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/bobmatnyc/claude-mpm-agents/java-algorithm-patternsnpx skills add bobmatnyc/claude-mpm-agents --skill java-algorithm-patternsgit clone --depth 1 https://github.com/bobmatnyc/claude-mpm-agentsWhat 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 | $0.00018 | $0.02186 |
| Opus 5 | $0.00009 | $0.01093 |
| Sonnet 5 | $0.00004 | $0.00437 |
| Haiku 4.5 | $0.00002 | $0.00219 |
Grade A, and why
java-algorithm-patterns 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
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 284 lines · 18 tokens per session scan A 5de583855fee
java-algorithm-patterns is a skill published in the GitHub repository bobmatnyc/claude-mpm-agents (15 stars, last pushed 2mo ago), with no licence file. It adds 18 tokens to every session and 2,186 once invoked, about $0.0001 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.
Other skills, from other repositories
new-pattern
Guided workflow to create a new pattern following the project template and quality standards. Walks through topic validation, source verification, implementation, exercises, challenge questions, and bilingual docs.
verify-source
Verify all production proof source links in pattern documents. Run automated checks for HTTP status, format, SHA permanence, and line-range content accuracy.
diagnose
Structured debugging loop for exercise tests or build failures. Reproduce → isolate → hypothesize → fix → verify.
adopt-pattern
Use when a developer wants to apply a low-level, systems, or concurrency design pattern in their own code, drawing on the Battle-Tested Patterns catalog of 46 production-proven patterns. Triggers three ways: they name a pattern (ring buffer, circuit breaker, actor model, LRU cache, rate limiter, trie, bloom filter…
audit-pattern
Use when reviewing or auditing an existing codebase against production-proven implementation patterns — checking whether the patterns it already implements (actor model, rate limiter, circuit breaker, LRU cache, write-ahead log, semaphore, ...) actually honor the canonical invariants, whether any are mislabeled (a…
campus-dsa-visualizer
Activate when a student, TA, or instructor asks to visualize the execution of a data structure or algorithm rather than just read its code — trigger phrasings include "visualize this binary search tree", "show me how quicksort partitions this array step by step", "trace this BFS/DFS on the whiteboard", "draw the DP…