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/astronomer/agents/airflow-pluginsnpx skills add astronomer/agents --skill airflow-pluginsgit clone --depth 1 https://github.com/astronomer/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 | $0.00147 | $0.05698 |
| Opus 5 | $0.00073 | $0.02849 |
| Sonnet 5 | $0.00029 | $0.01140 |
| Haiku 4.5 | $0.00015 | $0.00570 |
Grade A, and why
airflow-plugins scanned grade A with 1 finding 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 3d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
response = requests.post( How it starts
The opening of the file, as written. The whole thing — 592 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Airflow 3 Plugins
Airflow 3 plugins let you embed FastAPI apps, React UIs, middleware, macros, operator buttons, and custom timetables directly into the Airflow process. No sidecar, no extra server.
CRITICAL: Plugin components (fastapi_apps, react_apps, external_views) require Airflow 3.1+. NEVER import
flask,flask_appbuilder, or useappbuilder_views/flask_blueprints— these are Airflow 2 patterns and will not work in Airflow 3. If existing code uses them, rewrite the entire registration block using FastAPI.Security: FastAPI plugin endpoints are not automatically protected by Airflow auth. If your endpoints need to be private, implement authentication explicitly using FastAPI's security utilities.
Restart required: Changes to Python plugin files require restarting the API server. Static file changes (HTML, JS, CSS) are picked up immediately. Set
AIRFLOW__CORE__LAZY_LOAD_PLUGINS=Falseduring development to load plugins at startup rather than lazily.Relative paths always: In
external_views,hrefmust have no leading slash. In HTML and JavaScript, use relative paths for all assets andfetch()calls. Absolute paths break behind reverse proxies.
Before writing any code, verify
- Am I using
fastapi_apps/ FastAPI — notappbuilder_views/ Flask? - Are all HTML/JS asset paths and
fetch()calls relative (no leading slash)? - Are all synchronous SDK or SQLAlchemy calls wrapped in
asyncio.to_thread()? - Do the
static/andassets/directories exist before the FastAPI app mounts them? - If the endpoint must be private, did I add explicit FastAPI authentication?
Step 1: Choose plugin components
A single plugin class can register multiple component types at once.
| Component | What it does | Field |
|---|---|---|
| Custom API endpoints | FastAPI app mounted in Airflow process | fastapi_apps |
| Nav / page link | Embeds a URL as an iframe or links out | external_views |
| React component | Custom React app embedded in Airflow UI | react_apps |
| API middleware | Intercepts all Airflow API requests/responses | fastapi_root_middlewares |
| Jinja macros | Reusable Python functions in DAG templates | macros |
| Task instance button | Extra link button in task Detail view | operator_extra_links / global_operator_extra_links |
| Custom timetable | Custom scheduling logic | timetables |
| Event hooks | Listener callbacks for Airflow events | listeners |
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.
- 3d ago First seen · 592 lines · 147 tokens per session scan A b70b100b03ab
airflow-plugins is a skill published in the GitHub repository astronomer/agents (432 stars, last pushed 16d ago), licensed Apache-2.0. It adds 147 tokens to every session and 5,698 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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