CompSniper
Independent sold-price infrastructure

About CompSniper

CompSniper is an independent eBay sold-price API for resellers, developers, researchers, and inventory teams. It turns noisy completed-listing searches into structured evidence, cleaned price summaries, and integrations that can be used from software or an AI client.

Why it exists

Asking prices are not market evidence

A seller can ask any price. Completed sales show what buyers actually accepted. But a raw eBay search can still mix the desired item with cases, parts, broken units, and wrong models. CompSniper was built to make that evidence usable from an API, dashboard, bulk workflow, or MCP-compatible AI client.

Evidence first

Completed sales, sample sizes, raw-versus-cleaned comparisons, and links to the listings behind the answer.

Built for software

Versioned JSON, clear errors, retry guidance, OAuth, API keys, CSV exports, and predictable response fields.

Multiple markets

One response shape across eight supported eBay marketplaces, with marketplace and currency kept explicit.

Useful before a purchase

Designed to help users inspect comparable sales before sourcing, pricing, or valuing an item.

Transparency

How results are produced

Our methodology explains collection, parsing, relevance decisions, statistics, caching, Best Offer limitations, and how to audit a result.

Read the methodology
Independence

Not affiliated with eBay

CompSniper is an independent product. eBay and its marks belong to eBay Inc. Data is sourced from publicly available completed-listing information and should be reviewed before material decisions.

Read the terms