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/motlin/claude-code-plugins/maven-clinpx skills add motlin/claude-code-plugins --skill maven-cligit clone --depth 1 https://github.com/motlin/claude-code-pluginsWrote 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/motlin/claude-code-plugins/maven-cli)<a href="https://agentmods.dev/skills/motlin/claude-code-plugins/maven-cli"><img src="https://agentmods.dev/badge/skills/motlin/claude-code-plugins/maven-cli.svg" alt="Measured on agentmods" 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 | $0.00069 | $0.00630 |
| Opus 5 | $0.00034 | $0.00315 |
| Sonnet 5 | $0.00014 | $0.00126 |
| Haiku 4.5 | $0.00007 | $0.00063 |
Grade A, and why
maven-cli 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 27 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Avoid -o / --offline
Do not pass -o (or --offline) to mvn by default.
Why: In multi-worktree or multi-branch Maven projects, ~/.m2/repository accumulates artifacts installed by other worktrees and branches. Those cached artifacts may have been compiled against different transitive versions than the current branch's POM resolves. Running with -o makes Maven trust the cached install for sibling modules instead of rebuilding them from source. The result is a phantom compile error caused by local-cache mismatch — for example, a sibling module compiled against Dropwizard 3 leaking io.dropwizard.core.ConfiguredBundle references into a Dropwizard 2 build. The error looks like an upstream defect but the actual cause is local cache pollution from another branch.
How to apply: When verifying that a module compiles after a change, use mvn -pl <module> -am compile (or clean install -DskipTests) instead. The -am ("also-make") flag rebuilds upstream sibling modules from the current worktree's source, invalidating any stale cache entries.
If -am itself fails on an upstream module, fix that root cause. Do not bypass it with -o.
Reserve -o for situations where the cache is known to be in sync with HEAD (for example, immediately after a successful mvn install from the same branch) or where the goal is specifically to test offline behavior.
Don't use stash-and-rerun to acquit your diff
When a build fails after a change, do not run git stash && mvn ... and conclude from a matching error that the diff is innocent. Both states resolve dependencies from the same ~/.m2 cache, so the comparison is not independent. A polluted cache will fail identically with or without the diff applied — and the matching error then becomes false evidence that the change is fine.
How to apply: Reproduce against a freshly built dependency graph. The cheapest reliable form is mvn -pl <module> -am clean install -DskipTests. If that succeeds, the earlier failure was local-cache pollution and the diff is fine. If it still fails, the failure is real and needs fixing in the diff.
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.
- yesterday First seen · 27 lines · 69 tokens per session scan A d21200f42777
maven-cli is a skill published in the GitHub repository motlin/claude-code-plugins (15 stars, last pushed today), licensed Apache-2.0. It adds 69 tokens to every session and 630 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 2026-09-04.
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