# Hobby Card Index

**Canonical:** https://apis.io/providers/hobbycardindex-com/  
**Website:** https://hobbycardindex.com/  
**APIs profiled:** 1

Hobby Card Index is an independently owned sports and trading card pricing and research platform covering sports cards, Pokémon, Magic, and Yu‑Gi‑Oh. It provides market‑intelligence, pricing data, and collection management tools for collectors and dealers. Founded in 2025 by Sean, the service aggregates sold‑listings, grading data, and population reports, offering transparent, non‑affiliated analytics without ties to grading services or marketplaces.

## Kin Score — 44.9 / 100 (developing)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 67.9 |
| Contract Quality | 66.0 |
| Contract Governance | 22.0 |
| Operational Transparency | 14.3 |
| Developer Ergonomics | 49.4 |
| Access Clarity | 34.0 |

Regulatory layer — **Payments**: 22.3 (matched via tags).

## Agent readiness — 30.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | derived |
| 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 |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

Free · Self-serve signup — onboarding: self-serve, pricing: free, trial: no (confidence: medium).

## APIs (11)

- **Hobby Card Index bulk files API** — Daily per-category price files.
- **Hobby Card Index Catalog API** — Sets and the ids the other endpoints take.
- **Hobby Card Index Collection API** — The key owner's own collection.
- **Hobby Card Index Market API** — Market movers, category statistics, the market indexes and the market summary.
- **Hobby Card Index MCP API** — The Model Context Protocol server for AI assistants.
- **Hobby Card Index Prices API** — Current prices by grade, search, and daily price history.
- **Hobby Card Index Sales API** — Verified sold-sale records and active listings.
- **Hobby Card Index Scan API** — Card identification from a photo (commercial plans).
- **Hobby Card Index slabs and certs API** — Cert lookups and population reports.
- **Hobby Card Index Usage API** — The key's plan, limits and usage.
- **Hobby Card Index watch list and webhooks API** — Follow cards, sets or categories and get the daily price changes.

## Agentic access (1)

- **Hobby Card Index Agentic Access** — 31 operations · 9 acting

## Security (2)

- **Hobby Card Index Authentication** — apiKey · 1 scheme
- **Hobby Card Index Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Hobby Card Index Plans Pricing**

## Tags

Cards, Pricing, Sports, Collectibles, Trading

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