# Catchback Cards

**Canonical:** https://apis.io/providers/catchback-cards/  
**Website:** https://catchbackcards.com  
**APIs profiled:** 0

Catchback Cards (CatchBack) is a Y Combinator (Winter 2026) company building a mobile and web platform for trading card collectors, focused on Pokemon and sports cards. Collectors open digital mystery packs to receive physical cards, receive instant buyback offers paid out via Venmo or PayPal, and trade cards through a $1 marketplace. The platform differentiates on transparency: it lets creators build custom mystery packs with personalized chases and customized odds using cryptographically trusted tooling, and publishes open-source verification so collectors can independently validate pack randomness and odds. The company launched its iOS app on January 25, 2026 and is a seven-person team based in San Francisco. Catchback Cards is a consumer application and does not currently publish a public API, developer portal, or OpenAPI definition; this profile is maintained in the API Evangelist network as a portfolio lead and is enriched only with independently verifiable facts.

## Kin Score — 1.9 / 100 (minimal)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 1.9).

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

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 |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Catchback Cards Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Trading Cards, Collectibles, Marketplace, Consumer, Mobile, Payments, Y Combinator

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