Databasement is a self-hosted web application for scheduling, storing, and restoring backups of several kinds of databases. It is for managing database backups across local storage, S3-compatible storage, SFTP, Samba, and other configured destinations, including databases in private networks. The catalogue instruction and MCP integration connect coding agents to its backup-management workflows.
Borrowing it
Nothing to install: this file belongs to David-Crty/databasement. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/David-Crty/databasement/main/.ai/skills/worktree-development/SKILL.mdgit clone --depth 1 https://github.com/David-Crty/databasementWrote 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.
[](https://agentmods.dev/skills/david-crty/databasement/worktree-development)<a href="https://agentmods.dev/skills/david-crty/databasement/worktree-development"><img src="https://agentmods.dev/badge/skills/david-crty/databasement/worktree-development/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.
<a href="https://agentmods.dev/skills/david-crty/databasement/worktree-development"><img src="https://agentmods.dev/badge/skills/david-crty/databasement/worktree-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00114 | $0.01290 |
| Opus 5.5 | $0.00046 | $0.00516 |
| Sonnet 5.5 | $0.00023 | $0.00258 |
| Haiku 4.5 | $0.00011 | $0.00129 |
Grade A, and why
worktree-development 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Working in a worktree
The stack runs as one Compose project started from the main checkout, which
bind-mounts the whole repo at /app. A worktree under
.claude/worktrees/<name>/ is therefore already visible inside the container
at /app/.claude/worktrees/<name>/. Nothing needs to be mounted, rebuilt or
restarted.
Worktrees must live inside the repo. The Makefile maps the worktree to
/app/<path relative to the repo>, so one created elsewhere
(git worktree add ../x) points at a path the container does not have.
Always go through make
make test, make phpstan, make lint-fix and the rest work unchanged from a
worktree: the COMPOSE_ROOT block at the top of the Makefile finds the Compose
project through the shared git dir and runs in the worktree's container path.
Never run a bare docker compose there. docker-compose.yml is tracked, so the
worktree has its own copy, and Compose silently addresses a different
project named after the worktree directory, with no containers. Hence
service "app" is not running about a container that is running fine. Starting
that second project is no fix either: its host ports are already taken.
If the Makefile has no COMPOSE_ROOT block, the branch predates worktree
support. Merge origin/main first.
Setting up a fresh worktree
make install.vendor/is gitignored and absent, so Pest, PHPStan and Pint have nothing to run. It takes a few minutes.make ide-helper._ide_helper_models.phpis gitignored and listed in PHPStan'sscanFiles, so a standalonemake phpstandies withScanned file .../_ide_helper_models.php does not existuntil it exists.
Do not symlink vendor to the main checkout's. Composer's autoloader
resolves __DIR__ through the symlink to /app/vendor, so app/ classes load
from the main branch's copies and the tests run against code you did not
write. The symptom is a missing enum case or method that is plainly there in
the file you just edited.
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.
- 1mo ago First seen · 115 lines · 114 tokens per session scan A c22c9dbe50c1
worktree-development is a skill published in the GitHub repository David-Crty/databasement (2,606 stars, last pushed 2d ago), licensed MIT. It adds 114 tokens to every session and 1,290 once invoked, about $0.0005 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 2026-09-30.
worktree-development compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| worktree-developmentDavid-Crty/databasement | Skill | 2.6k | 2d ago | MIT | A | 114 | Claude Code, Codex |
| mysqlericrisco/rsc-harness | Skill | 503 | 2d ago | MIT | A | 116 | Claude Code, Codex |
| Drizzle ORM TestingPramodDutta/qaskills | Skill | 245 | 3d ago | MIT | A | 36 | Claude Code, Codex |
| use-gfs-mcpGuepard-Corp/gfs | Skill | 163 | yesterday | MIT | A | 30 | Claude Code, Codex |
| mysql-expertpersonamanagmentlayer/pcl | Skill | 44 | 11d ago | Apache-2.0 | A | 99 | Claude Code |
| use-gfs-cliGuepard-Corp/gfs | Skill | 163 | yesterday | MIT | C | 33 | Claude Code, Codex |
| mysql-aiopsAIops-tools/MySQL-AIops | Skill | 0 | 7d ago | MIT | A | 490 | Claude Code |