Apache Airflow is a platform for defining, scheduling, and monitoring workflows as code, with a scheduler assigning dependent tasks to workers. Teams use it to orchestrate automated data and software pipelines and inspect their progress through a user interface. Its catalogue skills and instructions help agents work with Airflow.
Borrowing it
Nothing to install: this file belongs to apache/airflow. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/apache/airflow/main/.agents/skills/airflow-java-sdk/SKILL.mdgit clone --depth 1 https://github.com/apache/airflowWrote 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/apache/airflow/airflow-java-sdk)<a href="https://agentmods.dev/skills/apache/airflow/airflow-java-sdk"><img src="https://agentmods.dev/badge/skills/apache/airflow/airflow-java-sdk/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/apache/airflow/airflow-java-sdk"><img src="https://agentmods.dev/badge/skills/apache/airflow/airflow-java-sdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00120 | $0.01554 |
| Opus 5.5 | $0.00048 | $0.00622 |
| Sonnet 5.5 | $0.00024 | $0.00311 |
| Haiku 4.5 | $0.00012 | $0.00155 |
Grade A, and why
airflow-java-sdk 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 14d 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 — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Airflow Java SDK contributor guide
The Java SDK lets Airflow tasks execute JVM code (Java, Kotlin, or any JVM language). You are helping a contributor work in one or both of these locations:
java-sdk/— the JVM-side library (Kotlin source, published to Maven)task-sdk/src/airflow/sdk/coordinators/java/— the Python coordinator that launches the JVM subprocess
Read these two documents early in every session — they contain the authoritative reference material:
airflow-core/docs/authoring-and-scheduling/language-sdks/java.rst— user-facing guide: Dag definition, stub TaskHandlers, XCom type mapping, Gradle/Maven steps, coordinator config.java-sdk/README.md— user-facing landing page: installation, quick start, compatibility matrix.java-sdk/DEVELOPMENT.md— contributor guide: repository layout, detailed execution walkthrough, Gradle + Breeze test commands, coding conventions, common tasks, and PR checklist.
SDK package architecture
The JVM-side library is split into two packages with distinct visibility rules:
org.apache.airflow.sdk— public, user-facing API. Classes here (e.g.Client,Bundle,BundleBuilder,Server) are stable contracts that DAG authors and task implementers import directly. Changes to this package are breaking changes.org.apache.airflow.sdk.execution— internal implementation detail. Everything in this package (CoordinatorComm,LogSender,Log,Clientinexecution/, generated schema models, etc.) is not intended to be imported by users. It may change between releases without notice.
When reviewing or writing code, enforce this boundary: user task code and BundleBuilder
subclasses must only import from org.apache.airflow.sdk; any import of
org.apache.airflow.sdk.execution.* in user-facing API surface is a red flag.
Bundle composition and coordinator discovery
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.
- 14d ago Changed · +1 lines 3f8a6d717729
- 24d ago Changed · +1 tokens per session 1249d53ab535
- 1mo ago Changed · +1 lines 122e049be07d
- 2mo ago First seen · 135 lines · 119 tokens per session scan A 8905c19e0945
airflow-java-sdk is a skill published in the GitHub repository apache/airflow (47,377 stars, last pushed yesterday), licensed Apache-2.0. It adds 120 tokens to every session and 1,554 once invoked, about $0.0005 per session on Opus 5.5. 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.
airflow-java-sdk compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| airflow-java-sdkapache/airflow | Skill | 47k | yesterday | Apache-2.0 | A | 120 | Claude Code, Codex |
| dd-code-generationDataDog/pup | Skill | 1.0k | yesterday | Apache-2.0 | A | 16 | Claude Code |
| authoring-java-sdk-tasksastronomer/agents | Skill | 458 | 4d ago | Apache-2.0 | A | 152 | Claude Code |
| configuring-airflow-language-sdksastronomer/agents | Skill | 458 | 4d ago | Apache-2.0 | A | 155 | Claude Code |
| authoring-dagsastronomer/agents | Skill | 458 | 4d ago | Apache-2.0 | A | 93 | Claude Code |
| neqsim-api-patternsequinor/neqsim | Skill | 163 | today | Apache-2.0 | A | 78 | Claude Code, Codex |
| neqsim-production-system-modelingequinor/neqsim | Skill | 163 | today | Apache-2.0 | A | 82 | Codex |