Alternatives
x401 alternatives: 11 documented options compared (November 2026)
The main documented alternatives to x401 are 1Password for Agents, Beltic KYA, Concordium Agent Registry, ERC-8004, IBM Agent Identity, Infisical open source Agent Vault, Microsoft Entra Agent ID, ServiceNow AI Passport, Socure Agent Intelligence, Visa Trusted Agent Protocol, and Web Bot Auth.
Last verified 2026-11-03
Earlier records in this comparison were checked from 2026-10-21 through 2026-11-03.
Comparison
A cell reads not documented when the directory has no sourced value. The first row is this listing. The other rows are alphabetical by name.
| Listing | Status | Open source | Tags | License |
|---|---|---|---|---|
| x401This listing | Beta | Yes | credentials, http-401, openid4vp | Apache-2.0. |
| 1Password for Agents | Live | No | credentials, approvals | not documented |
| Beltic KYA | Beta | No | kya, http-signatures, credentials | not documented |
| Concordium Agent Registry | Live | No | registries, verification | not documented |
| ERC-8004 | Designed | Yes | registries, reputation, ethereum | CC0. The EIP says copyright and related rights are waived via CC0. |
| IBM Agent Identity | Live | No | enterprise, oauth, audit | not documented |
| Infisical open source Agent Vault | Beta | Yes | credentials, proxy | The README says the repository is available under the MIT expat license, except the ee directory, which requires an Infisical license. |
| Microsoft Entra Agent ID | Live | No | enterprise, oauth, audit | not documented |
| ServiceNow AI Passport | Designed | No | credentials, enterprise, revocation | not documented |
| Socure Agent Intelligence | Beta | No | credentials, kya | not documented |
| Visa Trusted Agent Protocol | Live | No | http-signatures, merchants, cards, agent-verification | not documented |
| Web Bot Auth | Beta | Yes | http-signatures, bots, draft | Apache-2.0 for the Cloudflare repository. |
How to choose
x401 is compared with the other listings in Identity and trust.
Tags on x401 are credentials, http-401, openid4vp.
Other tags differ across the table.
Status is Live for 1Password for Agents, Concordium Agent Registry, IBM Agent Identity, Microsoft Entra Agent ID, and Visa Trusted Agent Protocol. Status is Beta for Beltic KYA, Infisical open source Agent Vault, Socure Agent Intelligence, Web Bot Auth, and x401. Status is Designed for ERC-8004 and ServiceNow AI Passport.
Open source is yes for ERC-8004, Infisical open source Agent Vault, Web Bot Auth, and x401. Open source is no for 1Password for Agents, Beltic KYA, Concordium Agent Registry, IBM Agent Identity, Microsoft Entra Agent ID, ServiceNow AI Passport, Socure Agent Intelligence, and Visa Trusted Agent Protocol.
License for x401 is Apache-2.0. That field is documented on 4 listings in this comparison and reads not documented on the rest.
The table has 12 rows. The first row is x401. The other 11 rows are alphabetical by name. This page does not score listings.
Listings
- x401This listing
- 1Password for AgentsAlternative
- Beltic KYAAlternative
- Concordium Agent RegistryAlternative
- ERC-8004Alternative
- IBM Agent IdentityAlternative
- Infisical open source Agent VaultAlternative
- Microsoft Entra Agent IDAlternative
- ServiceNow AI PassportAlternative
- Socure Agent IntelligenceAlternative
- Visa Trusted Agent ProtocolAlternative
- Web Bot AuthAlternative
Comparisons
No comparison page pairs x401 with one of these alternatives. Comparisons
Questions
- What are the documented alternatives to x401?
- The main documented alternatives to x401 are 1Password for Agents, Beltic KYA, Concordium Agent Registry, ERC-8004, IBM Agent Identity, Infisical open source Agent Vault, Microsoft Entra Agent ID, ServiceNow AI Passport, Socure Agent Intelligence, Visa Trusted Agent Protocol, and Web Bot Auth.
- How were these alternatives chosen?
- They are the other listings in Identity and trust. A page is built only when that set has at least 3 other listings. Peers are alphabetical by name. The page does not score listings and does not read sponsor records.
- What does the phrase not documented mean?
- The phrase not documented means the directory has no sourced value for that field on that listing. The page does not fill a blank with a guess.
- Which fields are compared?
- The table columns are Status, Open source, Tags, and License.
- Is there a comparison page or a gap note?
- No comparison page pairs x401 with one of these alternatives. x401 has no gap note.
- When was this page updated?
- The newest date among the records used here is 2026-11-03.