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Developers

Alternative Asset Data, Built for Developers

Ship faster on clean, documented data. Query 19M+ auction records across 16 asset classes over REST, pull JSON or SQL, download bulk exports, or wire the market straight into an AI assistant with our MCP connector.

ALT/FNDATA API and data workspace showing JSON responses and queries

Whether you are shipping a valuation tool, enriching a marketplace, or wiring data into an AI agent, the integration path is short.

REST
API & JSON
16
Asset Classes
Daily
Data Refresh
Use Cases

How Developers Build on ALT/FNDATA

🔌

REST API Integration

Pull real-time and historical auction results over a documented REST API. Filter by brand, model, category, date, and saleroom, and get clean JSON back every time.

  • Documented REST endpoints with JSON responses
  • Filter by brand, model, category, and date
  • USD-normalized prices on every record
  • Keyed access with per-plan quotas
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AI Agents via MCP

Give Claude, ChatGPT, or Gemini live access to the market through our MCP connector. Your agents answer pricing and comparable-sales questions from real data instead of guessing.

  • Hosted MCP server, no data pipeline to build
  • Works with Claude, ChatGPT, and Gemini
  • Live queries against the production tables
  • OAuth connection, scoped to the plan
🗃️

Bulk Data & SQL

Need the whole picture? Take bulk exports or query the full dataset in SQL for analytics, model training, and backfills, without paging through an API a thousand rows at a time.

  • Full-dataset access via SQL
  • Bulk CSV and JSON exports
  • Historical depth back to the 1990s
  • Clean, deduplicated, typed columns
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Valuation & Matching

Add instant pricing to your own product. Match a listing to its closest comparable sales and return a defensible value estimate with the evidence behind it.

  • Comparable-sales matching for any item
  • Value estimates with supporting comps
  • Quality flags on every match
  • Drop-in enrichment for marketplaces
Platform Capabilities

Developer-Ready by Design

Clean data, clear docs, and the delivery method that fits your stack.

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REST API

Documented endpoints, JSON responses, and keyed access with per-plan quotas.

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MCP Connector

A hosted MCP server that puts the live market inside Claude, ChatGPT, and Gemini.

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SQL & Bulk Exports

Query the full dataset in SQL or pull bulk CSV and JSON for analytics and training.

💰

USD-Normalized Pricing

All 27 currencies converted to USD with nearest-date FX, on every record.

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Clean, Typed Data

Deduplicated, classified, and typed columns across 16 asset classes.

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Global Coverage

Results from 850+ vendors across North America, Europe, Asia, and the Middle East.

Start Building on the Market

Get an API key, read the docs, and ship. Full access to the data in a 14-day free trial, no credit card required.

No credit card required