Borrowing it
Nothing to install: this file belongs to nimbus-agent/Nimbus. 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/nimbus-agent/Nimbus/main/.claude/commands/nimbus-db-migrations.mdgit clone --depth 1 https://github.com/nimbus-agent/NimbusWrote 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/commands/nimbus-agent/nimbus/nimbus-db-migrations)<a href="https://agentmods.dev/commands/nimbus-agent/nimbus/nimbus-db-migrations"><img src="https://agentmods.dev/badge/commands/nimbus-agent/nimbus/nimbus-db-migrations/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/commands/nimbus-agent/nimbus/nimbus-db-migrations"><img src="https://agentmods.dev/badge/commands/nimbus-agent/nimbus/nimbus-db-migrations.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 | $0.00127 | $0.02438 |
| Opus 5 | $0.00063 | $0.01219 |
| Sonnet 5 | $0.00025 | $0.00488 |
| Haiku 4.5 | $0.00013 | $0.00244 |
Grade A, and why
nimbus-db-migrations 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 3d 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 3d ago Changed 699dd5c08863
- 10d ago First seen · 174 lines · 127 tokens per session scan A 221b4c851d0e
nimbus-db-migrations is a command published in the GitHub repository nimbus-agent/Nimbus (5 stars, last pushed today), licensed AGPL-3.0. It adds 127 tokens to every session and 2,438 once invoked, about $0.0006 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.
Other commands, from other repositories
trex.test.integration
Run integration tests against a real PostgreSQL database (provisioned automatically via testcontainers).
trex.db.setup
Start a fresh PostgreSQL container and run all migrations. If a database already exists, this will tear it down first.
refresh-catalog
Rebuild the catalog database used for querying project metadata.
toh-connect
Connect app to Supabase backend with schema and RLS policies.
create-entity
Create a new entity in the domain model using MDL.
create-plugin
Guided end-to-end plugin creation workflow with component design, implementation, and validation.