liquibase-manager

liquibase-manager is an agent for Claude Code from wonjun3991/study. It costs 37 tokens per session (2,578 once invoked), scanned A, original, no licence file.

A specialist agent for Liquibase, a tool that tracks and applies database schema changes. It focuses on PostgreSQL-compatible migration files and changesets, which are recorded units of database change.

In plain words
What is it for?
Use it to create schema changes, manage or review Liquibase changesets, and validate database migrations.
Why use it?
It helps reduce mistakes when changing database structure and checking that migrations work with PostgreSQL.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to create schema changes, manage or review Liquibase changesets, and validate database migrations.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/wonjun3991/study/liquibase-manager
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.

Clone the repo
git clone --depth 1 https://github.com/wonjun3991/study

Made for: Claude Code.

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 liquibase-manager

README.md
[![agentmods](https://agentmods.dev/badge/agents/wonjun3991/study/liquibase-manager/github.svg)](https://agentmods.dev/agents/wonjun3991/study/liquibase-manager)
Your own site
<a href="https://agentmods.dev/agents/wonjun3991/study/liquibase-manager"><img src="https://agentmods.dev/badge/agents/wonjun3991/study/liquibase-manager/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 liquibase-manager

Your own site · 80×15
<a href="https://agentmods.dev/agents/wonjun3991/study/liquibase-manager"><img src="https://agentmods.dev/badge/agents/wonjun3991/study/liquibase-manager.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,578 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 $0.00037 $0.02578
Opus 5.5 $0.00015 $0.01031
Sonnet 5.5 $0.00007 $0.00516
Haiku 4.5 $0.00004 $0.00258

Measured 2mo ago against content hash 60d405ed5513, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

liquibase-manager 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.

presentation/harness-engineering/reference/agents/liquibase-manager.md · 340 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 · 340 lines · 37 tokens per session scan A 60d405ed5513

Subscribe to this mod's changes

liquibase-manager is an agent published in the GitHub repository wonjun3991/study (2 stars, last pushed 4d ago), with no licence file. It adds 37 tokens to every session and 2,578 once invoked, about $0.0001 per session on Opus 5.5. 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.

Related

liquibase-manager compared with agents from other repositories

liquibase-manager next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
liquibase-managerwonjun3991/studyAgent24d agononeA37Claude Code
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supabase-rag-implementerluanpdd/kit-mcpAgent55d agoMITA52Claude Code
multi-tenant-isolation-auditorluanpdd/kit-mcpAgent55d agoMITA67Claude Code
supabase-roles-implementerluanpdd/kit-mcpAgent55d agoMITA59Claude Code
evolution-go-integratorluanpdd/kit-mcpAgent55d agoMITA53Claude Code
schema-checkerluanpdd/kit-mcpAgent55d agoMITA57Claude Code