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 cockroachdb/cockroach --skill mma-investigatorgit clone --depth 1 https://github.com/cockroachdb/cockroachWrote 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/cockroachdb/cockroach/mma-investigator)<a href="https://agentmods.dev/skills/cockroachdb/cockroach/mma-investigator"><img src="https://agentmods.dev/badge/skills/cockroachdb/cockroach/mma-investigator/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/cockroachdb/cockroach/mma-investigator"><img src="https://agentmods.dev/badge/skills/cockroachdb/cockroach/mma-investigator.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 | $0.00047 | $0.03022 |
| Opus 5.5 | $0.00019 | $0.01209 |
| Sonnet 5.5 | $0.00009 | $0.00604 |
| Haiku 4.5 | $0.00005 | $0.00302 |
Grade A, and why
mma-investigator 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 1mo 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
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
2 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.
- 1mo ago First seen · 292 lines · 47 tokens per session scan A 77679dc80fa9
mma-investigator is a skill published in the GitHub repository cockroachdb/cockroach (32,569 stars, last pushed today), with no licence file. It adds 47 tokens to every session and 3,022 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 2026-08-30.
Other skills, from other repositories
graphjin-eval
Create, extend, run, baseline, and diagnose GraphJin agent evaluations through the graphjin eval CLI.
sq
Guides use of the sq CLI to query SQL databases and tabular files with SLQ (sq's jq-like query language) or native SQL, manage sources, choose output formats, and run inspect, diff, and table commands. Use when the user mentions sq, SLQ, wrangling CSV/Excel/JSON/DB data, cross-source joins, or command-line data…
sap-background-jobs
Investigate SAP background jobs, including failed or aborted jobs, job status, job steps, job logs, runtime dumps, TBTCO, TBTCP, and TBTCJOBLOG0-9.
squix
Run SQL queries across databases (Postgres, MySQL, SQLite, etc.) via the squix CLI. Use for running named queries, exploring schema, or parameterized queries. Always use -f for non-interactive output.
connection-troubleshooting
Use this skill when diagnosing PostgreSQL connection issues through PGAutoPilot. Trigger when user asks to: - "I can't connect to the database" - "Connection refused" - "Connection timed out" - "Database is not reachable" - "How do I fix my database URL?" - "The database won't start" - Connection errors…
query-optimization
Use this skill when analyzing, optimizing, or debugging PostgreSQL query performance. Trigger when user asks to: - "Why is this query slow?" - "Help me optimize this query" - "What indexes would improve performance?" - "Analyze the execution plan" - "Find slow queries" - "Tune database performance" - "My app is slow"…