URI schemes (IANA registry)

Registered URI schemes from the IANA Uniform Resource Identifier (URI) Schemes registry, one document per scheme with its description, registration status (Permanent, Provisional, or Historical), CRI scheme number, well-known URI support, registration template, and citable references. References that name individuals are omitted.

Browse 435 documents Use with your agent

Documents

Showing 313–336 of 435 documents

Document	Version
redis The URI scheme "redis" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
rediss The URI scheme "rediss" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
reload The URI scheme "reload" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
res The URI scheme "res" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
resource The URI scheme "resource" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
rmi The URI scheme "rmi" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
rsync The URI scheme "rsync" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
rtmfp The URI scheme "rtmfp" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
rtmp The URI scheme "rtmp" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
rtsp (Real-Time Streaming Protocol (RTSP)) The URI scheme "rtsp" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Real-Time Streaming Protocol (RTSP)".	v1
rtsps (Real-Time Streaming Protocol (RTSP) over TLS) The URI scheme "rtsps" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Real-Time Streaming Protocol (RTSP) over…	v1
rtspu (Real-Time Streaming Protocol (RTSP) over unreliable datagram transport) The URI scheme "rtspu" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Real-Time Streaming Protocol (RTSP) over…	v1
rttp The URI scheme "rttp" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
sarif The URI scheme "sarif" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
secondlife (query) The URI scheme "secondlife" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "query".	v1
secret-token The URI scheme "secret-token" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
seki The URI scheme "seki" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
service (service location) The URI scheme "service" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "service location".	v1
session The URI scheme "session" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
sftp (query) The URI scheme "sftp" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "query".	v1
sgn The URI scheme "sgn" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
shc The URI scheme "shc" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
shelter The URI scheme "shelter" is a Provisional registration in the IANA Uniform Resource Identifier (URI) Schemes registry.	v1
shttp (Secure Hypertext Transfer Protocol) The URI scheme "shttp" is a Permanent registration in the IANA Uniform Resource Identifier (URI) Schemes registry. It is described as "Secure Hypertext Transfer Protocol".	v1

Source, review, and usage

Published on Koskamo by: Koskamo
Version: 436
Documents: 435 documents
Reviewed: 2026-10-05
Last approved change: 2026-10-05
Agent lookups: 0 in the last 90 days
Reuse: IANA Uniform Resource Identifier (URI) Schemes registry (iana.org/assignments/uri-schemes); registry data reproduced verbatim with references
Review status: Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

Use this dataset from an agent

Agents can query it without an account. POST to /api/v1/retrieve, or connect an MCP client and call koskamo_retrieve with dataset: "uri-schemes".

Set up your agent Read documents as JSON

The JSON endpoint returns document text and source links in pages. Use limit and offset to retrieve more records; total gives the dataset size.

retrieve request

curl --fail-with-body 'https://koskamo.com/api/v1/retrieve' -H 'Content-Type: application/json' --data-raw '{"query":"uri-schemes","dataset":"uri-schemes","top_k":3}'

Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

Published by Koskamo2026-10-05
qb · v1
Published by Koskamo2026-10-05
hxxps · v1
Published by Koskamo2026-10-04
ztdnaid · v1
Published by Koskamo2026-10-04
z39.50s (Z39.50 Session) · v1
Published by Koskamo2026-10-04
z39.50r (Z39.50 Retrieval) · v1
Published by Koskamo2026-10-04
z39.50 (Z39.50 information access) · v1
Published by Koskamo2026-10-04
ymsgr · v1
Published by Koskamo2026-10-04
xri · v1
Published by Koskamo2026-10-04
xrcp · v1
Published by Koskamo2026-10-04
xmpp (Extensible Messaging and Presence Protocol) · v1