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.
npx skills add thermiteau/maverick --skill mav-bp-database-managementgit clone --depth 1 https://github.com/thermiteau/maverickWrote 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/thermiteau/maverick/mav-bp-database-management)<a href="https://agentmods.dev/skills/thermiteau/maverick/mav-bp-database-management"><img src="https://agentmods.dev/badge/skills/thermiteau/maverick/mav-bp-database-management/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/thermiteau/maverick/mav-bp-database-management"><img src="https://agentmods.dev/badge/skills/thermiteau/maverick/mav-bp-database-management.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 | $0.00047 | $0.00712 |
| Opus 5 | $0.00023 | $0.00356 |
| Sonnet 5 | $0.00009 | $0.00142 |
| Haiku 4.5 | $0.00005 | $0.00071 |
Grade A, and why
mav-bp-database-management 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 10d 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 — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Database & Data Management Standards
Maverick's hard rules for schema migrations, environment isolation, and data safety.
Maverick's Rules
- Forward-only in production — never roll back a production migration manually; undo with a new forward migration.
- Every migration is reversible — each migration includes an up and a down operation, even if the down is only ever used in development.
- Never edit an already-applied migration — once applied to any shared environment, write a new migration instead.
- No ad-hoc DDL against shared environments — every schema change is a versioned migration file in version control.
- Strict environment isolation — dev, staging, and production databases are completely separate. Never connect to production from a local machine (bastion/audited admin tools only). Never copy production data to development — seed data or anonymised snapshots only.
- Seed data is synthetic and idempotent — never production data in seed files; re-running seeds produces the same result.
- No speculative indexes — index only columns appearing in actual query
WHERE/JOIN/ORDER BY/GROUP BYclauses; remove unused indexes. - Connection pooling is mandatory — never open a connection per request; configure connection and idle timeouts.
- Stage destructive schema changes —
DROP/RENAME/type changes require the expand-backfill-contract pattern: deploy code that stops using the column first, then migrate.
Project Implementation Lookup
Check for docs/maverick/skills/database-management/SKILL.md. If present, read it — it wins on specifics (library, config, conventions). If missing, proceed with these standards and note the gap in your summary.
Detecting Database Issues in Code Review
When reviewing code, flag these patterns:
| Pattern | Issue | Fix |
|---|---|---|
| Raw SQL without parameterised queries | SQL injection risk | Use parameterised queries or ORM |
| Manual schema change (ad-hoc DDL) | Unreproducible, untracked change | Create a migration file |
| Editing an already-applied migration | Breaks migration history | Write a new migration |
| No index on columns used in WHERE/JOIN | Performance degradation at scale | Add appropriate index |
| Opening connection per request (no pooling) | Connection exhaustion | Use connection pool |
| Hardcoded connection string | Security risk, environment coupling | Use environment variables or secrets manager |
| Missing down migration | Cannot revert in development | Add reversible down operation |
| Production data in seed files | Data leak, privacy violation | Use synthetic data only |
DROP TABLE or DROP COLUMN without staged rollout |
Breaks running application | Stage the change: remove code references first |
| No transaction wrapping for multi-step migration | Partial application on failure | Wrap in transaction where the database supports it |
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.
- 10d ago First seen · 46 lines · 47 tokens per session scan A 4a50c218a128
mav-bp-database-management is a skill published in the GitHub repository thermiteau/maverick (11 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 47 tokens to every session and 712 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 2026-08-30.
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