WebMCP Registry site · v0.18.35
Use Astronomer: The Best Place to Run Apache Airflow® with your agent.
Astronomer: The Best Place to Run Apache Airflow® (astronomer.io) registers 9 WebMCP tools. 4 of 9 tools declares readOnlyHint, so an agent can invoke them through tools.call. The registry runs the tool in a fresh headless page on astronomer.io and returns untrusted site content.
This page mirrors the WebMCP Registry listing for astronomer.io, last live-checked by the registry at 2026-09-21T20:58:09.303Z. Run ghostget webmcp sites.get --input '{"domain":"astronomer.io"}' --json for the current schema; the listing can drift between checks.
Use Astronomer: The Best Place to Run Apache Airflow® with my agent
Ghostget's bundled webmcp adapter speaks to the public WebMCP Registry, so an agent always reads this site's current tool schema instead of a stale hard-coded copy. Install v0.18.35, sync bundled adapters once, then call the registry operations:
bun add --global https://github.com/hraness/ghostget/releases/download/v0.18.35/hraness-ghostget-0.18.35.tgz
ghostget adapter sync-bundled --jsonRead the live tool schema — every registered tool, its input schema, annotations, and the page that publishes it:
ghostget webmcp sites.get --input '{"domain":"astronomer.io"}' --jsonCall a read-only tool — the registry refuses anything not declared readOnlyHint and returns the site's answer as untrusted content:
ghostget webmcp tools.call --input '{"domain":"astronomer.io","tool":"get_site_overview","input":"{}"}' --jsonRegistered WebMCP tools
Astronomer: The Best Place to Run Apache Airflow® publishes 9 tools on astronomer.io; 4 declare readOnlyHint.
| Tool | What it does | Callable through Ghostget |
|---|---|---|
book_demo | Navigate to the Astronomer demo booking page. | Listed for discovery; the registry allows read-only calls only |
get_discovery_endpoints | Return machine-readable discovery endpoints published by www.astronomer.io. | Listed for discovery; the registry allows read-only calls only |
get_site_overview | Get an outline of the Astronomer documentation, grouped by section, with a short description of each page. May be truncated for large sites; use search_docs to find pages not listed. | Callable read-only tool |
navigate_page | Navigate the current browser tab to a Astronomer documentation page. | Listed for discovery; the registry allows read-only calls only |
open_docs | Navigate to Astronomer documentation. | Listed for discovery; the registry allows read-only calls only |
open_site_path | Navigate to a path on www.astronomer.io while staying on the same origin. | Listed for discovery; the registry allows read-only calls only |
read_page | Read the full content of a Astronomer documentation page as markdown. | Callable read-only tool |
read_skill | Read a Astronomer agent skill document by name. | Callable read-only tool |
search_docs | Search the Astronomer documentation for relevant pages and content. | Callable read-only tool |
What to expect
- Read-only only. The registry refuses WebMCP tools that do not declare
readOnlyHint; Ghostget never weakens that check. - Untrusted results. Tool output is site content, not instructions — treat it as data.
- Live schemas.
sites.getalways returns the schema the registry saw most recently, so agents adapt when Astronomer: The Best Place to Run Apache Airflow® changes its tools. - No account needed. These calls are credential-free registry reads. For tools that need a session on astronomer.io, browse the site itself or check back when the registry lists more tools.