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 HoangNguyen0403/agent-skills-standard --skill database-postgresqlgit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/database-postgresql)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/database-postgresql"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/database-postgresql/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/hoangnguyen0403/agent-skills-standard/database-postgresql"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/database-postgresql.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00040 | $0.00409 |
| Opus 5 | $0.00020 | $0.00204 |
| Sonnet 5 | $0.00008 | $0.00082 |
| Haiku 4.5 | $0.00004 | $0.00041 |
Grade A, and why
database-postgresql 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 8d 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.
What it actually says
PostgreSQL Database Standards
Priority: P0 (CRITICAL)
Rules
- Keep PostgreSQL choices driven by real read/write paths.
- Use explicit migrations; never rely on
synchronize: truein production. - Treat RLS, constraints, and indexes as first-class schema behavior; use
queryRunner.query()when raw migration SQL is required. - Enable RLS explicitly in a migration (
ALTER TABLE <table> ENABLE ROW LEVEL SECURITY) and create tenant policies before application rollout. - Put multi-step consistency inside one transaction boundary.
Verify
- Destructive schema change uses expand -> backfill -> contract rollout.
- Query shape has matching indexes for filter, join, and sort paths.
- Pagination strategy is explicit.
- Transaction boundary matches one business action.
- RLS or tenant predicates are supported by indexes.
Anti-Patterns
- No N+1 queries: Use query builders or eager-load relations instead of lazy-loading in loops.
- No heavy RLS joins: Keep RLS predicates simple; move complex logic to query/view layer.
- No synchronize in production: Always run explicit migrations;
synchronize: truedestructive. - No blind index sprawl: each index needs a query owner.
References
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago First seen · 48 lines · 40 tokens per session scan A af4077bfa6a9
database-postgresql is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (565 stars, last pushed 2d ago), licensed MIT. It adds 40 tokens to every session and 409 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 2026-09-03.
Other skills, from other repositories
postgresql
Skill "postgresql" from dhaupin/vant, covering postgresql, when to use, what to do, 1. connect and 2. common queries.
supabase
Skill "supabase" from dhaupin/vant, covering supabase, when to use, what to do, 1. connect and supabase-js.
postgresql-table-design
Use this skill when designing or reviewing a PostgreSQL-specific schema. Covers best-practices, data types, indexing, constraints, performance patterns, and advanced features.
prisma-postgres-setup
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prisma-postgres
Prisma Postgres setup and operations guidance across Console, create-db CLI, Management API, and Management API SDK. Use when creating Prisma Postgres databases, working in Prisma Console, provisioning with create-db/create-pg/create-postgres, or integrating programmatic provisioning with service tokens or OAuth.
database-skill
A database assistant for Volcengine and some public databases. It supports metadata inspection, data queries and analysis, health checks, troubleshooting, data quality work, and monitoring across MySQL, PostgreSQL, SQL Server, MongoDB, and Redis.