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ZipCodeAPI - Zip Code Distance, Radius and Location API

zipcodeapi.com

US and Canadian Zip Code Distance, Radius and Location API.

20
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Agentic Readiness Score
data openapiapi

Agentic Signals

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llms.txt
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ai-plugin.json
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OpenAPI Spec
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Structured API
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AI Bot Access (robots.txt) ↗
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Schema.org Markup
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MCP Server
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Agentic Ready 20/100 

            

        

        

        

        
        

            
OpenAPI Spec (preview)

            
openapi: 3.0.3
info:
  title: ZipCodeAPI
  version: "1.0.0"
  description: |
    REST API for ZIP and postal code lookups, distance calculations, radius queries,
    city-state matching, and more. API key is required in the URL path.

servers:
  - url: https://www.zipcodeapi.com/

paths:

  /rest/{apiKey}/distance.json/{zip1}/{zip2}/{unit}:
    get:
      summary: Distance between two ZIP codes
      parameters:
        - $ref: '#/components/parameters/apiKey'
        - $ref: '#/components/param