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 85danf/agent-skills --skill mvn-source-explorergit clone --depth 1 https://github.com/85danf/agent-skillsWrote 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/85danf/agent-skills/mvn-source-explorer)<a href="https://agentmods.dev/skills/85danf/agent-skills/mvn-source-explorer"><img src="https://agentmods.dev/badge/skills/85danf/agent-skills/mvn-source-explorer/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/85danf/agent-skills/mvn-source-explorer"><img src="https://agentmods.dev/badge/skills/85danf/agent-skills/mvn-source-explorer.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 | $0.00170 | $0.02403 |
| Opus 5.5 | $0.00068 | $0.00961 |
| Sonnet 5.5 | $0.00034 | $0.00481 |
| Haiku 4.5 | $0.00017 | $0.00240 |
Grade A, and why
mvn-source-explorer scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
SDK make", "reconstruct the curl this client sends", "how does this library build its How it starts
The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.
mvn-source-explorer
Resolve a Maven dependency to the real Java source behind it, then read and trace it like any other file in the repo.
Never state what a library does without having actually read the relevant class through this skill (or already-open code) -- no inferring behavior from method/class names. When source came from get's decompile path, always say so and note the accuracy caveat (types from outside the jar may show as raw/erased signatures) -- never present decompiled output as if it were the original source.
When to use this skill
- Tracing what a library actually does internally (call chains, HTTP requests it builds, retry/caching behavior) instead of inferring from its public method names
- Following an
importin project code back into the dependency that defines it - Answering "reconstruct the exact request/curl this client sends" or similar reverse-engineering questions about a dependency
- Finding which declared dependency a class name belongs to
- Any of the above for a dependency that lacks a
-sources.jar(falls back to decompiling just that class)
Not for: Gradle/sbt-resolved dependencies (Maven-only), editing library code, or dependencies that were never downloaded to ~/.m2/repository (run a build first).
Prerequisites
python3(stdlib only -- no pip installs).mvnon PATH, optional -- when a dependency has no sources jar locally,getfirst triesmvn dependency:resolve-sources/resolve -Dclassifier=javadocto fetch one before falling back to decompiling. Skipped silently ifmvnisn't on PATH or the download fails.javaon PATH, but only needed the first time a dependency still lacking a sources jar (after the download attempt above) is decompiled. Any Java/Maven project already requires this.- Network access, but only for the CFR decompiler jar download (~2MB, from Maven Central, sha256-pinned, one-time) and the optional
mvn-based sources download above. Never required for a dependency that already has a sources jar locally. - No config file, no credentials, no API keys.
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 · 129 lines · 170 tokens per session scan A 812b56ac740a
mvn-source-explorer is a skill published in the GitHub repository 85danf/agent-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 170 tokens to every session and 2,403 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-26.
mvn-source-explorer compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| mvn-source-explorer85danf/agent-skills | Skill | 2 | 1mo ago | MIT | A | 170 | Claude Code, Codex |
| nullawaychromium/chromium | Skill | 25k | today | BSD-3-Clause | A | 43 | Claude Code, Codex |
| wxjava-troubleshooterbinarywang/WxJava | Skill | 33k | today | Apache-2.0 | A | 65 | Codex |
| performance-smell-detectiondecebals/claude-code-java | Skill | 770 | 9d ago | MIT | A | 51 | Claude Code, Codex |
| neqsim-code-hygieneequinor/neqsim | Skill | 164 | today | Apache-2.0 | A | 120 | Claude Code, Codex |
| 126-java-exception-handlingjabrena/plinth | Skill | 461 | yesterday | Apache-2.0 | A | 144 | Claude Code, Codex |
| jstallparttimenerd/jstall | Skill | 54 | 10d ago | MIT | A | 87 | Claude Code |