# Columnar

**Canonical:** https://apis.io/providers/columnar/  
**Website:** https://columnar.tech/  
**APIs profiled:** 0

Columnar is a data-infrastructure company advancing open standards for database connectivity. It builds and maintains tooling around ADBC (Apache Arrow Database Connectivity), including dbc — a cross-platform command-line package manager that installs and manages ADBC drivers across macOS, Linux, and Windows and eight programming languages — and databow, a command-line SQL query tool over ADBC. Columnar also ships the DuckDB ADBC community extension and publishes Agent Skills so AI agents can connect to and query databases through ADBC. The company was surfaced as a portfolio company of Bessemer Venture Partners and is built on the Apache Arrow open-source ecosystem.

## Kin Score — 16.7 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 16.7).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 42.9 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 4.3 (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 | yes |
| 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)

- **Columnar Domain Security** — TLSv1.3 · DNSSEC · DMARC

## Tags

Company, Data, ADBC, Apache Arrow, Database Connectivity, Drivers, CLI, DuckDB, Open-Source, Agent Skills

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