agentmods.dev

postgres-pro

postgres-pro is a skill for Claude Code, Codex from johnefemer/skillfish. It costs 0 tokens per session (10,668 once invoked), scanned A, original, no licence file.

A guide to advanced PostgreSQL database work, including indexes, JSONB data, text search, partitioning, replication, vector search, and performance tuning.

In plain words
What is it for?
It is for choosing indexes, structuring large tables, searching text or embeddings, replicating data, and tuning database performance.
Why use it?
It helps design and improve PostgreSQL databases when basic queries and tables are not enough.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 4repo 4d ago A scan 0 tokens no licence

Good fit It is for choosing indexes, structuring large tables, searching text or embeddings, replicating data, and tuning database performance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/johnefemer/skillfish/postgres-pro
View source ↗ johnefemer/skillfish coach.omazy.ai
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 johnefemer/skillfish --skill postgres-pro
Clone the repo
git clone --depth 1 https://github.com/johnefemer/skillfish

Made for: Claude Code, Codex.

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 postgres-pro

README.md
[![agentmods](https://agentmods.dev/badge/skills/johnefemer/skillfish/postgres-pro/github.svg)](https://agentmods.dev/skills/johnefemer/skillfish/postgres-pro)
Your own site
<a href="https://agentmods.dev/skills/johnefemer/skillfish/postgres-pro"><img src="https://agentmods.dev/badge/skills/johnefemer/skillfish/postgres-pro/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 postgres-pro

Your own site · 80×15
<a href="https://agentmods.dev/skills/johnefemer/skillfish/postgres-pro"><img src="https://agentmods.dev/badge/skills/johnefemer/skillfish/postgres-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10,668 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 unknown 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 $0.00000 $0.10668
Opus 5.5 $0.00000 $0.04267
Sonnet 5.5 $0.00000 $0.02134
Haiku 4.5 $0.00000 $0.01067

Measured 2mo ago against content hash 835717037aa2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

postgres-pro 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 2mo 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/postgres-pro/SKILL.md · 1,204 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 1,204 lines · 0 tokens per session scan A 835717037aa2

Subscribe to this mod's changes

postgres-pro is a skill published in the GitHub repository johnefemer/skillfish (4 stars, last pushed 4d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 10,668 tokens. 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.

DatabasesPostgreSQL
Related

postgres-pro compared with skills from other repositories

postgres-pro next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
postgres-projohnefemer/skillfishSkill44d agononeA0Claude Code, Codex
alloydb-basicsgoogle/skillsSkill23ktodayApache-2.0A72Claude Code, Codex
postgresql-table-designwshobson/agentsSkill42kyesterdayMITA37Claude Code
db-repairgarrytan/gbrainSkill32ktodayMITA96Claude Code
volcengine-rds-postgresqlbytedance/agentkit-samplesSkill484yesterdayApache-2.0A63Claude Code, Codex
dsqlawslabs/agent-pluginsSkill937yesterdayApache-2.0A246Claude Code
postgresdbericrisco/rsc-harnessSkill5032d agoMITA91Claude Code, Codex