SimplyBook.me

SimplyBook.me provides an online appointment booking system for businesses of all sizes, offering features such as calendar synchronization, payment processing, AI voice booking, and extensive integrations with tools like Zapier, Facebook, and Instagram. The platform serves industries ranging from beauty and wellness to education, medical services, and fitness, delivering customizable booking pages, automated reminders, and analytics to help businesses streamline client scheduling and improve operational efficiency.

SimplyBook.me is listed with 2 APIs on the APIs.io network, including Admin API, and 1 more. Tagged areas include Scheduling, Software-as-a-Service, Booking, Integration, and Automation.

The SimplyBook.me catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

SimplyBook.me’s developer surface includes engineering blog, getting-started guide, documentation, API reference, pricing, signup flow, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.5/100 thin ▼ -8.9 Agent 30/100 agent ready Heartbeat 58/100 slowing Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

2 APIs

Scheduling Software-as-a-Service Booking Integration Automation

Kin Score

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

Composite quality — 28.5/100 · thin

Contract Quality 3.7 / 19

Developer Ergonomics 3.4 / 15

Access Clarity 7.3 / 15

Operational Transparency 0.5 / 10

Contract Governance 2.0 / 9

Discoverability 4.6 / 8

Regulatory Posture 2.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 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 0 / 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 6 / 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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 19.9 — up to +20.0 composite points
Developer Ergonomics scores 22.6 — up to +15.5 composite points
Operational Transparency scores 5.3 — up to +12.3 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/simplybook-me/apis.yml: open an issue on github.com/api-evangelist/simplybook-me 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 →

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.

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

SimplyBook.me API

API documentation for SimplyBook.me

SimplyBook.me Admin API

The Admin API from SimplyBook.me — 2 operation(s) for admin.

SimplyBook.me API pricing

Prices published by SimplyBook.me, read 2026-10-13 from simplybook.me/en/pricing.

Plan	Price
Free	$0 per month, billed annually
Basic	$11.9 per month, billed annually
Standard	$24.9 per month, billed annually
Premium	$49.9 per month, billed annually
Enterprise	Custom

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Simplybook Me Plans Pricing

5 plans

PLANS

Service Levels 1

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

SimplyBook.me

SLA

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Simplybook Me Context

2 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

SimplyBook.me API Rules

12 rules · 10 errors 1 warnings 1 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

PostAdminWebhooksRequest

2 properties

JSON SCHEMA

PostAdminWebhooksResponse

5 properties

JSON SCHEMA

Security Posture 1

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

Simplybook Me Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

Postman

Postman

Access & Security 2

Authentication, authorization, and security posture

Security

Security

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

TermsOfService

TermsOfService

Pricing

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: simplybook-me
name: SimplyBook.me
description: SimplyBook.me provides an online appointment booking system for businesses of all sizes, offering features such
  as calendar synchronization, payment processing, AI voice booking, and extensive integrations with tools like Zapier, Facebook,
  and Instagram. The platform serves industries ranging from beauty and wellness to education, medical services, and fitness,
  delivering customizable booking pages, automated reminders, and analytics to help businesses streamline client scheduling
  and improve operational efficiency.
url: https://raw.githubusercontent.com/api-evangelist/simplybook-me/refs/heads/main/apis.yml
x-type: company
x-source: harvest:tag-qc
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-13 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  probe_state: unreadable
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-13'
modified: '2026-10-13'
tags:
- Scheduling
- Software-as-a-Service
- Booking
- Integration
- Automation
tags_raw:
- Scheduling
- SaaS
- Booking
- Integration
- Automation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/simplybook-me-plans-pricing.yml
- type: Spectral
  url: rules/simplybook-me-rules.yml
- type: JSONLD
  url: json-ld/simplybook-me-context.jsonld
- type: Vocabulary
  url: vocabulary/simplybook-me-vocabulary.yml
- type: DataModel
  url: data-model/simplybook-me-data-model.yml
- type: Conformance
  url: conformance/simplybook-me-conformance.yml
- type: LLMsTxt
  url: llms/simplybook-me-llms.txt
- type: WellKnown
  url: well-known/simplybook-me-well-known.yml
- type: Hosts
  url: hosts/simplybook-me-hosts.yml
- type: Vendors
  url: vendors/simplybook-me-vendors.yml
- type: TermsOfService
  url: https://simplybook.me/en/terms-and-conditions
- type: Security
  url: https://simplybook.me/en/legal/security
- type: Postman
  url: https://www.postman.com/
- type: Blog
  url: https://simplybook.me/en/blog
- type: GettingStarted
  url: https://help.simplybook.me/wiki/Getting_started
- type: Documentation
  url: https://help.simplybook.me/
- type: DomainSecurity
  url: security/simplybook-me-domain-security.yml
- type: Website
  url: https://simplybook.me
- type: DeveloperPortal
  url: https://simplybook.me/en/developers
- type: APIReference
  url: https://simplybook.me/en/api/developer-api/tab/guide_api
- type: Pricing
  url: https://simplybook.me/en/pricing
- type: SignUp
  url: https://simplybook.me/en/default/registration
apis:
- name: SimplyBook.me API
  description: API documentation for SimplyBook.me
  humanURL: https://help.simplybook.me/wiki/API
  baseURL: null
  aid: simplybook-me:simplybook-me-api
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/simplybook-me-openapi-generated.yml
    x-provenance: generated
- aid: simplybook-me:simplybook-me-admin-api
  name: SimplyBook.me Admin API
  description: The Admin API from SimplyBook.me — 2 operation(s) for admin.
  humanURL: https://help.simplybook.me/wiki/API
  tags:
  - Admin
  properties:
  - type: OpenAPI
    url: openapi/simplybook-me-admin-api-openapi.yml
  - type: JSONSchema
    url: json-schema/simplybook-me-post-admin-webhooks-response-schema.json
  - type: JSONSchema
    url: json-schema/simplybook-me-post-admin-webhooks-request-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Help center API page provides HTML documentation but no machine‑readable OpenAPI/GraphQL/AsyncAPI spec.
  evidence:
  - url: https://help.simplybook.me/wiki/API
    status: 200
  checked: '2026-10-13'
x-enrichment:
  date: '2026-10-13'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

SimplyBook.me API — frequently asked questions

Does SimplyBook.me have an API?

Yes. APIs.io lists 2 APIs from SimplyBook.me, including SimplyBook.me API and SimplyBook.me Admin API.

Is there an OpenAPI specification for the SimplyBook.me API?

Yes. APIs.io indexes 2 OpenAPI specifications for SimplyBook.me, each linked for download from this page.

How much does the SimplyBook.me API cost?

SimplyBook.me publishes its prices; its Free plan is $0 per month, billed annually as of 2026-10-13. APIs.io lists 5 pricing plans for SimplyBook.me, with each plan's price, limits and inclusions under Pricing on this page.

Is the SimplyBook.me API ready for AI agents?

SimplyBook.me has a Kin Score of 28.5 out of 100 (thin) and an Agent Readiness score of 29.6 (agent-ready), scored by API Evangelist on 2026-11-06.

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