x401
Actively maintained
not read yet
Use
- For
- Developers of services and AI agents that must prove identity over plain HTTP requests
- Activity
- Actively maintainedrelease 10 days ago
- Company
- Notarize, Inc. · Domain since 2026site footer · domain registered
- Runs as
- SDK
- Used for
- require identity proof before a route serves an agent
- verify a credential from a trusted issuer on retry
- step up authentication for high-risk actions like wire changes
- Launched on Product Hunt on Jun 25, 2026Product Hunt ↗
- Run byNotarize, Inc.site footer ↗
These are x401's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
Figure and bar: visits/mo, estimate · year: online since
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Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use x401 for?
Sign in to leave a noteWhat is x401?
Defines an HTTP handshake where a route demands signed identity proof and agents return a credential to retry. It is listed in the Atlas under Developer tools and made by Notarize, Inc.
Who is x401 for?
Developers of services and AI agents that must prove identity over plain HTTP requests
Do people use x401?
Emerging.
Is x401 still maintained?
Actively maintained: release 10 days ago.
Who owns x401?
x401 is run by Notarize, Inc., per its site footer (2026-10-23).
What are alternatives to x401?
In Developer tools, by use: Experiential Labs, GitMir, Treg, Scrollport, MintyCode, Sparta.
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