slow-query-analysis

slow-query-analysis is a skill for Claude Code, Codex from abiswas97/postgres-mcp. It costs 34 tokens per session (209 once invoked), scanned A, original, ISC.

A workflow for investigating database queries that take too long to run. It examines query statistics, execution plans and existing indexes to identify likely causes.

In plain words
What is it for?
Use it to investigate high database CPU usage or slow responses and to suggest index changes, query rewrites or PostgreSQL configuration changes.
Why use it?
It helps locate expensive queries and explains whether missing indexes, inefficient joins, disk-based sorting or database configuration may be slowing them down.

Skill for Claude CodeCodex

Part of the postgres plugin — 3 skills, 1 MCP server shipped together

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 skills/abiswas97/postgres-mcp/slow-query-analysis
Any agent
npx skills add abiswas97/postgres-mcp --skill slow-query-analysis
Clone the repo
git clone --depth 1 https://github.com/abiswas97/postgres-mcp

Made for: Claude Code, Codex.

Or install postgres, the plugin that ships this one along with the rest of its 3 skills, 1 MCP server.

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 slow-query-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/abiswas97/postgres-mcp/slow-query-analysis.svg)](https://agentmods.dev/skills/abiswas97/postgres-mcp/slow-query-analysis)
Your own site
<a href="https://agentmods.dev/skills/abiswas97/postgres-mcp/slow-query-analysis"><img src="https://agentmods.dev/badge/skills/abiswas97/postgres-mcp/slow-query-analysis.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 209 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 $0.00034 $0.00209
Opus 5 $0.00017 $0.00105
Sonnet 5 $0.00007 $0.00042
Haiku 4.5 $0.00003 $0.00021

Measured 5d ago against content hash 6b3c210b1c3b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

slow-query-analysis 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 5d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/slow-query-analysis/SKILL.md · 18 lines

What it actually says

Workflow:

  1. Run get_slow_queries sorted by total_time to find biggest time consumers
  2. For the top offender, run explain_query with analyze=true to see the actual execution plan
  3. Look for: sequential scans on large tables (suggest index), nested loops with high row counts (suggest join rewrite), sorts spilling to disk (suggest work_mem increase or index)
  4. Check list_indexes on affected tables to see what indexes exist
  5. Suggest specific actions: CREATE INDEX statements, query rewrites, or configuration changes

If pg_stat_statements is not installed, guide setup:

  • Add shared_preload_libraries = 'pg_stat_statements' to postgresql.conf
  • Restart PostgreSQL
  • Run CREATE EXTENSION pg_stat_statements
  • For RDS/Aurora: modify parameter group, reboot instance
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. 5d ago First seen · 18 lines · 34 tokens per session scan A 6b3c210b1c3b

Subscribe to this mod's changes

slow-query-analysis is a skill published in the GitHub repository abiswas97/postgres-mcp (1 stars, last pushed 6mo ago), licensed ISC. It adds 34 tokens to every session and 209 once invoked, about $0.0002 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.

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