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airflow-java-sdk

Guide for contributing to the Airflow Java SDK (AIP-108). Use this skill whenever a contributor is working in the `java-sdk/` directory or on the Java coordinator in `task-sdk/src/airflow/sdk/coordinators/java/` — whether they want to add a feature, write tests, fix a bug, understand the architecture, or prepare a PR. Trigger on phrases like "Java SDK", "JavaCoordinator", "java-sdk", "annotation processor", "Builder.Task", "BundleBuilder", or anything about running JVM tasks in Airflow.

65

Quality

78%

Does it follow best practices?

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SKILL.md
Quality
Evals
Security

Quality

Content

68%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A well-structured, actionable contributor guide with concrete commands and clear references to authoritative documents. Workflow clarity is the weakest area, lacking explicit validation checkpoints for test and upgrade procedures.

Suggestions

Add an explicit validation step after the schema upgrade (e.g. 'run ./gradlew check and the coordinator tests before preparing the PR') to give the upgrade workflow a feedback loop.

In 'Updating the Python coordinator', replace 'Look at the existing implementation' with the concrete argv assembly pattern or a minimal code skeleton so the guidance is copy-paste ready.

Add a short PR-checklist checkpoint at the end of the test/upgrade workflows (run unit tests, run E2E, verify bundle builds) to make validation explicit.

DimensionReasoningScore

Conciseness

Lean and technical, assuming Claude's competence with specific file paths and commands; only minor passages (e.g. the bundle/manifest explanation) could be tightened slightly.

4 / 5

Actionability

Provides concrete executable commands (./gradlew, breeze, E2E_TEST_MODE invocation, generateJsonSchema2Pojo) and specific file/method targets, though 'Updating the Python coordinator' leans descriptive ('Look at the existing implementation').

4 / 5

Workflow Clarity

Sections are organized and the schema-upgrade steps are sequenced, but there are no explicit validation checkpoints or feedback loops for the test/upgrade workflows.

3 / 5

Progressive Disclosure

Well-organized sections with clearly signaled one-level-deep references to authoritative docs (java.rst, README.md#testing, #contributing) and a useful key-files table; minor organization gaps remain.

4 / 5

Total

15

/

20

Passed

Description

87%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, specific description that clearly states what the skill does and when to trigger it, with concrete trigger phrases and a well-defined niche. Minor room to broaden trigger-term synonyms.

DimensionReasoningScore

Specificity

Names the domain and lists several concrete actions — 'add a feature, write tests, fix a bug, understand the architecture, or prepare a PR' — covering the main contribution activities, with only minor gaps in coverage.

4 / 5

Completeness

Clearly answers both 'what' ('Guide for contributing to the Airflow Java SDK') and 'when' ('Use this skill whenever a contributor is working in... Trigger on phrases like...') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Good keyword coverage with terms a contributor would naturally say ('Java SDK', 'java-sdk', 'annotation processor', 'BundleBuilder', 'running JVM tasks in Airflow'), though a few common synonyms are missing.

4 / 5

Distinctiveness Conflict Risk

Clear niche tied to specific directories, class names (JavaCoordinator, BundleBuilder), and AIP-108; minimal conflict risk with other skills.

5 / 5

Total

18

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
apache/airflow
Reviewed

Table of Contents

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