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 DauQuangThanh/hanoi-rainbow --skill jcl-migration-analyzergit clone --depth 1 https://github.com/DauQuangThanh/hanoi-rainbowWrote 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/dauquangthanh/hanoi-rainbow/jcl-migration-analyzer)<a href="https://agentmods.dev/skills/dauquangthanh/hanoi-rainbow/jcl-migration-analyzer"><img src="https://agentmods.dev/badge/skills/dauquangthanh/hanoi-rainbow/jcl-migration-analyzer/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/dauquangthanh/hanoi-rainbow/jcl-migration-analyzer"><img src="https://agentmods.dev/badge/skills/dauquangthanh/hanoi-rainbow/jcl-migration-analyzer.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 | $0.00121 | $0.02798 |
| Opus 5 | $0.00060 | $0.01399 |
| Sonnet 5 | $0.00024 | $0.00560 |
| Haiku 4.5 | $0.00012 | $0.00280 |
Grade A, and why
jcl-migration-analyzer 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 323 lines — stays where its author put it; the contents beside it link to each section on GitHub.
JCL Migration Analyzer
Analyzes legacy JCL scripts for migration to modern batch processing and workflow orchestration systems like Spring Batch, Apache Airflow, Kubernetes Jobs, or shell scripts.
Overview
This skill provides comprehensive analysis and migration planning for JCL (Job Control Language) batch processing systems. It extracts job structures, converts JCL constructs to modern workflow patterns, maps data dependencies, and generates implementation-ready migration strategies.
Key Migration Focus: JCL to modern orchestration with proper handling of COND logic inversion, data dependencies (DD statements), GDG generations, procedures (PROCs), and batch workflow patterns.
When to Use This Skill
Use this skill when:
- Analyzing JCL job files (.jcl, .JCL) for modernization
- Planning migration from mainframe batch processing to modern workflow systems
- Converting JCL job steps to Spring Batch, Apache Airflow, or shell scripts
- Understanding JCL COND logic and conditional execution patterns
- Mapping JCL data sets (DD statements) to modern file operations
- Extracting JCL procedures (PROCs) and symbolic parameters
- Generating workflow definitions for orchestration platforms
- Estimating complexity and effort for JCL migration projects
- Creating migration documentation and strategy reports
- Modernizing mainframe batch jobs to cloud-native workflows
- User mentions: JCL analysis, mainframe job migration, batch workflow conversion, COND logic, job steps, procedures, workflow orchestration
Core Capabilities
1. Job Analysis
Extract job structure (JOB card), step sequences, program invocations (EXEC PGM/PROC), conditional logic (COND, IF/THEN/ELSE), return codes, data sets (DD statements), resource requirements, and symbolic parameters.
2. Data Dependency Mapping
Extract input/output datasets, temporary datasets, GDG handling, concatenation, DISP parameters, and data flow between steps.
3. Procedure Analysis
Parse PROC definitions, symbolic parameters, PROC overrides, nested procedures, INCLUDE statements, and JCLLIB references.
What ships with it
13 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.
- assets/java-class-template.java 2.3 KB
- assets/migration-report-template.md 5.0 KB
- references/messaging-integration.md 11 KB
- references/performance-patterns.md 5.8 KB
- references/pseudocode-common-rules.md 2.3 KB
- references/pseudocode-jcl-rules.md 3.6 KB
- references/testing-strategy.md 13 KB
- references/transaction-handling.md 11 KB
- scripts/analyze-dependencies.ps1 5.1 KB runs code
- scripts/analyze-dependencies.sh 5.1 KB runs code
- scripts/estimate-complexity.py 8.2 KB runs code
- scripts/extract-structure.py 7.1 KB runs code
- scripts/generate-java-classes.py 9.4 KB runs code
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.
- 11d ago First seen · 323 lines · 121 tokens per session scan A 8e2fc681d92c
jcl-migration-analyzer is a skill published in the GitHub repository DauQuangThanh/hanoi-rainbow (16 stars, last pushed 7mo ago), licensed MIT. It adds 121 tokens to every session and 2,798 once invoked, about $0.0006 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 2026-08-31.
Other skills, from other repositories
spec-driven-development
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ospec-change
Create or advance a lightweight OSpec change using the classic fast workflow.
artifact-conventions
Defines preservation, format, and section rules for SDD specification artifacts (spec.md, plan.md, tasks.md, checklists). Use when editing feature-artifact files under specs/ / to prevent accidental corruption of cross-referenced IDs, priorities, and gating state.
plan-authoring
Reference material for writing implementation plans (technical context, architecture decisions, data models, API contracts, project-instructions alignment). Loaded on demand by plan-feature; not directly invokable.
task-generation
Reference material with the canonical task-format grammar and decomposition rules for plan-to-tasks expansion. Loaded on demand by generate-tasks; not directly invokable.
adr-authoring
Defines the canonical MADR format, lifecycle rules, numbering policy, and SAD catalog contract for standalone ADRs under specs/adrs/.