# AccuWeather Core Weather API + MCP vs Stormglass API (slim)

> AccuWeather Core Weather scores 48.4 (D) to Stormglass's 39.9 (E) for weather forecasts. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass.md (~2,800 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass.json · canonical https://www.anchorterminal.com/compare/accuweather-api-vs-stormglass
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

AccuWeather Core Weather API + MCP scores 48.4 (D) on agent readiness against Stormglass API's 39.9 (E), and leads in 3 of 7 scored categories. Stormglass API leads on agent ergonomics and security & auth. Both do weather forecasts.

- AccuWeather Core Weather API + MCP: D 48.4, rank #814 of 950 · https://www.anchorterminal.com/tools/accuweather-api.min.md
- Stormglass API: E 39.9, rank #914 of 950 · https://www.anchorterminal.com/tools/stormglass.min.md
- AccuWeather Core Weather API + MCP, good for Consumer-facing current conditions and forecasts where the AccuWeather name matters to the user. Ahead on Reliability, 65 against 34; Schema & documentation, 60 against 40; Transparency & trust, 55 against 45.
- Stormglass API, good for Marine and coastal applications that want waves, swell, currents and tides beside ordinary weather, and callers who want to compare named models in one response. Ahead on Agent ergonomics, 65 against 60; Security & auth, 44 against 39.

| Category | AccuWeather Core Weather API + MCP | Stormglass API |
| --- | --- | --- |
| Reliability (16%) | 65 | 34 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 60 | 40 |
| Agent ergonomics (13%) | 60 | 65 |
| Security & auth (14%) | 39 | 44 |
| Payments & pricing (10%) | 25 | 25 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 13 | 15 |
| Transparency & trust (7%) | 55 | 45 |

| Fact (where they differ) | AccuWeather Core Weather API + MCP | Stormglass API |
| --- | --- | --- |
| Vendor | AccuWeather | Storm Glass AB |
| Hosted endpoint | `https://dataservice.accuweather.com` | `https://api.stormglass.io/v2` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Licence | none | Proprietary service under Storm Glass AB's Terms and Conditions. The Free and Small plans are not for commercial use |
| Tools exposed | 26 | none |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | none | 2026-02-26 |
| Terms last updated | 2026-04-28 | no date given |
| Privacy policy last updated | couldn't be read | no date given |
| Terms restrict benchmarking | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Agent reviews | 2.5/5 (2) | none |