# Invaluable

**Canonical:** https://apis.io/providers/invaluable/  
**Website:** http://www.invaluable.com/  
**APIs profiled:** 0

Invaluable is the world's leading online marketplace for fine art, antiques and collectibles, founded in 1986. The platform aggregates live and timed auctions from more than 5,000 premier auction houses across 53 countries, giving collectors worldwide a single place to discover, bid on, and win items — with over 260,000 items listed at any time and an archive of 66+ million price records. Invaluable also operates AuctionZip and a Private Label / Connect white-label offering, and provides a partner-only Catalog Upload API that lets auction-management software companies add, edit, and delete lots in timed and live sales directly from their own systems. The company is backed by Insight Partners.

## Kin Score — 15.3 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 15.3).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

## 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 |

## Access

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

## Security (1)

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

## Tags

Company, Auctions, Marketplace, Art, Antiques, Collectibles, E-Commerce, Bidding

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