# Alt

**Canonical:** https://apis.io/providers/alt/  
**Website:** https://alt.xyz/  
**APIs profiled:** 0

Alt (alt.xyz) is an alternative-asset platform for high-value graded trading cards, founded by Leore Avidar, who previously co-founded the address and print API company Lob. Alt lets collectors and investors research, value, buy, sell, vault, and borrow against slabbed cards in one place, spanning baseball, basketball, football, hockey, soccer, golf, tennis, racing and combat-sports cards as well as Pokemon and other trading-card games. The platform combines a fixed-price marketplace, timed and "Liquid" auctions, an Instant Pricer, market-trend and research views, a physical vault in Delaware that removes sales tax from transactions, and card-backed lending. Its pricing engine, Alt Value, is a machine-learning model tuned by card-pricing specialists that produces a real-time value for every BGS, PSA and SGC card vaulted with Alt, and that value underwrites every trade, loan and product on the platform. Alt raised a $75M Series B in November 2021 led by Spearhead with Seven Seven Six and a group of professional athletes. Alt publishes no public developer program: there is no developer portal, API reference, OpenAPI definition, SDK, CLI, sandbox or self-service API signup. Its programmatic surface is the private backend behind the alt.xyz web and mobile applications (a FastAPI/GraphQL platform service, with the engineering organisation on GitHub as github.com/onlyalt), which integrates payment, identity-verification, authentication, lending-servicing and shipping vendors but is neither documented nor offered to third parties.

## Kin Score — 6.3 / 100 (minimal)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (-0.7 from 7.0).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 4.8 |
| Commercial Clarity | 17.1 |
| Access Clarity | 17.1 |

Regulatory layer — **Payments**: 9.4 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Security (1)

- **Alt Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Collectibles, Trading Cards, Sports Cards, Alternative Assets, Marketplace, Auctions, Asset Valuation, Machine-Learning, Lending, Fintech, E-Commerce

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/alt/). Scores are computed from the provider's own public artifacts under a published rubric.