Simpro

Simpro (simPRO) is field service management and project/business management software for the trades - electrical, plumbing, HVAC, security, fire, and other contractors. It covers the full workflow of estimating, quoting, job management, scheduling and dispatch, asset maintenance, inventory and catalog, purchasing, timesheets, and invoicing. The Simpro REST API v1.0 exposes these resources over HTTPS, but it is not a shared public API - each API runs on the customer's own Simpro Premium build (host https://your-build.simprosuite.com) and is authenticated with OAuth2 credentials provisioned by that build's administrator. Resources are nested under a company at /api/v1.0/companies/{companyID}/... where companyID is 0 on single-company builds.

Simpro publishes 11 API contracts indexed on the APIs.io network, including Companies API, Cost Centers API, Customers API, and 8 more. Tagged areas include Field Service Management, Trade, Job Management, Project Management, and Scheduling.

The Simpro catalog on APIs.io includes 1 Spectral governance ruleset.

Simpro’s developer surface includes engineering blog, authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.6/100 emerging ▬ flat Agent 25/100 agent aware Front door AI 6/6 dominant Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaidSelf serve

1 published contract

Field Service Management Trade Job Management Project Management Scheduling Inventory Estimating Workforce Software-as-a-Service Contractors

What this lets a business do 6

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Financial Management

BC-200

Cost CentersInvoices

POST /companies/{companyID}/invoices/ GET /companies/{companyID}/setup/accounts/costCenters/

Field Service Management

BC-1050

JobsSchedules

GET /companies/{companyID}/schedules/

Customer Relationship Management

BC-420

Customers

POST /companies/{companyID}/customers/companies/ POST /companies/{companyID}/customers/individuals/

Sales Management

BC-410

Quotes

POST /companies/{companyID}/quotes/

Procurement Management

BC-500

Vendor Orders

POST /companies/{companyID}/vendorOrders/

Inventory Management

BC-530

Stock

GET /companies/{companyID}/storageDevices/{storageDeviceID}/stock/

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 16.6/100 · emerging

Contract Quality 2.3 / 19

Developer Ergonomics 3.2 / 15

Access Clarity 1.2 / 15

Operational Transparency 0.5 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 12.1 — up to +22.0 composite points
Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/simpro/apis.yml: open an issue on github.com/api-evangelist/simpro to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Field Service, Home Services and Trades	builds-on	19.7 (thin)	-	-
Xero App Store (SMB finance, payroll, inventory and invoicing apps built on Xero, by region)	builds-on	19.7 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 11

Individual APIs this provider publishes, each with its own machine-readable definition.

Simpro Companies API

Company information on the build (multi-company aware).

Simpro Cost Centers API

Accounting cost center setup.

Simpro Customers API

Company and individual customers that receive invoices.

Simpro Invoices API

Customer invoicing.

Simpro Jobs API

Job lifecycle - scheduling, stock, assets, forms, and billing.

Simpro Quotes API

Quote creation and management.

Simpro Schedules API

Resource and staff scheduling records.

Simpro Sites API

Customer sites and service locations.

Simpro Stock API

Inventory held on storage devices.

Simpro Vendor Orders API

Purchase orders raised to vendors/suppliers.

Simpro Webhooks API

Webhook subscriptions for build event notifications.

Scroll for all 11

Open Collections 12

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Simpro REST Companies API

OPEN COLLECTION

Simpro REST Companies Cost Centers API

OPEN COLLECTION

Simpro REST Companies Customers API

OPEN COLLECTION

Simpro REST Companies Invoices API

OPEN COLLECTION

Simpro REST Companies Jobs API

OPEN COLLECTION

Simpro REST Companies Quotes API

OPEN COLLECTION

Simpro REST Companies Schedules API

OPEN COLLECTION

Simpro REST Companies Sites API

OPEN COLLECTION

Simpro REST Companies Stock API

OPEN COLLECTION

Simpro REST Companies Vendor Orders API

OPEN COLLECTION

Simpro REST Companies Webhooks API

OPEN COLLECTION

Simpro REST API

OPEN COLLECTION

Scroll for all 12

Simpro API pricing

Not yet checked against Simpro's own pricing page. Compiled by API Evangelist on 2026-07-12 from www.simprogroup.com/; confirm before you rely on a figure.

