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OpenAPI Specification

openapi: 3.2.0
info:
  title: NextBillion.ai Optimization API
  version: '2026-10-13'
  description: 'GENERATED FROM DOCUMENTATION by API Evangelist on 2026-10-13: 18 operation(s) read from 8 public documentation page(s) (each operation names its page in x-source). This is not the provider''s published contract; NextBillion.ai has published no machine-readable contract that the pipeline could find. Engine: local.'
  x-evidence-tiers:
    code-example: 5
    documentation: 13
    pages-with-code: 5
    pages-read: 8
  x-generated-from: documentation
  x-provenance: generated
  x-authored-by: API Evangelist
  x-generated: '2026-10-13'
  x-generator: generate-contract-from-docs.py
  x-engine: local
  x-sources:
  - https://docs.nextbillion.ai/routing/directions-api
  - https://docs.nextbillion.ai/routing/navigation-api
  - https://docs.nextbillion.ai/optimization/route-optimization-api
  - https://docs.nextbillion.ai/routing/distance-matrix-api/synchronous
  - https://docs.nextbillion.ai/routing/isochrone-api
  - https://docs.nextbillion.ai/routing/hours-of-service-api
  - https://docs.nextbillion.ai/optimization/driver-assignment-api
  - https://docs.nextbillion.ai/routing/distance-matrix-api/asynchronous
servers:
- url: https://api.nextbillion.io
tags:
- name: Optimization
paths:
  /optimization/driver-assignment/v1:
    post:
      operationId: post_optimization_driver_assignment_v1
      tags:
      - Optimization
      summary: The Driver Assignment API’s synchronous method caters to quick, near real‑time…
      x-source: https://docs.nextbillion.ai/optimization/driver-assignment-api
      responses:
        '201':
          description: Success (status as documented)
      x-evidence:
        kind: documentation
  /optimization/driver-assignment/v1/async:
    get:
      operationId: get_optimization_driver_assignment_v1_async
      tags:
      - Optimization
      summary: To obtain the calculated assignment solution, you must provide the specific id…
      x-source: https://docs.nextbillion.ai/optimization/driver-assignment-api
      responses:
        '200':
          description: Success (status as documented)
      x-evidence:
        kind: documentation
    post:
      operationId: post_optimization_driver_assignment_v1_async
      tags:
      - Optimization
      summary: POST /optimization/driver-assignment/v1/async
      x-source: https://docs.nextbillion.ai/optimization/driver-assignment-api
      parameters:
      - name: key
        in: query
        required: false
        schema:
          type: string
      responses:
        '201':
          description: Success (status as documented)
      x-evidence:
        kind: code-example
        language: curl
        snippet: "curl --location 'https : //api.nextbillion.io/optimization/driver-assignment/v1?key=<your_api_key>' --header 'Content-Type: application/json; charset=utf-8' --data '{ 2 \"filter\" : { ... } , 3 \"options\" : { ... } , 4 \"orders\" : [ ... ] , 5 \"vehicles\" : [ ... ] 6 } ' Expand \n Sample Response \n 1 { 2 \"status\" : 200 , 3 \"result\" : { 4 \"trips\" : [ ... ] , 5 \"unassigned_orders\" : [ ... ] , 6 \"available_"
  /optimization/re_optimization:
    post:
      operationId: post_optimization_re_optimization
      tags:
      - Optimization
      summary: Re-optimize An Existing Solution
      x-source: https://docs.nextbillion.ai/optimization/route-optimization-api
      responses:
        '201':
          description: Success (status as documented)
      x-evidence:
        kind: documentation
  /optimization/v2:
    post:
      operationId: post_optimization_v2
      tags:
      - Optimization
      summary: Build an Optimization Request
      x-source: https://docs.nextbillion.ai/optimization/route-optimization-api
      responses:
        '201':
          description: Success (status as documented)
      x-evidence:
        kind: documentation
  /optimization/v2/result:
    get:
      operationId: get_optimization_v2_result
      tags:
      - Optimization
      summary: Retrieve Optimized Solution
      x-source: https://docs.nextbillion.ai/optimization/route-optimization-api
      responses:
        '200':
          description: Success (status as documented)
      x-evidence:
        kind: documentation