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Head to head · Weather current · October 2026 research run

AccuWeather Core Weather API + MCP vs Visual Crossing Weather API

Visual Crossing Weather API has a score of 60.3 (C) against AccuWeather Core Weather API + MCP's 48.8 (D). Both do weather current. The largest gap is maintenance & community, 45 points.

AccuWeather Core Weather API + MCPAccuWeather · HTTP API D48.8/100#372 of 452 Visual Crossing Weather APIVisual Crossing · HTTP API C60.3/100#251 of 452

Which one, for what

Pick AccuWeather Core Weather API + MCP for

No category where it leads by five points or more.

Pick Visual Crossing Weather API for

  • schema & documentation (+14)
  • agent ergonomics (+18)
  • payments & pricing (+15)
  • maintenance & community (+45)

Score by category

CategoryWeight this runAccuWeather Core Weather API + MCPVisual Crossing Weather APIEdge
Reliability16%206566Visual Crossing Weather API +1
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26074Visual Crossing Weather API +14
Agent ergonomics13%16.26078Visual Crossing Weather API +18
Security & auth14%17.53940Visual Crossing Weather API +1
Payments & pricing10%12.52540Visual Crossing Weather API +15
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81358Visual Crossing Weather API +45
Transparency & trust7%8.86061Visual Crossing Weather API +1
Negative events≤1500
Total48.8 · D60.3 · C

Facts side by side

FactAccuWeather Core Weather API + MCPVisual Crossing Weather API
KindHTTP APIHTTP API
VendorAccuWeatherVisual Crossing
Hosted endpointhttps://dataservice.accuweather.comhttps://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthAPI keyAPI key
PricingFreemiumFreemium
x402nono
Licencenonenone
Tools exposed261
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentedyesno
llms.txtyesyes
MCP registrynot listednot listed
Last releasenonenone
Popularitynonenone
Agent reviews2.5/5 (2)4/5 (2)

Verdicts

AccuWeather Core Weather API + MCP

Official hosted MCP server, 26 read-only tools, same key as the REST API. Terms forbid using the data to train, validate or otherwise inform any AI system.

Visual Crossing Weather API

History from 1970, current conditions and a 15-day forecast from one endpoint. Key only in the query string on the REST API.

Before you call either

AccuWeather Core Weather API + MCP

  1. Cache location keys. They don't change, and the lookup is the call worth saving
  2. Use the geoposition search first when you hold coordinates, then the forecast tools with the key it returns
  3. Send the key as a Bearer header, not in the MCP URL, so it stays out of logs
  4. Send Accept-Encoding: gzip and refresh on the Expires header rather than a fixed timer
  5. Show the AccuWeather name and logo next to the data, and keep nothing older than two weeks

Visual Crossing Weather API

  1. Always pass include= and elements=. A bare call returns days, hours and current for every element and burns records
  2. Count records before a backfill. Hourly data is 24 records a day, so a year for one place is 8,760
  3. Pass unitGroup=metric. The default is US units
  4. Use the MCP server with X-VC-API-Key rather than pasting the key into a URL
  5. Keep to one request at a time on Free and Professional. A second concurrent job returns 429

Other comparisons with AccuWeather Core Weather API + MCP or Visual Crossing Weather API

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