PlusThis

PlusThis is an Arizona-based marketing automation add-on company, founded in 2011, that sells a toolkit of roughly seventy no-code "tools" which bolt extra behaviour onto a CRM a business already runs — Keap (Infusionsoft), ActiveCampaign, Ontraport, HubSpot, Drip and HighLevel (GHL). The tools cover action links and smart links, countdown and evergreen-date scarcity, webinar and meeting connections (Zoom, GoToWebinar, WebinarJam, EverWebinar), scheduling connections (Calendly, Acuity), SMS sequences, field math and text formatting, contact validation and deduplication, Google Sheets and Drive export, Slack and DocuSign connections, and a Webhook Catcher that writes inbound third-party webhook payloads onto a CRM contact record. PlusThis is metered commercially on Active Tools and monthly Tool Runs rather than API calls, and it publishes no public developer API, no OpenAPI or other machine-readable contract, and no client SDKs — it is a consumer of other vendors' APIs rather than a producer of one.

PlusThis is profiled on the APIs.io network. Tagged areas include Company, Marketing Automation, Marketing, CRM, and Sales.

The PlusThis catalog on APIs.io includes 1 event-driven AsyncAPI specification.

PlusThis’ developer surface includes documentation, support, engineering blog, pricing, signup flow, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.2/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

0 APIs

Company Marketing Automation Marketing CRM Sales No-Code Automation Integration Webhook Email Marketing SMS Small Business

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 33.2/100 · thin

Contract Quality 8.8 / 21

Developer Ergonomics 2.8 / 17

Access Clarity 13.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Telecommunications 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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 github.com/api-evangelist/plusthis: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Pricing Plans 1

Published pricing tiers and plan structures.

Plusthis Plans Pricing

7 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Plusthis Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Plusthis Webhooks

ASYNCAPI

Security Posture 1

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

Plusthis Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: plusthis
name: PlusThis
description: PlusThis is an Arizona-based marketing automation add-on company, founded in 2011, that sells a toolkit of roughly
  seventy no-code "tools" which bolt extra behaviour onto a CRM a business already runs — Keap (Infusionsoft), ActiveCampaign,
  Ontraport, HubSpot, Drip and HighLevel (GHL). The tools cover action links and smart links, countdown and evergreen-date
  scarcity, webinar and meeting connections (Zoom, GoToWebinar, WebinarJam, EverWebinar), scheduling connections (Calendly,
  Acuity), SMS sequences, field math and text formatting, contact validation and deduplication, Google Sheets and Drive export,
  Slack and DocuSign connections, and a Webhook Catcher that writes inbound third-party webhook payloads onto a CRM contact
  record. PlusThis is metered commercially on Active Tools and monthly Tool Runs rather than API calls, and it publishes no
  public developer API, no OpenAPI or other machine-readable contract, and no client SDKs — it is a consumer of other vendors'
  APIs rather than a producer of one.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://d60ayi9p2ljnr.cloudfront.net/cms/assets/plusthis-icon-lg.png
url: https://raw.githubusercontent.com/api-evangelist/plusthis/refs/heads/main/apis.yml
x-type: company
x-source: harvest:marketing-integration-graph
x-tier: profile
x-tier-reason: enriched
specificationVersion: '0.23'
created: '2026-08-12'
modified: '2026-08-12'
tags:
- Company
- Marketing Automation
- Marketing
- CRM
- Sales
- No-Code
- Automation
- Integration
- Webhook
- Email Marketing
- SMS
- Small Business
tags_raw:
- Company
- Marketing Automation
- Marketing
- CRM
- Sales
- No Code
- Automation
- Integration
- Webhooks
- Email Marketing
- SMS
- Small Business
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://plusthis.com/
- type: Documentation
  url: https://kb.plusthis.com/
- type: HelpCenter
  url: https://help.plusthis.com/en/
- type: Support
  url: https://help.plusthis.com/en/
- type: Blog
  url: https://blog.plusthis.com/
- type: Pricing
  url: https://www.plusthis.com/pricing
- type: SignUp
  url: https://www.plusthis.com/register
- type: Login
  url: https://www.plusthis.com/app-login
- type: TermsOfService
  url: https://www.plusthis.com/eula
- type: PrivacyPolicy
  url: https://www.plusthis.com/privacy
- type: Plans
  url: plans/plusthis-plans-pricing.yml
- type: LLMsTxt
  url: llms/plusthis-llms.txt
- type: Lifecycle
  url: lifecycle/plusthis-lifecycle.yml
- type: Packages
  url: packages/plusthis-packages.yml
- type: DomainSecurity
  url: security/plusthis-domain-security.yml
x-vouched-by:
- Drip
- Ontraport
x-vouch-count: 2
x-enrichment:
  date: '2026-08-12'
  status: minimal
  artifacts_added: 8
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: PlusThis is a no-code CRM add-on sold entirely through its own web app — there is no developer portal, no API reference
    and no signup for API credentials anywhere on plusthis.com, kb.plusthis.com or help.plusthis.com, and the host named api.plusthis.com
    is the application login rather than an API (it 404s every spec path and answers /v1 with a bare "OK").
  evidence:
  - url: https://api.plusthis.com/openapi.json
    status: 404
  - url: https://api.plusthis.com/v1
    status: 200
  - url: https://developer.plusthis.com/
    status: 0
  - url: https://docs.plusthis.com/
    status: 0
  - url: https://www.plusthis.com/.well-known/api-catalog
    status: 404
  - url: https://help.plusthis.com/llms.txt
    status: 200
  checked: '2026-08-12'

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