq, or jq --stream
│  │
│  └─ No
│     ├─ Is it one large JSON object/array?
│     │  └─ Yes ──────────────── Single JSON
│     │     └─ jq --stream for SAX-style, or jq directly if fits in memory
│     │
│     ├─ Does it have key=value pairs?
│     │  └─ Yes ──────────────── Structured (logfmt / key-value)
│     │     └─ rg for search, awk/sd for extraction, angle-grinder for aggregation
│     │
│     ├─ Does it follow syslog format? (timestamp hostname service[pid]: message)
│     │  └─ Yes ──────────────── Syslog
│     │     └─ rg for search, awk for column extraction, lnav for interactive
│     │
│     ├─ Is it space/tab delimited with consistent columns?
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add 0xdarkmatter/claude-mods/log-ops@sha256:fe4d99e7c7445f02

The line at the top of this page pins the label git:20260410.d221136, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_5o2nu4pggez2pcsp.svg)](https://markdownregistry.com/a/art_5o2nu4pggez2pcsp)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Mar 9, 2026 and Apr 10, 2026, about one every 16 days.

versioncommittedcommitsizeaudit
git:20260410.d221136 latest2026-04-10 d221136 16,139 BA view · diff
git:20260309.c3851c12026-03-09 c3851c1 16,094 BA view · diff
git:20260309.0ff23432026-03-09 0ff2343 15,327 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (16139 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

0xdarkmatter/claude-mods · 68 stars · license MIT · pushed 2026-10-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_5o2nu4pggez2pcsp
GET https://markdownregistry.com/api/v1/resolve?ref=0xdarkmatter/claude-mods/log-ops
GET https://markdownregistry.com/api/v1/blob/fe4d99e7c7445f0241e0cc332dfff132b9821c243d8f3181a8415db8e38f20f9

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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