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 antonillos/safeselect --skill safeselect-mongodbgit clone --depth 1 https://github.com/antonillos/safeselectWrote 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/antonillos/safeselect/safeselect-mongodb)<a href="https://agentmods.dev/skills/antonillos/safeselect/safeselect-mongodb"><img src="https://agentmods.dev/badge/skills/antonillos/safeselect/safeselect-mongodb/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/antonillos/safeselect/safeselect-mongodb"><img src="https://agentmods.dev/badge/skills/antonillos/safeselect/safeselect-mongodb.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 | $0.00045 | $0.00296 |
| Opus 5.5 | $0.00018 | $0.00118 |
| Sonnet 5.5 | $0.00009 | $0.00059 |
| Haiku 4.5 | $0.00005 | $0.00030 |
Grade A, and why
safeselect-mongodb scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
SafeSelect MongoDB investigation
- Call
database_infoif the backend is unknown, thenlist_databasesandlist_collectionsusing exact returned names. Stop here for listing requests. - Call
discover_document_schemabefore reading unfamiliar documents. Schema discovery is sampled, not exhaustive; missing fields may exist elsewhere. - Use observed fields in bounded
find_documentsoraggregate_documentscalls. Preserve database/collection policy, filters, projection and small limits. - Pass filter/projection/sort as complete nested JSON objects and pipeline as
one complete array. If a client flattens values, use a JSON-encoded object
or array string. Never send keys like
filter.nameorpipeline[0].$match. - After flattened or missing-filter rejection, preserve the intended constraint
in a complete value. Never substitute
{}or retry the same malformed call. - Follow the returned next step once; report terminal failures and stop.
Read document tools and recovery for analysis, fixtures, indexes and statistics. Never bypass SafeSelect policy using raw MongoDB access.
What ships with it
1 file 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.
- 5d ago First seen · 24 lines · 45 tokens per session scan A a5f168b3fdba
safeselect-mongodb is a skill published in the GitHub repository antonillos/safeselect (0 stars, last pushed 2d ago), licensed MIT. It adds 45 tokens to every session and 296 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-24.
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