Plan	Price
Simpro Subscription (Quoted) paid	—
Implementation and Onboarding paid	—
Enterprise / Custom enterprise	—

Plan details, limits and sources →

Rate limits

Overall API Rate: 10 per second requests
Burst Handling: not published requests

Compiled by API Evangelist, not yet checked against Simpro's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Simpro Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Simpro Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Simpro

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Simpro Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Simpro API Rules

61 rules · 56 errors 3 warnings 2 info

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Simpro Authentication

oauth2 · 1 scheme

SECURITY

Simpro Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Simpro Agentic Access

52 operations · 27 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: simpro
url: https://raw.githubusercontent.com/api-evangelist/simpro/refs/heads/main/apis.yml
name: Simpro
kind: company
description: Simpro (simPRO) is field service management and project/business management software for the trades - electrical,
  plumbing, HVAC, security, fire, and other contractors. It covers the full workflow of estimating, quoting, job management,
  scheduling and dispatch, asset maintenance, inventory and catalog, purchasing, timesheets, and invoicing. The Simpro REST
  API v1.0 exposes these resources over HTTPS, but it is not a shared public API - each API runs on the customer's own Simpro
  Premium build (host https://your-build.simprosuite.com) and is authenticated with OAuth2 credentials provisioned by that
  build's administrator. Resources are nested under a company at /api/v1.0/companies/{companyID}/... where companyID is 0
  on single-company builds.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Paid · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/simpro.png
tags:
- Field Service Management
- Trade
- Job Management
- Project Management
- Scheduling
- Inventory
- Estimating
- Workforce
- Software-as-a-Service
- Contractors
tags_raw:
- Field Service Management
- Trades
- Job Management
- Project Management
- Scheduling
- Inventory
- Estimating
- Workforce
- SaaS
- Contractors
created: '2026-07-12'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: simpro:simpro-companies-api
  name: Simpro Companies API
  description: Company information on the build (multi-company aware).
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Companies
  properties:
  - type: OpenAPI
    url: openapi/simpro-companies-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-cost-centers-api
  name: Simpro Cost Centers API
  description: Accounting cost center setup.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Cost Centers
  properties:
  - type: OpenAPI
    url: openapi/simpro-cost-centers-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-customers-api
  name: Simpro Customers API
  description: Company and individual customers that receive invoices.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/simpro-customers-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-invoices-api
  name: Simpro Invoices API
  description: Customer invoicing.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/simpro-invoices-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-jobs-api
  name: Simpro Jobs API
  description: Job lifecycle - scheduling, stock, assets, forms, and billing.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Job
  tags_raw:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/simpro-jobs-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-quotes-api
  name: Simpro Quotes API
  description: Quote creation and management.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Quotes
  properties:
  - type: OpenAPI
    url: openapi/simpro-quotes-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-schedules-api
  name: Simpro Schedules API
  description: Resource and staff scheduling records.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Schedule
  tags_raw:
  - Schedules
  properties:
  - type: OpenAPI
    url: openapi/simpro-schedules-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-sites-api
  name: Simpro Sites API
  description: Customer sites and service locations.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Sites
  properties:
  - type: OpenAPI
    url: openapi/simpro-sites-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-stock-api
  name: Simpro Stock API
  description: Inventory held on storage devices.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Stocks
  tags_raw:
  - Stock
  properties:
  - type: OpenAPI
    url: openapi/simpro-stock-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-vendor-orders-api
  name: Simpro Vendor Orders API
  description: Purchase orders raised to vendors/suppliers.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Vendor Orders
  properties:
  - type: OpenAPI
    url: openapi/simpro-vendor-orders-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
- aid: simpro:simpro-webhooks-api
  name: Simpro Webhooks API
  description: Webhook subscriptions for build event notifications.
  humanURL: https://developer.simprogroup.com/apidoc/
  baseURL: https://{build}.simprosuite.com/api/v1.0
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/simpro-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developer.simprogroup.com/
  - type: APIReference
    url: https://developer.simprogroup.com/apidoc/
common:
- url: https://www.simprogroup.com/blog
  type: Blog
- type: CapabilityMap
  url: capabilities/simpro-capability-edges.yml
  name: Simpro Business Capability Map
- type: AgenticAccess
  url: agentic-access/simpro-agentic-access.yml
- type: DomainSecurity
  url: security/simpro-domain-security.yml
- type: Authentication
  url: authentication/simpro-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/simpro-software
- type: Website
  url: https://www.simprogroup.com/
- type: Documentation
  url: https://developer.simprogroup.com/
- type: Plans
  url: plans/simpro-plans-pricing.yml
- type: RateLimits
  url: rate-limits/simpro-rate-limits.yml
- type: FinOps
  url: finops/simpro-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Simpro API — frequently asked questions

Does Simpro have an API?

Yes. APIs.io lists 11 APIs from Simpro, including Simpro Companies API, Simpro Cost Centers API and Simpro Customers API, and 8 more.

Is there an OpenAPI specification for the Simpro API?

Yes. APIs.io indexes 11 OpenAPI specifications for Simpro, each linked for download from this page.

How do I authenticate with the Simpro API?

Simpro documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Simpro Authentication.

How much does the Simpro API cost?

APIs.io lists 3 pricing plans for Simpro, with each plan's price, limits and inclusions under Pricing on this page.

Is the Simpro API ready for AI agents?

Simpro has a Kin Score of 16.6 out of 100 (emerging) and an Agent Readiness score of 25.4 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

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https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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