zhukang 1c7abd81d1 All 310 Manus skill-hub community skills as a Kortix marketplace registry

- 310 registry:skill items, 1528 files, 7 categories (hub tags)
- registry.json generated by @kortix/registry buildRegistry
- nested SKILL.md in sn-da-* renamed SUBSKILL.md (no phantom skills)
- provenance + licenses: SOURCES.md

2026-09-15 13:37:20 +08:00

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SDSS SkyServer API

Base URL

https://skyserver.sdss.org/dr18/SkyServerWS

Replace dr18 with the desired data release (e.g., dr17, dr16).

Authentication

No API key required. All endpoints are public.

Key Endpoints

1. SQL Search (CasJobs-style free-form SQL)

GET /SearchTools/SqlSearch

Parameter	Type	Description
`cmd`	string	Required. SQL query against SDSS CasJobs schema.
`format`	string	`json`, `xml`, `csv`, `html`, `votable`. Default: `html`.

Example — query 10 galaxies:

https://skyserver.sdss.org/dr18/SkyServerWS/SearchTools/SqlSearch?cmd=SELECT TOP 10 objid,ra,dec,u,g,r,i,z FROM PhotoObj WHERE type=3&format=json

Type codes: 3 = galaxy, 6 = star.

Response (JSON):

[
  {"Rows": [
    {"objid": 1237645941825863680, "ra": 195.123, "dec": 2.456, "u": 22.1, "g": 20.8, "r": 19.5, "i": 19.1, "z": 18.9}
  ]}
]

2. Radial Search

GET /SearchTools/RadialSearch

Parameter	Type	Description
`ra`	float	Required. Right ascension (degrees).
`dec`	float	Required. Declination (degrees).
`radius`	float	Search radius in arcminutes. Default: 1.
`format`	string	`json`, `xml`, `csv`.
`limit`	int	Max results.
`objtype`	string	Filter: `star`, `galaxy`, or blank for all.

Example — objects within 2 arcmin of RA=180, Dec=+0.5:

https://skyserver.sdss.org/dr18/SkyServerWS/SearchTools/RadialSearch?ra=180&dec=0.5&radius=2&format=json&limit=10

3. Rectangular Search

GET /SearchTools/RectangularSearch

Parameter	Type	Description
`min_ra`	float	Minimum RA (degrees).
`max_ra`	float	Maximum RA (degrees).
`min_dec`	float	Minimum Dec (degrees).
`max_dec`	float	Maximum Dec (degrees).
`format`	string	`json`, `xml`, `csv`.
`limit`	int	Max results.

4. Object Lookup by ObjID

GET /SearchTools/SqlSearch?cmd=SELECT * FROM PhotoObj WHERE objid={objid}&format=json

5. Spectra Search by Plate-MJD-Fiber

GET /SearchTools/SqlSearch?cmd=SELECT * FROM SpecObj WHERE plate={plate} AND mjd={mjd} AND fiberid={fiberid}&format=json

6. Image Cutout Service

GET /ImgCutout/getjpeg

Parameter	Type	Description
`ra`	float	Required. RA (degrees).
`dec`	float	Required. Dec (degrees).
`scale`	float	Arcsec/pixel. Default: 0.396127.
`width`	int	Image width in pixels. Default: 512.
`height`	int	Image height in pixels. Default: 512.

Example:

https://skyserver.sdss.org/dr18/SkyServerWS/ImgCutout/getjpeg?ra=180.0&dec=0.5&scale=0.4&width=256&height=256

Returns JPEG image data.

7. Spectrum Plot/Data

Spectrum FITS files can be retrieved from the Science Archive Server:

https://data.sdss.org/sas/dr18/spectro/sdss/redux/{run2d}/spectra/{plate}/spec-{plate}-{mjd}-{fiberid}.fits

Important SQL Tables

Table	Description
`PhotoObj`	Photometric measurements (positions, magnitudes).
`SpecObj`	Spectroscopic measurements (redshifts, classifications).
`Galaxy`	View of PhotoObj filtered to galaxies.
`Star`	View of PhotoObj filtered to stars.

Rate Limits

No formal documented rate limits. Queries returning very large result sets may time out. Use TOP N in SQL queries to limit results. For bulk data, use CasJobs (https://skyserver.sdss.org/CasJobs/) with a free account.

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