# PostgreSQL

**Canonical:** https://apis.io/providers/postgres/  
**Website:** https://www.postgresql.org  
**APIs profiled:** 4

PostgreSQL is a powerful, open-source object-relational database system with over 35 years of active development that has earned a strong reputation for reliability, feature robustness, and performance. It supports advanced SQL features, JSON, full-text search, custom data types, extensions, and transactional DDL. PostgreSQL does not expose a native HTTP REST API; client applications connect via the libpq C client library, JDBC, ODBC, or one of dozens of language-specific drivers using the PostgreSQL wire protocol (default port 5432).

## Kin Score — 10.3 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 10.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (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 | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (4)

- **PostgreSQL Wire Protocol** — The PostgreSQL frontend/backend protocol is the low-level message-based protocol used by all client drivers (libpq, JDBC, ODBC, psycopg, pgx, node-postgres, etc.) to communicate...
- **libpq C Client Library** — libpq is the official C application programmer's interface to PostgreSQL and the underlying library used by most other PostgreSQL client interfaces. It provides connection manag...
- **PostgreSQL JDBC Driver** — The official Type 4 JDBC driver for PostgreSQL enables Java applications to connect to PostgreSQL using the standard JDBC API. It supports connection pooling, prepared statement...
- **PostgreSQL ODBC Driver (psqlODBC)** — The official ODBC driver for PostgreSQL providing Open Database Connectivity for Windows, Linux, and macOS applications including Microsoft Office, Tableau, Power BI, and other ...

## Security (1)

- **Postgres Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Database, Relational Database, SQL, Open-Source, PostgreSQL, Object-Relational, Data Storage

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