# compsapi-com

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

CompsAPI provides a public API delivering eBay sold listings data with up to 1,095 days of price history and the real accepted Best Offer price. It returns up to 240 sales per GET request as JSON, replacing eBay findCompletedItems and Marketplace Insights workflows. The service offers a free tier with an API key, as well as paid plans for higher volume. The company focuses on giving developers easy access to historical eBay sales data for pricing analysis and market research.

## Kin Score — 64.2 / 100 (strong)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 65.0 |
| Contract Quality | 55.9 |
| Contract Governance | 79.1 |
| Operational Transparency | 60.0 |
| Developer Ergonomics | 44.5 |
| Access Clarity | 73.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 34.3 (matched via fallback).

## Agent readiness — 33.9 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | unknown |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | unknown |
| 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 | paginated |
| Operation Distinctiveness | na |

## APIs (4)

- **compsapi-com Comps API** — The Comps API from compsapi-com — 1 operation(s) for comps.
- **compsapi-com Health API** — The Health API from compsapi-com — 1 operation(s) for health.
- **compsapi-com Sold API** — The Sold API from compsapi-com — 1 operation(s) for sold.
- **compsapi-com Usage API** — The Usage API from compsapi-com — 1 operation(s) for usage.

## MCP servers (1)

- **compsapi-com MCP Server** — Remote MCP server at api.compsapi.com.

## Agentic access (1)

- **Compsapi Com Agentic Access** — 4 operations

## Security (2)

- **Compsapi Com Authentication** — 2 schemes
- **Compsapi Com Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Compsapi Com Plans Pricing**

## Tags

Company, eBay, Data, Pricing, Marketplace

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