aid: bigchange
url: https://raw.githubusercontent.com/api-evangelist/bigchange/refs/heads/main/apis.yml
name: BigChange
kind: company
description: BigChange is an all-in-one field service and job management platform
  (CRM, job scheduling, live tracking, a mobile workforce app, job finance, and
  business intelligence) known as JobWatch. Its modern REST API - the BigChange DX
  API at https://api.bigchange.com - lets developers manage jobs, contacts and
  persons, quotes, invoices and purchase orders, stock, resources, users and
  vehicles, worksheets, and assets, plus subscribe to webhooks. Requests are
  authenticated with a Bearer JWT access token (obtained through BigChange's
  authentication proxy from a developer-portal API key) and scoped with a required
  Customer-Id header.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Field Service Management
- Job Management
- Scheduling
- Workforce Management
- Fleet
- CRM
- SaaS
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.19'
apis:
- aid: bigchange:bigchange-jobs-api
  name: BigChange Jobs API
  tags:
  - Jobs
  - Scheduling
  - Field Service
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/jobs
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/rest/api-reference
    type: Documentation
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/jobs
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  - url: collections/bigchange.postman_collection.json
    type: PostmanCollection
  - url: collections/bigchange.opencollection.json
    type: OpenCollection
  description: Create, retrieve, update, schedule, start, cancel, and report on jobs
    and job groups. Manage job line items, job stock, worksheets and answers,
    constraints, flags, and status history for field-service work orders.
- aid: bigchange:bigchange-contacts-persons-api
  name: BigChange Contacts and Persons API
  tags:
  - Contacts
  - CRM
  - Persons
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/contacts
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/contacts
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  - url: collections/bigchange.postman_collection.json
    type: PostmanCollection
  description: Manage customer contacts and contact groups, put contacts on/off
    stop, set site access hours, and manage persons together with their data-consent
    history - the CRM core of the JobWatch platform.
- aid: bigchange:bigchange-finance-api
  name: BigChange Finance API
  tags:
  - Invoices
  - Quotes
  - Purchase Orders
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/invoices
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/invoices
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  - url: collections/bigchange.postman_collection.json
    type: PostmanCollection
  description: Manage invoices, quotes, purchase orders, and sales opportunities and
    their line items - create and update documents, mark invoices paid/sent, accept
    or reject quotes, and generate invoice PDFs under /v1/finance.
- aid: bigchange:bigchange-stock-api
  name: BigChange Stock and Inventory API
  tags:
  - Stock
  - Inventory
  - Parts
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/stock
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/stock
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  description: Manage stock items, stock details and suppliers, and read stock
    movement records - the parts and inventory used to complete field-service jobs.
- aid: bigchange:bigchange-resources-fleet-api
  name: BigChange Resources, Users and Vehicles API
  tags:
  - Resources
  - Fleet
  - Vehicles
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/resources
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/resources
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  description: Manage the mobile workforce and fleet - resources and resource groups,
    back-office users, and vehicles - that jobs are scheduled and dispatched against.
- aid: bigchange:bigchange-notes-worksheets-api
  name: BigChange Notes and Worksheets API
  tags:
  - Notes
  - Worksheets
  - Forms
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/notes
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/notes
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  description: Create and manage notes and note types with progress history, and
    read worksheets, worksheet groups, and worksheet questions used to capture
    structured job data on the JobWatch mobile app.
- aid: bigchange:bigchange-reference-data-api
  name: BigChange Reference Data API
  tags:
  - Reference Data
  - Lookups
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/reference-data
  baseURL: https://api.bigchange.com
  properties:
  - url: https://developers.bigchange.com/docs/category/rest/api-reference/v-2-0-0/reference-data
    type: APIReference
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  description: Read-only lookups that back the rest of the platform - VAT codes,
    nominal codes, department codes, product categories, job types, note types, and
    sales-opportunity stages and probabilities.
- aid: bigchange:bigchange-asset-management-api
  name: BigChange Asset Management API
  tags:
  - Assets
  - Service Agreements
  - Maintenance
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/rest/api-reference
  baseURL: https://api.bigchange.com
  properties:
  - url: https://api.bigchange.com/swagger/asset-management/v1/swagger.json
    type: OpenAPI
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  description: Manage customer assets and their categories, attributes, images, and
    service schedules, plus service agreements and their activities - under the
    /asset-management/v1 path. Published as its own OpenAPI document by BigChange.
- aid: bigchange:bigchange-webhooks-api
  name: BigChange Webhooks API
  tags:
  - Webhooks
  - Events
  - Subscriptions
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.bigchange.com/docs/rest/api-reference
  baseURL: https://api.bigchange.com
  properties:
  - url: https://api.bigchange.com/swagger/webhooks/v1/swagger.json
    type: OpenAPI
  - url: openapi/bigchange-openapi.yml
    type: OpenAPI
  description: List webhook subscriptions and inspect, retry, or clear failed
    webhook deliveries under /webhooks/v1. Webhooks are outbound HTTP callbacks
    (server-to-consumer POST), not a WebSocket transport.
common:
- type: AgenticAccess
  url: agentic-access/bigchange-agentic-access.yml
- type: DomainSecurity
  url: security/bigchange-domain-security.yml
- type: Authentication
  url: authentication/bigchange-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/bigchange
- type: Website
  url: https://www.bigchange.com
- type: Documentation
  url: https://developers.bigchange.com/docs/rest/api-reference
- type: Plans
  url: plans/bigchange-plans-pricing.yml
- type: RateLimits
  url: rate-limits/bigchange-rate-limits.yml
- type: FinOps
  url: finops/bigchange-finops.yml
- url: https://www.bigchange.com/blog/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com