# National Geospatial-Intelligence Agency

**Canonical:** https://apis.io/providers/national-geospatial-intelligence-agency/  
**Website:** https://www.nga.mil/  
**APIs profiled:** 4

The National Geospatial-Intelligence Agency (NGA) is a combat support agency within the U.S. Department of Defense that provides geospatial intelligence in support of national security. Through its Office of Geomatics, NGA publishes the Earth-Info portal, which exposes a REST API in OpenAPI format for downloading GPS ephemeris products, Earth Orientation Parameter Predictions (EOPP), Navdata clock state files, and short-term orbit prediction products. NGA also maintains the WGS 84 reference frame, EGM2008 gravitational model, and the GEOTRANS coordinate conversion tool.

## Kin Score — 21.5 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 21.5).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 49.7 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Government & Public Sector**: 11.1 (matched via tags).

## Agent readiness — 24.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (4)

- **National Geospatial-Intelligence Agency Clock API** — Navdata clock state files.
- **National Geospatial-Intelligence Agency EOPP API** — Earth Orientation Parameter Predictions in multiple formats.
- **National Geospatial-Intelligence Agency Ephemeris API** — GPS ephemeris products, including Center of Mass and Antenna Phase Center variants.
- **National Geospatial-Intelligence Agency Orbit API** — Short-term orbit prediction products.

## Agentic access (1)

- **National Geospatial Intelligence Agency Agentic Access** — 6 operations

## Security (1)

- **National Geospatial Intelligence Agency Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **National Geospatial Intelligence Agency Plans Pricing**

## Tags

Federal-Government, Geospatial, Intelligence, Defense, Geomatics

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