# MarketParquet

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

MarketParquet provides historical US stock, ETF, and futures market data in columnar Parquet format. It offers split‑adjusted OHLCV bars from 2000 to present, including delisted tickers, with free daily samples and a paid complete archive. The service targets quantitative analysts, backtesters, and data scientists needing high‑performance, ready‑to‑load datasets for pandas, Polars, or DuckDB.

## Kin Score — 43.4 / 100 (developing)

Scored 2026-10-23 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 48.2 |
| Contract Quality | 52.4 |
| Contract Governance | 22.0 |
| Operational Transparency | 15.8 |
| Developer Ergonomics | 21.4 |
| Access Clarity | 76.3 |

Regulatory layer — **Securities & Market Data**: 28.7 (matched via tags).

## Agent readiness — 24.6 (agent-aware)

| 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 | no |
| Event Surface Described | no |
| Agent Skills | no |
| 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 |

## APIs (1)

- **MarketParquet API V1 API** — The api-v1 API from MarketParquet — 4 operation(s) for api-v1.

## Agentic access (1)

- **Marketparquet Agentic Access** — 4 operations

## Security (2)

- **Marketparquet Authentication** — http · 1 scheme
- **Marketparquet Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Marketparquet Plans Pricing**

## Tags

Company, Finance, Data, Market Data

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