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Cobol

Skill G1Joshi/Agent-Skills/skills/languages/cobol

COBOL for mainframe and legacy business systems. Use for .cob files.From its SKILL.md

Install
npx -y skills add G1Joshi/Agent-Skills --skill cobol

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

  • 12 stars12 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

1.0 KB, 282 tokens by cl100k_base, as published. Nobody here has run it

COBOL

COBOL runs 70% of the world's business transactions. Modern COBOL (GnuCOBOL 3.2 / IBM Enterprise COBOL) supports JSON, XML, and Object-Oriented features.

When to Use

  • Mainframes: The backbone of banking/insurance systems (CICS/IMS).
  • Legacy Migration: Moving logic to Linux/Cloud using GnuCOBOL.
  • Decimal Arithmetic: Native fixed-point math (PICTURE 9V99) is unmatched for currency.

Core Concepts

Divisions

IDENTIFICATION, ENVIRONMENT, DATA, PROCEDURE.

Picture Clause

01 SALARY PIC 9(5)V99. Defines data layout precisely.

PERFORM

The main control flow loop.

Best Practices (2025)

Do:

  • Use GnuCOBOL: For local development on Mac/Linux.
  • Use VS Code: With the bitlang.cobol extension.
  • Unit Test: Use COBOL Check or ZUnit.

Don't:

  • Don't use GO TO: Use PERFORM and structured programming.

References

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

Keep looking

Skills are one crate of 325,949. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.