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 agentmods add skills/dhaupin/vant/vant-skill-postgresqlnpx skills add dhaupin/vant --skill vant-skill-postgresqlgit clone --depth 1 https://github.com/dhaupin/vantWhat 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 | $0.00006 | $0.00333 |
| Opus 5 | $0.00003 | $0.00167 |
| Sonnet 5 | $0.00001 | $0.00067 |
| Haiku 4.5 | $0.00001 | $0.00033 |
Grade A, and why
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 2d 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 operations.
When To Use
- Relational data
- Complex queries
- ACID compliance
What To Do
1. Connect
// pg
import { Pool } from 'pg'
const pool = new Pool({
connectionString: 'postgres://user:pass@localhost:5432/db'
})
const client = await pool.connect()
2. Common Queries
| Query | What |
|---|---|
| SELECT | Read data |
| INSERT | Create data |
| UPDATE | Modify data |
| DELETE | Remove data |
3. Patterns
-- Basic
SELECT * FROM users WHERE id = 1
-- Join
SELECT u.name, o.total
FROM users u
JOIN orders o ON u.id = o.user_id
-- Aggregate
SELECT COUNT(*), SUM(total) FROM orders
4. Migrations
# node-pg-migrate
npx node-pg-migrate create add_users
npx node-pg-migrate up
Output
## PostgreSQL
| Query | Rows | Time |
|-------|------|------|
| SELECT | [n] | [n]ms |
### Tables
- [list]
Role: PostgreSQL DBA
Input: SQL, schema
Output: Data
Relational data.
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.
- 2d ago First seen · 92 lines · 6 tokens per session scan A b08cb901dffb
postgresql is a skill published in the GitHub repository dhaupin/vant (9 stars, last pushed 3d ago), licensed MIT. It adds 6 tokens to every session and 333 once invoked, about $0.0000 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.
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