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Where the information came from. Everything here is assembled from material a member of the public can reach with a browser and no credentials — the company's own website, developer portal and documentation, the specifications it publishes for public use (OpenAPI, AsyncAPI, JSON Schema,
apis.json,llms.txtand similar), its public repositories, and its public status, pricing and changelog pages. Nothing here is obtained by breaching a system, defeating an access control, or using credentials of any kind.The rating is an independent assessment. The Kin Score and Agent Readiness rating are independently calculated scores of a company's public API artifacts, produced by API Evangelist against a published rubric. They are not certifications, endorsements, security assessments, or audits, and they score published artifacts — not the quality, safety, or security of the software.
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Full detail: Where this data comes from
Alt (alt.xyz) is an alternative-asset platform for high-value graded trading cards. Collectors and investors research, value, buy, sell, vault and borrow against slabbed sports cards, Pokemon and other trading-card games in one place. Alt operates a fixed-price marketplace, timed and "Liquid" auctions, an Instant Pricer, a physical vault in Delaware that removes sales tax from transactions, and card-backed lending — all underwritten by Alt Value, a machine-learning pricing model tuned by card-pricing specialists that produces a real-time value for every BGS, PSA and SGC card vaulted with Alt. The company was founded by Leore Avidar, previously co-founder of the API company Lob, and raised a $75M Series B in November 2021 led by Spearhead with Seven Seven Six.
Alt publishes no public developer program. As of 2026-08-02 there is no developer portal, API
reference, OpenAPI/AsyncAPI/GraphQL contract offered to third parties, SDK, CLI, sandbox, MCP server,
A2A agent card, or self-service API signup. The alt.xyz applications are served by a private platform
backend that is neither documented nor offered externally. No /.well-known/ discovery documents are
published on any Alt host — the alt.xyz origin is a single-page app that answers 200 with its HTML shell
for every unmatched path, which is recorded as a catch-all false positive in well-known/.
- https://alt.xyz/
- https://support.alt.xyz/
- https://github.com/onlyalt
- https://forgeglobal.com/alt_stock/ (secondary-market listing — harvest source)
| Artifact | File |
|---|---|
| APIs.json profile | apis.yml |
| Domain security posture (probed) | security/alt-domain-security.yml |
/.well-known/ discovery probe (none published) |
well-known/alt-well-known.yml |
| llms.txt | llms/alt-llms.txt |