diagnostic-db-revisions

diagnostic-db-revisions is a skill for Claude Code from dr-robert-li/cowork-wordpress-expert. It costs 93 tokens per session (4,180 once invoked), scanned A, original, MIT.

A WordPress diagnostic skill that measures how many post revisions are stored, which post types create them, and how much database space cleanup might save.

In plain words
What is it for?
Use it to inspect revision counts, check the WP_POST_REVISIONS setting, calculate revisions per post, and estimate savings from limiting or removing old revisions.
Why use it?
WordPress revisions are saved copies of posts; too many copies can enlarge the database, backups, and administrative queries even though they are normally excluded from public pages.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the wordpress-expert plugin — 54 skills shipped together

Good fit Use it to inspect revision counts, check the WP_POST_REVISIONS setting, calculate revisions per post, and estimate savings from limiting or removing old revisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions
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.

Any agent
npx skills add dr-robert-li/cowork-wordpress-expert --skill diagnostic-db-revisions
Clone the repo
git clone --depth 1 https://github.com/dr-robert-li/cowork-wordpress-expert

Made for: Claude Code.

Or install wordpress-expert, the plugin that ships this one along with the rest of its 54 skills.

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 diagnostic-db-revisions

README.md
[![agentmods](https://agentmods.dev/badge/skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions/github.svg)](https://agentmods.dev/skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions)
Your own site
<a href="https://agentmods.dev/skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions"><img src="https://agentmods.dev/badge/skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for diagnostic-db-revisions

Your own site · 80×15
<a href="https://agentmods.dev/skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions"><img src="https://agentmods.dev/badge/skills/dr-robert-li/cowork-wordpress-expert/diagnostic-db-revisions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,180 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00093 $0.04180
Opus 5 $0.00046 $0.02090
Sonnet 5 $0.00019 $0.00836
Haiku 4.5 $0.00009 $0.00418

Measured 11d ago against content hash 1ab1f56ed753, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

diagnostic-db-revisions 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 11d 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.

skills/diagnostic-db-revisions/SKILL.md · 324 lines

How it starts

The opening of the file, as written. The whole thing — 324 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Diagnostic: Post Revision Analysis

You analyze WordPress post revision accumulation — how many revision records exist, which post types are generating the most revisions, whether revision capping is configured, and what database savings are available from setting or reducing a revision limit.

Overview

WordPress automatically saves a new revision every time a post is saved or autosaved. By default, there is no limit to how many revisions are stored — a post edited 500 times accumulates 500 revision rows in wp_posts. On active editorial sites, revision accumulation causes:

  • Database bloat: Each revision stores a full copy of the post content, including post_title, post_content, post_excerpt, and metadata
  • Slow query times: Larger wp_posts tables slow down post listing queries, especially in the admin panel
  • Backup size growth: Revision rows are included in database backups, increasing backup size and time
  • Maintenance overhead: Manual cleanup requires identifying and deleting revision posts safely

Revisions do NOT affect frontend performance directly — they are filtered out of public queries by WordPress. The performance impact is indirect: larger wp_posts tables, slower admin queries, and inflated backups.

WP_POST_REVISIONS is the PHP constant that controls revision behavior. It can be set in wp-config.php to any of: an integer limit, true (unlimited), or false (disabled). If not defined, WordPress defaults to unlimited revisions. This skill checks the actual configured value and handles all four cases.

How It Works

Prerequisites

Before running checks, you need:

  • Site connection profile from sites.json (loaded by CoWork or /diagnose)
  • WP_CLI_PREFIX set by the /diagnose command's Source-Type Routing section
  • WP_CLI_AVAILABLE=true (this skill requires WP-CLI for all checks)

If WP_CLI_AVAILABLE is false, return a single Warning finding and stop.

Step 1: Dynamic Table Prefix Retrieval

Never hardcode wp_. Always retrieve the prefix dynamically before running any queries:

Read the full file on GitHub · 324 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. 11d ago First seen · 324 lines · 93 tokens per session scan A 1ab1f56ed753

Subscribe to this mod's changes

diagnostic-db-revisions is a skill published in the GitHub repository dr-robert-li/cowork-wordpress-expert (28 stars, last pushed 6mo ago), licensed MIT. It adds 93 tokens to every session and 4,180 once invoked, about $0.0005 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 2026-08-30.

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