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/ystemsrx/sql_to_er/sql2ernpx skills add ystemsrx/sql_to_ER --skill sql2ergit clone --depth 1 https://github.com/ystemsrx/sql_to_ERWhat 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 | $0.00063 | $0.01024 |
| Opus 5 | $0.00032 | $0.00512 |
| Sonnet 5 | $0.00013 | $0.00205 |
| Haiku 4.5 | $0.00006 | $0.00102 |
Grade A, and why
sql2er 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.
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 ships with it
13 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.
- agents/openai.yaml 175 B
- references/commands.md 8.8 KB
- references/data-model.md 3.1 KB
- scripts/build.mjs 2.1 KB runs code
- scripts/engine/adapter.ts 3.1 KB runs code
- scripts/engine/cli.ts 16 KB runs code
- scripts/engine/describe.ts 32 KB runs code
- scripts/engine/exporters.ts 10 KB runs code
- scripts/engine/ops.ts 36 KB runs code
- scripts/engine/shims.ts 956 B runs code
- scripts/engine/skeleton.ts 80 B runs code
- scripts/engine/tsconfig.json 427 B
- scripts/sql2er-agent.mjs 2622 KB runs code
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 · 86 lines · 63 tokens per session scan A be5ed347175d
sql2er is a skill published in the GitHub repository ystemsrx/sql_to_ER (183 stars, last pushed 1mo ago), licensed AGPL-3.0. It adds 63 tokens to every session and 1,024 once invoked, about $0.0003 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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